TY  - JOUR
AU  - Obradović-Đuričić, Kosovka
AU  - Đuričić, Tijana
AU  - Medić, Vesna
AU  - Stamenković, Dejan
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2459
AB  - This paper shall discuss the importance of protocol application in modern dentistry. Literature data that include recommendations and consensuses in dental practice point out to their presence in available literature, printed papers, reviewed journals and supplements in the form of expert group conclusions. It should be noted that the protocols most commonly rely on valid postulates of different branches of medicine, supported by specific conditions of the environment in which they are implemented. Additionally, in our settings, applicable dentistry protocols are the result of requirements that institutions and practices should fulfill according to renewable accreditation, as well as following recommendations given in the good clinical practice guidelines with different binding obligations levels. Certain protocols offer therapeutic modalities categorized into classes intended to help users to select appropriate treatments. The second part of this paper shall address one such protocol which classifies partially edentulous patients. The emphasis is on the partial edentulism classification recommended by The American College of Prosthodontists (ACP), which relies on four diagnostic criteria essential for therapeutic decision. Edentulous areas location and extent, abutment teeth health, occlusion model, and residual ridge characteristics represent the parameters which have defined the four classes of partial edentulism of different complexity. In this way, comprehensive approach to the clinical status of the patients has, for the first time been offered to the dental practitioners assuring, among others, higher uniformity of professional attitudes in selection of therapeutic modalities.
AB  - U radu se diskutuje o značaju primene protokola u savremenoj stomatologiji. Literaturni podaci koji obuhvataju preporuke i konsenzuse u stomatološkoj praksi govore o njihovoj prisutnosti u dostupnim knjigama, štampanim radovima u recenziranim časopisima, i dodacima časopisa kao zaključci ekspertskih grupa. Treba primetiti da su protokoli najčešće oslonjeni na validne postulate različitih medicinskih grana, pomognuti specifičnim uslovima sredine u koju se implementiraju. Dodatno, u našim uslovima, protokoli u stomatologiji su rezultat zahteva koje institucije i prakse moraju da ispunjavaju shodno obnovljivoj akreditaciji, kao i poštovanja preporuka koje su date u vodičima dobre kliničke prakse različitog nivoa obaveznosti. Pojedini protokoli nude terapijske modalitete koji se kategorizuju u klase, pomažući korisnicima u izboru pravog tretmana. O jednom od takvih protokola koji klasifikuje krezube pacijente govori drugi deo rada. Akcenat je na primeni klasifikacije krezubosti koju je preporučio Američki koledž protetičara, a koja se oslanja na četiri dijagnostička kriterijuma, bitna za terapijsku odluku. Lokalizacija i veličina bezubih polja, stanje zdravlja zuba nosača, model okluzije i karakteristike rezidualnog grebena su parametri koji su definisali četiri klase krezubosti različite složenosti. Tako je, prvi put, stomatološkoj praksi ponuđen ozbiljan, sveobuhvatni pristup kliničkom statusu bolesnika, koji obezbeđuje, između ostalog, i uniformnije stručne stavove u izboru terapijskih modaliteta.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Protocols in classification of partially edentulous patients
T1  - Protokoli u klasifikaciji krezubosti
VL  - 147
IS  - 1-2
SP  - 112
EP  - 118
DO  - 10.2298/SARH180403048O
ER  - 

@article{
author = "Obradović-Đuričić, Kosovka and Đuričić, Tijana and Medić, Vesna and Stamenković, Dejan",
year = "2019",
abstract = "This paper shall discuss the importance of protocol application in modern dentistry. Literature data that include recommendations and consensuses in dental practice point out to their presence in available literature, printed papers, reviewed journals and supplements in the form of expert group conclusions. It should be noted that the protocols most commonly rely on valid postulates of different branches of medicine, supported by specific conditions of the environment in which they are implemented. Additionally, in our settings, applicable dentistry protocols are the result of requirements that institutions and practices should fulfill according to renewable accreditation, as well as following recommendations given in the good clinical practice guidelines with different binding obligations levels. Certain protocols offer therapeutic modalities categorized into classes intended to help users to select appropriate treatments. The second part of this paper shall address one such protocol which classifies partially edentulous patients. The emphasis is on the partial edentulism classification recommended by The American College of Prosthodontists (ACP), which relies on four diagnostic criteria essential for therapeutic decision. Edentulous areas location and extent, abutment teeth health, occlusion model, and residual ridge characteristics represent the parameters which have defined the four classes of partial edentulism of different complexity. In this way, comprehensive approach to the clinical status of the patients has, for the first time been offered to the dental practitioners assuring, among others, higher uniformity of professional attitudes in selection of therapeutic modalities., U radu se diskutuje o značaju primene protokola u savremenoj stomatologiji. Literaturni podaci koji obuhvataju preporuke i konsenzuse u stomatološkoj praksi govore o njihovoj prisutnosti u dostupnim knjigama, štampanim radovima u recenziranim časopisima, i dodacima časopisa kao zaključci ekspertskih grupa. Treba primetiti da su protokoli najčešće oslonjeni na validne postulate različitih medicinskih grana, pomognuti specifičnim uslovima sredine u koju se implementiraju. Dodatno, u našim uslovima, protokoli u stomatologiji su rezultat zahteva koje institucije i prakse moraju da ispunjavaju shodno obnovljivoj akreditaciji, kao i poštovanja preporuka koje su date u vodičima dobre kliničke prakse različitog nivoa obaveznosti. Pojedini protokoli nude terapijske modalitete koji se kategorizuju u klase, pomažući korisnicima u izboru pravog tretmana. O jednom od takvih protokola koji klasifikuje krezube pacijente govori drugi deo rada. Akcenat je na primeni klasifikacije krezubosti koju je preporučio Američki koledž protetičara, a koja se oslanja na četiri dijagnostička kriterijuma, bitna za terapijsku odluku. Lokalizacija i veličina bezubih polja, stanje zdravlja zuba nosača, model okluzije i karakteristike rezidualnog grebena su parametri koji su definisali četiri klase krezubosti različite složenosti. Tako je, prvi put, stomatološkoj praksi ponuđen ozbiljan, sveobuhvatni pristup kliničkom statusu bolesnika, koji obezbeđuje, između ostalog, i uniformnije stručne stavove u izboru terapijskih modaliteta.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Protocols in classification of partially edentulous patients, Protokoli u klasifikaciji krezubosti",
volume = "147",
number = "1-2",
pages = "112-118",
doi = "10.2298/SARH180403048O"
}

Obradović-Đuričić, K., Đuričić, T., Medić, V.,& Stamenković, D.. (2019). Protocols in classification of partially edentulous patients. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 147(1-2), 112-118.
https://doi.org/10.2298/SARH180403048O

Obradović-Đuričić K, Đuričić T, Medić V, Stamenković D. Protocols in classification of partially edentulous patients. in Srpski arhiv za celokupno lekarstvo. 2019;147(1-2):112-118.
doi:10.2298/SARH180403048O .

Obradović-Đuričić, Kosovka, Đuričić, Tijana, Medić, Vesna, Stamenković, Dejan, "Protocols in classification of partially edentulous patients" in Srpski arhiv za celokupno lekarstvo, 147, no. 1-2 (2019):112-118,
https://doi.org/10.2298/SARH180403048O . .

TY  - JOUR
AU  - Obradović-Đuričić, Kosovka
AU  - Đuričić, Tijana
AU  - Medić, Vesna
AU  - Radović, Katarina
PY  - 2017
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2259
AB  - Contemporary dentistry is, first of all, characterized by diverse accelerated development, owing to improvements of information and other technologies, as well as the development of dental materials (shape-memory biomaterials, nanomaterials, biomaterials for application in tissue engineering, etc.). Expert doctrinaire attitudes move from the direction of operative interventions, whereby disease and acute symptoms are primarily treated, towards the strengthening of oral health by minimally invasive procedures. A particular place in patients’ total rehabilitation belongs to numerous esthetic procedures which, to a large extent, make up a wants-based service, led by the patients’ needs and affinities. This paper deals with differences between cosmetic and esthetic dentistry. The complexity of esthetic dentistry, which favors therapy with the change of function parameters in care for the patient, is emphasized. On the other hand, more attention is paid to the need to know and respect ethical and marketing principles that follow any activity of dentists, starting from the first contact with the patient, the selection of certified materials, to the implementation of the appropriate treatment plan. Well-directed communication and comprehensive awareness of the patient, the use of the visual analog scale, consideration of realistic resources in therapy, and the acceptance of de Bono model of adopted parallel thinking are determinants which help dentists define a problem adequately, find quality solutions, open alternative solutions, and reduce the potential risks in patients’ therapy.
AB  - Današnju stomatologiju karakteriše ubrzani razvoj zahvaljujući unapređenju informacionih i drugih tehnologija, kao i razvoju dentalnih materijala (biomaterijali sa memorisanim oblikom, nanomaterijali, biomaterijali za primenu u tkivnom inženjeringu i dr.). Stručni doktrinarni stavovi kreću se iz pravca operativnih intervencija, kojima se primarno saniraju bolest i akutni simptomi, ka jačanju oralnog zdravlja malo invazivnim postupcima. Posebno mesto u sveukupnoj rehabilitaciji bolesnika pripada brojnim estetskim procedurama, koje u velikoj meri čine praksu vođenu potrebama i afi- nitetima bolesnika. U radu se diskutuje o razlikama u poimanju kozmetske i estetske stomatologije. Naglašena je složenost estetske stomatologije, koja daje prednost terapiji sa promenom funkcijskih parametara u zbrinjavanju bolesnika. S druge strane, akcenat se stavlja na potrebu poznavanja i poštovanja etičkih i marketinških načela koja prate svaku aktivnost lekara, počev od prvog kontakta sa bolesnikom, odabira sertifikovanog materijala do realizacije odgovarajućeg terapijskog plana. Dobro usmerena komunikacija i sveobuhvatna informisanost bolesnika, upotreba VAS skale, kao i sagledavanje realnih resursa u terapiji odrednice su koje pomažu stomatologu da definiše problem na pravi način, iznađe kvalitetna rešenja, otvori alternativne solucije i smanji moguće rizike u terapiji bolesnika.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Ethics and marketing in esthetic dentistry
T1  - Etika i marketing u estetskoj stomatologiji
VL  - 145
IS  - 9-10
SP  - 540
EP  - 545
DO  - 10.2298/SARH160923078O
ER  - 

@article{
author = "Obradović-Đuričić, Kosovka and Đuričić, Tijana and Medić, Vesna and Radović, Katarina",
year = "2017",
abstract = "Contemporary dentistry is, first of all, characterized by diverse accelerated development, owing to improvements of information and other technologies, as well as the development of dental materials (shape-memory biomaterials, nanomaterials, biomaterials for application in tissue engineering, etc.). Expert doctrinaire attitudes move from the direction of operative interventions, whereby disease and acute symptoms are primarily treated, towards the strengthening of oral health by minimally invasive procedures. A particular place in patients’ total rehabilitation belongs to numerous esthetic procedures which, to a large extent, make up a wants-based service, led by the patients’ needs and affinities. This paper deals with differences between cosmetic and esthetic dentistry. The complexity of esthetic dentistry, which favors therapy with the change of function parameters in care for the patient, is emphasized. On the other hand, more attention is paid to the need to know and respect ethical and marketing principles that follow any activity of dentists, starting from the first contact with the patient, the selection of certified materials, to the implementation of the appropriate treatment plan. Well-directed communication and comprehensive awareness of the patient, the use of the visual analog scale, consideration of realistic resources in therapy, and the acceptance of de Bono model of adopted parallel thinking are determinants which help dentists define a problem adequately, find quality solutions, open alternative solutions, and reduce the potential risks in patients’ therapy., Današnju stomatologiju karakteriše ubrzani razvoj zahvaljujući unapređenju informacionih i drugih tehnologija, kao i razvoju dentalnih materijala (biomaterijali sa memorisanim oblikom, nanomaterijali, biomaterijali za primenu u tkivnom inženjeringu i dr.). Stručni doktrinarni stavovi kreću se iz pravca operativnih intervencija, kojima se primarno saniraju bolest i akutni simptomi, ka jačanju oralnog zdravlja malo invazivnim postupcima. Posebno mesto u sveukupnoj rehabilitaciji bolesnika pripada brojnim estetskim procedurama, koje u velikoj meri čine praksu vođenu potrebama i afi- nitetima bolesnika. U radu se diskutuje o razlikama u poimanju kozmetske i estetske stomatologije. Naglašena je složenost estetske stomatologije, koja daje prednost terapiji sa promenom funkcijskih parametara u zbrinjavanju bolesnika. S druge strane, akcenat se stavlja na potrebu poznavanja i poštovanja etičkih i marketinških načela koja prate svaku aktivnost lekara, počev od prvog kontakta sa bolesnikom, odabira sertifikovanog materijala do realizacije odgovarajućeg terapijskog plana. Dobro usmerena komunikacija i sveobuhvatna informisanost bolesnika, upotreba VAS skale, kao i sagledavanje realnih resursa u terapiji odrednice su koje pomažu stomatologu da definiše problem na pravi način, iznađe kvalitetna rešenja, otvori alternativne solucije i smanji moguće rizike u terapiji bolesnika.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Ethics and marketing in esthetic dentistry, Etika i marketing u estetskoj stomatologiji",
volume = "145",
number = "9-10",
pages = "540-545",
doi = "10.2298/SARH160923078O"
}

Obradović-Đuričić, K., Đuričić, T., Medić, V.,& Radović, K.. (2017). Ethics and marketing in esthetic dentistry. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 145(9-10), 540-545.
https://doi.org/10.2298/SARH160923078O

Obradović-Đuričić K, Đuričić T, Medić V, Radović K. Ethics and marketing in esthetic dentistry. in Srpski arhiv za celokupno lekarstvo. 2017;145(9-10):540-545.
doi:10.2298/SARH160923078O .

Obradović-Đuričić, Kosovka, Đuričić, Tijana, Medić, Vesna, Radović, Katarina, "Ethics and marketing in esthetic dentistry" in Srpski arhiv za celokupno lekarstvo, 145, no. 9-10 (2017):540-545,
https://doi.org/10.2298/SARH160923078O . .

TY  - JOUR
AU  - Ilić, Dragan
AU  - Obradović-Đuričić, Kosovka
AU  - Medić, Vesna
AU  - Poštić, Srđan
AU  - Gorjanović, Stanislava Z.
AU  - Pastor, Ferenc
AU  - Radović, Katarina
PY  - 2016
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2169
AB  - Background: Free radicals (FR) occur in oral cavity where lot of food was transferred to through entire life under specific saliva conditions. Many enzymes, microorganism, alcohol beverages, nicotine and other harmful or indifferent substances when in contact to oral tissues might provoke oxidation process under specific condition creating FR's. The similar role might have various dental materials. Aim of the study was to record the level of antioxidant (AO) activity of several permanent (P) luting cements alone or combined with quercetin AO substance. Materials/Methods: P cements were Zn-phosphate, Zn-polycarboxilate, GIC and composite resin cement. They were prepared as original prescription and their variant by 1% weight addition of quercetin. AO activity of cements was measured by HPMC test evaluated by Student t test. Results: There were statistically significant differences among Zn-phosphate, Zn-polycarboxilate and resin dental cements (p > 0,05). GIC displayed significantly higher AO values (p  lt  0,01) versus other three cements. There were no difference in AO capacity between sample of original P cements and their corresponding quercetin variants (p > 0,05). Conclusions: Conventional GIC displayed the most powerful AO activity among P luting cements. Addition of 1% antioxidant quercetin did not improve AO capacity of investigated cements.
PB  - Udruženje stomatologa Balkana
T2  - Balkan Journal of Dental Medicine
T1  - Investigation of antioxidant capacity of several luting cements processes by HPMC method
VL  - 20
IS  - 3
SP  - 155
EP  - 159
DO  - 10.1515/bjdm-2016-0025
ER  - 

@article{
author = "Ilić, Dragan and Obradović-Đuričić, Kosovka and Medić, Vesna and Poštić, Srđan and Gorjanović, Stanislava Z. and Pastor, Ferenc and Radović, Katarina",
year = "2016",
abstract = "Background: Free radicals (FR) occur in oral cavity where lot of food was transferred to through entire life under specific saliva conditions. Many enzymes, microorganism, alcohol beverages, nicotine and other harmful or indifferent substances when in contact to oral tissues might provoke oxidation process under specific condition creating FR's. The similar role might have various dental materials. Aim of the study was to record the level of antioxidant (AO) activity of several permanent (P) luting cements alone or combined with quercetin AO substance. Materials/Methods: P cements were Zn-phosphate, Zn-polycarboxilate, GIC and composite resin cement. They were prepared as original prescription and their variant by 1% weight addition of quercetin. AO activity of cements was measured by HPMC test evaluated by Student t test. Results: There were statistically significant differences among Zn-phosphate, Zn-polycarboxilate and resin dental cements (p > 0,05). GIC displayed significantly higher AO values (p  lt  0,01) versus other three cements. There were no difference in AO capacity between sample of original P cements and their corresponding quercetin variants (p > 0,05). Conclusions: Conventional GIC displayed the most powerful AO activity among P luting cements. Addition of 1% antioxidant quercetin did not improve AO capacity of investigated cements.",
publisher = "Udruženje stomatologa Balkana",
journal = "Balkan Journal of Dental Medicine",
title = "Investigation of antioxidant capacity of several luting cements processes by HPMC method",
volume = "20",
number = "3",
pages = "155-159",
doi = "10.1515/bjdm-2016-0025"
}

Ilić, D., Obradović-Đuričić, K., Medić, V., Poštić, S., Gorjanović, S. Z., Pastor, F.,& Radović, K.. (2016). Investigation of antioxidant capacity of several luting cements processes by HPMC method. in Balkan Journal of Dental Medicine
Udruženje stomatologa Balkana., 20(3), 155-159.
https://doi.org/10.1515/bjdm-2016-0025

Ilić D, Obradović-Đuričić K, Medić V, Poštić S, Gorjanović SZ, Pastor F, Radović K. Investigation of antioxidant capacity of several luting cements processes by HPMC method. in Balkan Journal of Dental Medicine. 2016;20(3):155-159.
doi:10.1515/bjdm-2016-0025 .

Ilić, Dragan, Obradović-Đuričić, Kosovka, Medić, Vesna, Poštić, Srđan, Gorjanović, Stanislava Z., Pastor, Ferenc, Radović, Katarina, "Investigation of antioxidant capacity of several luting cements processes by HPMC method" in Balkan Journal of Dental Medicine, 20, no. 3 (2016):155-159,
https://doi.org/10.1515/bjdm-2016-0025 . .

TY  - JOUR
AU  - Antonijević, Đorđe
AU  - Ilić, Dragan
AU  - Medić, Vesna
AU  - Dodić, Slobodan
AU  - Obradović-Đuričić, Kosovka
AU  - Rakočević, Zoran
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1909
AB  - Bacground/Aim. The radiopacity of an endodontic material can considerably vary as measured on film and a digital sensor. Digital radiography offers numerous advantages over convential film-based radiography in dental clinical practice regarding both diagnostic capabilities and postintervention procedures. The aim of this study was to investigate the capacity of conventional and charge-conpled device (CCD) based digital radiography to detect material on radiograph depending on the radio-pacifying agent present in the material. Methods. Experimental cements were formulated by mixing Portland cement with the following radiopacifying agents: zinc oxide (ZnO), zirconium oxide (ZrO2), titanium dioxide (TiO2), barium sulphate (BaSO4), iodoform (CHI3), bismuth oxide (Bi2O3) and ytterbium trifluoride (YbF3). In addition, 5 endodontic materials comprising Endomethasone®, Diaket®, N2®, Roth 801® and Acroseal® were investigated to serve as control. Per three specimens of each material were radiographed alongside an aluminum step wedge on film (Eastman Kodak Company®, Rochester, NY) and a CCD-based digital sensor (Trophy Radiologie®, Cedex, France). Radiopacity values were calculated by converting the radiographic densities of the specimens expressed as a mean optical densities or mean grey scale values into equivalent thickness of aluminum. Results. Twoway ANOVA detected no significant differences with respect to the imaging system (p > 0.05), but the differences were significant with respect to radiopacifier (p  lt  0.001) and the interaction of the two factors (p  lt  0.05). Paired ttest revealed significant differences between the methods used for pure Portland cement, all concentrations of BaSO4 and CHI3, 10% and 20% additions of ZrO2 and Bi2O3 and 10% and 30% addition of YbF3 (p  lt  0.05). Conclusion. The materials which incorporate CHI3 or BaSO4 as radiopacifying agents are expected to be significantly more radiopaque on a digital sensor than on film. During clinical practice one should concern to the quality of contrast assessement obtained by digital according to conventional radiography.
AB  - Uvod/Cilj. Radiokontrastnost jednog endodontskog materijala može znatno varirati u zavisnosti od toga da li je određivano na filmu ili digitalnim senzorom. Digitalna radiografija pruža mnogobrojne prednosti u odnosu na konvencionalnu radiografiju u svakodnevnoj stomatološkoj kliničkoj praksi, kako u pogledu dijagnostičkih mogućnosti, tako i u praćenju rezultata lečenja. Cilj ove studije bio je da se ispitaju mogućnost i konvencionalne i charge-conpled device (CCD) digitalne radiografije za vizualizaciju materijala na radiogramu u zavisnosti od kontrastnog sredstva prisutnog u materijalu. Metode. Eksperimentalni cementi su pripremljeni dodavanjem sledećih kontrastnih sredstava u Portland cement: cink-oksid (ZnO), cirkonijum-oksid (ZrO2), titanijum-dioksid (TiO2), barijum-sulfat (BaSO4), jodoform (CHI3), bizmut-oksid (Bi2O3) i iterbijum-trifluorid (YbF3). Takođe, ispitivano je pet kontrolnih endodontskih cementa: Endomethasone®, Diaket®, N2®, Roth 801® i Acroseal®. Po tri uzorka svakog materijala su radiografisana pored aluminijumskog stepeničastog etalona na filmu (Eastman Kodak Company, Rochester, NY) i CCD digitalnom senzoru (Trophy Radiologie, Cedex, France). Vrednosti rendgenkontrastnosti izračunavane su konverzijom radiografskih gustina uzoraka izraženih optičkim gustinama ili stepenom tona sivo-bele skale u odgovarajuću debljinu aluminijuma. Rezultati. Dvostrukom analizom varijanse nije ustanovljena statistički značajna razlika između primenjenih metoda radiografisanja (p > 0.05), ali su vrsta kontrastnog sredstva (p  lt  0.001) i interakcija ova dva faktora (p  lt  0.05) bili značajno različiti. Upareni t-test pokazao je statistički značajnu razliku između korišćenih metoda za čisti Portland cement, sve koncentracije BaSO4 i CHI3, 10% i 20% dodatka ZrO2 i Bi2O3 i 10% i 30% dodatka YbF3 (p  lt  0.05). Zaključak. Očekuje se da materijali koji sadrže CHI3 ili BaSO4 kao kontrastna sredstva budu lakše uočljivi na digitalnom senzoru nego na konvencionalnom dentalnom filmu. U kliničkom radu mora se imati u vidu kvalitet procene kontrasta koju pokazuje digitalna slika u odnosu na sliku dobijenu konvencionalnom radiografijom.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent
T1  - Ispitivanje kapaciteta konvencionalne i digitalne radiografije za utvrđivanje razlika kod materijala na radiogramu zavisno od prisutnog kontrastnog sredstva
VL  - 71
IS  - 11
SP  - 1006
EP  - 1012
DO  - 10.2298/VSP1411006A
ER  - 

@article{
author = "Antonijević, Đorđe and Ilić, Dragan and Medić, Vesna and Dodić, Slobodan and Obradović-Đuričić, Kosovka and Rakočević, Zoran",
year = "2014",
abstract = "Bacground/Aim. The radiopacity of an endodontic material can considerably vary as measured on film and a digital sensor. Digital radiography offers numerous advantages over convential film-based radiography in dental clinical practice regarding both diagnostic capabilities and postintervention procedures. The aim of this study was to investigate the capacity of conventional and charge-conpled device (CCD) based digital radiography to detect material on radiograph depending on the radio-pacifying agent present in the material. Methods. Experimental cements were formulated by mixing Portland cement with the following radiopacifying agents: zinc oxide (ZnO), zirconium oxide (ZrO2), titanium dioxide (TiO2), barium sulphate (BaSO4), iodoform (CHI3), bismuth oxide (Bi2O3) and ytterbium trifluoride (YbF3). In addition, 5 endodontic materials comprising Endomethasone®, Diaket®, N2®, Roth 801® and Acroseal® were investigated to serve as control. Per three specimens of each material were radiographed alongside an aluminum step wedge on film (Eastman Kodak Company®, Rochester, NY) and a CCD-based digital sensor (Trophy Radiologie®, Cedex, France). Radiopacity values were calculated by converting the radiographic densities of the specimens expressed as a mean optical densities or mean grey scale values into equivalent thickness of aluminum. Results. Twoway ANOVA detected no significant differences with respect to the imaging system (p > 0.05), but the differences were significant with respect to radiopacifier (p  lt  0.001) and the interaction of the two factors (p  lt  0.05). Paired ttest revealed significant differences between the methods used for pure Portland cement, all concentrations of BaSO4 and CHI3, 10% and 20% additions of ZrO2 and Bi2O3 and 10% and 30% addition of YbF3 (p  lt  0.05). Conclusion. The materials which incorporate CHI3 or BaSO4 as radiopacifying agents are expected to be significantly more radiopaque on a digital sensor than on film. During clinical practice one should concern to the quality of contrast assessement obtained by digital according to conventional radiography., Uvod/Cilj. Radiokontrastnost jednog endodontskog materijala može znatno varirati u zavisnosti od toga da li je određivano na filmu ili digitalnim senzorom. Digitalna radiografija pruža mnogobrojne prednosti u odnosu na konvencionalnu radiografiju u svakodnevnoj stomatološkoj kliničkoj praksi, kako u pogledu dijagnostičkih mogućnosti, tako i u praćenju rezultata lečenja. Cilj ove studije bio je da se ispitaju mogućnost i konvencionalne i charge-conpled device (CCD) digitalne radiografije za vizualizaciju materijala na radiogramu u zavisnosti od kontrastnog sredstva prisutnog u materijalu. Metode. Eksperimentalni cementi su pripremljeni dodavanjem sledećih kontrastnih sredstava u Portland cement: cink-oksid (ZnO), cirkonijum-oksid (ZrO2), titanijum-dioksid (TiO2), barijum-sulfat (BaSO4), jodoform (CHI3), bizmut-oksid (Bi2O3) i iterbijum-trifluorid (YbF3). Takođe, ispitivano je pet kontrolnih endodontskih cementa: Endomethasone®, Diaket®, N2®, Roth 801® i Acroseal®. Po tri uzorka svakog materijala su radiografisana pored aluminijumskog stepeničastog etalona na filmu (Eastman Kodak Company, Rochester, NY) i CCD digitalnom senzoru (Trophy Radiologie, Cedex, France). Vrednosti rendgenkontrastnosti izračunavane su konverzijom radiografskih gustina uzoraka izraženih optičkim gustinama ili stepenom tona sivo-bele skale u odgovarajuću debljinu aluminijuma. Rezultati. Dvostrukom analizom varijanse nije ustanovljena statistički značajna razlika između primenjenih metoda radiografisanja (p > 0.05), ali su vrsta kontrastnog sredstva (p  lt  0.001) i interakcija ova dva faktora (p  lt  0.05) bili značajno različiti. Upareni t-test pokazao je statistički značajnu razliku između korišćenih metoda za čisti Portland cement, sve koncentracije BaSO4 i CHI3, 10% i 20% dodatka ZrO2 i Bi2O3 i 10% i 30% dodatka YbF3 (p  lt  0.05). Zaključak. Očekuje se da materijali koji sadrže CHI3 ili BaSO4 kao kontrastna sredstva budu lakše uočljivi na digitalnom senzoru nego na konvencionalnom dentalnom filmu. U kliničkom radu mora se imati u vidu kvalitet procene kontrasta koju pokazuje digitalna slika u odnosu na sliku dobijenu konvencionalnom radiografijom.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent, Ispitivanje kapaciteta konvencionalne i digitalne radiografije za utvrđivanje razlika kod materijala na radiogramu zavisno od prisutnog kontrastnog sredstva",
volume = "71",
number = "11",
pages = "1006-1012",
doi = "10.2298/VSP1411006A"
}

Antonijević, Đ., Ilić, D., Medić, V., Dodić, S., Obradović-Đuričić, K.,& Rakočević, Z.. (2014). Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 71(11), 1006-1012.
https://doi.org/10.2298/VSP1411006A

Antonijević Đ, Ilić D, Medić V, Dodić S, Obradović-Đuričić K, Rakočević Z. Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent. in Vojnosanitetski pregled. 2014;71(11):1006-1012.
doi:10.2298/VSP1411006A .

Antonijević, Đorđe, Ilić, Dragan, Medić, Vesna, Dodić, Slobodan, Obradović-Đuričić, Kosovka, Rakočević, Zoran, "Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent" in Vojnosanitetski pregled, 71, no. 11 (2014):1006-1012,
https://doi.org/10.2298/VSP1411006A . .

TY  - JOUR
AU  - Obradović-Đuričić, Kosovka
AU  - Medić, Vesna
AU  - Dodić, Slobodan
AU  - Đurišić, Slobodan
AU  - Jokić, Bojan
AU  - Kuzmanović, Jovana
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1894
AB  - This paper discusses the preparation of tooth design for porcelain veneers. It follows the literature more than three past decades. From the very beginning, the porcelain veneers were placed to no/minimally prepared tooth substance, showing different problems in clinical use. Later, the technique of etching the porcelain and controlling the reduction of tooth structure presented the great steps forward in porcelain veneers accepting. The special accent concerning the preparative design was placed on variations of incisal edge preparation - the problem, which is still present in current practice. Additionally, the paper emphasizes the extremely demanding protocols in making the porcelain veneers, as well as their expanded clinical indications.
AB  - Rad diskutuje preparativni dizajn zuba u izradi porcelanskih faseta kroz literaturni revijalni osvrt duži od tri decenije. Upoznajući se sa porcelanskim fasetama, dentalna profesija nije prepoznavala na pravi način značaj preparacije zuba koji će nositi fasete, pa su fasete aplikovane na nepreparine površine zuba. Veliki korak napred u kliničkoj prihvatljivosti porcelanskih faseta donela je tehnika nagrizanja površine gleđi i kontrolisana redukcija ovog tkiva. Poseban akcenat u uspešnoj ekspolataciji faseta predstavlja iznalaženje odgovarajućeg dizajna incizalne ivice, kao i rešavanje problema fraktura tankih porcelanskih faseta. U vezi sa tim, rad diskutuje jedan od modaliteta u preparaciji incizalne ivice koji uključuje samo njeno skraćivanje do 2mm, but joint dizajn. Istraživanja pokazuju niz prednosti ovog dizajna u odnosu na palatinalni žleb: optimalan odnos keramike i cementa na palatinalnoj strani, smanjen rizik od postcemetirajućeg loma nastalog polimerizacionom kontrakcijom i prirodnim temperaturnim varijacijama u ustima i dr. Uz to, ovaj dizajn omogućava prezervaciju perifernog sloja gleđi, koji je kritičan u eliminaciji mikropukotine na palatinalnom spoju fasete i zuba, jasno se suprostavljajući silama smicanja. Skraćivanje incizalne ivice je jednostavnije, brže, a laboratorijski model je jasniji. Ravna površina ostavlja bolji oslonac keramičkoj faseti, pa su i rizici loma tankih palatinalnih ivica keramike kontrolisani ovim dizajnom. U novije vreme, prošireno indikativno polje u izradi faseta, koje je donelo brojne specifičnosti u preparativnoj tehnici i dizajnu zuba, biva kritikovano od 'back to future' promotera u struci, koji se zalažu za upotrebu tankih non-prep porcelanskih faseta. Uz to, revijalni pregled apostrofira značaj poštovanja veoma zahtevnih, različitih kliničkih faza u preparaciji zuba za prihvatanje soficticiranog konzervativnog modaliteta u struci, kakve su porcelanske fasete.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Porcelain veneers: Preparation design: A retrospective review
T1  - Porcelanske fasete - preparativni dizajn - revijalni pregled
VL  - 68
IS  - 2
SP  - 179
EP  - 192
DO  - 10.2298/HEMIND130323042O
ER  - 

@article{
author = "Obradović-Đuričić, Kosovka and Medić, Vesna and Dodić, Slobodan and Đurišić, Slobodan and Jokić, Bojan and Kuzmanović, Jovana",
year = "2014",
abstract = "This paper discusses the preparation of tooth design for porcelain veneers. It follows the literature more than three past decades. From the very beginning, the porcelain veneers were placed to no/minimally prepared tooth substance, showing different problems in clinical use. Later, the technique of etching the porcelain and controlling the reduction of tooth structure presented the great steps forward in porcelain veneers accepting. The special accent concerning the preparative design was placed on variations of incisal edge preparation - the problem, which is still present in current practice. Additionally, the paper emphasizes the extremely demanding protocols in making the porcelain veneers, as well as their expanded clinical indications., Rad diskutuje preparativni dizajn zuba u izradi porcelanskih faseta kroz literaturni revijalni osvrt duži od tri decenije. Upoznajući se sa porcelanskim fasetama, dentalna profesija nije prepoznavala na pravi način značaj preparacije zuba koji će nositi fasete, pa su fasete aplikovane na nepreparine površine zuba. Veliki korak napred u kliničkoj prihvatljivosti porcelanskih faseta donela je tehnika nagrizanja površine gleđi i kontrolisana redukcija ovog tkiva. Poseban akcenat u uspešnoj ekspolataciji faseta predstavlja iznalaženje odgovarajućeg dizajna incizalne ivice, kao i rešavanje problema fraktura tankih porcelanskih faseta. U vezi sa tim, rad diskutuje jedan od modaliteta u preparaciji incizalne ivice koji uključuje samo njeno skraćivanje do 2mm, but joint dizajn. Istraživanja pokazuju niz prednosti ovog dizajna u odnosu na palatinalni žleb: optimalan odnos keramike i cementa na palatinalnoj strani, smanjen rizik od postcemetirajućeg loma nastalog polimerizacionom kontrakcijom i prirodnim temperaturnim varijacijama u ustima i dr. Uz to, ovaj dizajn omogućava prezervaciju perifernog sloja gleđi, koji je kritičan u eliminaciji mikropukotine na palatinalnom spoju fasete i zuba, jasno se suprostavljajući silama smicanja. Skraćivanje incizalne ivice je jednostavnije, brže, a laboratorijski model je jasniji. Ravna površina ostavlja bolji oslonac keramičkoj faseti, pa su i rizici loma tankih palatinalnih ivica keramike kontrolisani ovim dizajnom. U novije vreme, prošireno indikativno polje u izradi faseta, koje je donelo brojne specifičnosti u preparativnoj tehnici i dizajnu zuba, biva kritikovano od 'back to future' promotera u struci, koji se zalažu za upotrebu tankih non-prep porcelanskih faseta. Uz to, revijalni pregled apostrofira značaj poštovanja veoma zahtevnih, različitih kliničkih faza u preparaciji zuba za prihvatanje soficticiranog konzervativnog modaliteta u struci, kakve su porcelanske fasete.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Porcelain veneers: Preparation design: A retrospective review, Porcelanske fasete - preparativni dizajn - revijalni pregled",
volume = "68",
number = "2",
pages = "179-192",
doi = "10.2298/HEMIND130323042O"
}

Obradović-Đuričić, K., Medić, V., Dodić, S., Đurišić, S., Jokić, B.,& Kuzmanović, J.. (2014). Porcelain veneers: Preparation design: A retrospective review. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 68(2), 179-192.
https://doi.org/10.2298/HEMIND130323042O

Obradović-Đuričić K, Medić V, Dodić S, Đurišić S, Jokić B, Kuzmanović J. Porcelain veneers: Preparation design: A retrospective review. in Hemijska industrija. 2014;68(2):179-192.
doi:10.2298/HEMIND130323042O .

Obradović-Đuričić, Kosovka, Medić, Vesna, Dodić, Slobodan, Đurišić, Slobodan, Jokić, Bojan, Kuzmanović, Jovana, "Porcelain veneers: Preparation design: A retrospective review" in Hemijska industrija, 68, no. 2 (2014):179-192,
https://doi.org/10.2298/HEMIND130323042O . .

TY  - JOUR
AU  - Obradović-Đuričić, Kosovka
AU  - Medić, Vesna
AU  - Dodić, Slobodan
AU  - Gavrilov, Dragan
AU  - Antonijević, Đorđe
AU  - Zrilić, Milorad
PY  - 2013
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1798
AB  - This article presents a literature review on the resin bond to zirconia ceramic. Modern esthetic dentistry has highly recognized zirconia, among other ceramic materials. Biocompatibility of zirconia, chemical and dimensional stability, excellent mechanical properties, all together could guarantee optimal therapeutical results in complex prosthodontic reconstruction. On the other hand, low thermal degradation, aging of zirconia as well as problematic bonding of zirconia framework to dental luting cements and tooth structures, opened the room for discussion concerning their clinical durability. The well known methods of mechanical and chemical bonding used on glass-ceramics are not applicable for use with zirconia. Therefore, under critical clinical situations, selection of the bonding mechanism should be focused on two important points: high initial bond strength value and long term bond strength between zirconia-resin interface. Also, this paper emphases the use of phosphate monomer luting cements on freshly air-abraded zirconia as the simplest and most effective way for zirconia cementation procedure today.
AB  - Rad daje osvrt na problem vezivanja nadoknada od cirkonijum-dioksida za zubna tkiva. Cirkonijum-dioksid (cirkonija) je oksidni keramički materijal koji u stomatologiji - posebno u savremenoj estetskoj praksi-nalazi važno mesto. Dobrih mehaničkih karakteristika, visoke biokompatibilnosti i zadovoljavajućih optičkih osobina, on predstavlja materijal izbora u velikom broju protetičkih indikacija. Ono što može ugroziti krajnje terapijske rezultate kada je u pitanju klinička eksploatacija nadoknada od cirkonijum-dioksida jeste nemogućnost jednoobrazne pripreme njene površine za vezivanje s različitim cementima i zubnim strukturama. U radu se opisuju i diskutuju različiti načini pripreme povr- šine cirkonije. Naglašava se da u odabiru optimalne metode prednost treba dati jednostavnijim kliničkim opcijama, poput peskiranja površine cirkonije i upotrebe kompozitnog cementa sa specijalnim fosfatnim monomerima.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Dilemmas in zirconia bonding: A review
T1  - Problem vezivanja nadoknada od cirkonije - pregled literature
VL  - 141
IS  - 5-6
SP  - 395
EP  - 401
DO  - 10.2298/SARH1306395O
ER  - 

@article{
author = "Obradović-Đuričić, Kosovka and Medić, Vesna and Dodić, Slobodan and Gavrilov, Dragan and Antonijević, Đorđe and Zrilić, Milorad",
year = "2013",
abstract = "This article presents a literature review on the resin bond to zirconia ceramic. Modern esthetic dentistry has highly recognized zirconia, among other ceramic materials. Biocompatibility of zirconia, chemical and dimensional stability, excellent mechanical properties, all together could guarantee optimal therapeutical results in complex prosthodontic reconstruction. On the other hand, low thermal degradation, aging of zirconia as well as problematic bonding of zirconia framework to dental luting cements and tooth structures, opened the room for discussion concerning their clinical durability. The well known methods of mechanical and chemical bonding used on glass-ceramics are not applicable for use with zirconia. Therefore, under critical clinical situations, selection of the bonding mechanism should be focused on two important points: high initial bond strength value and long term bond strength between zirconia-resin interface. Also, this paper emphases the use of phosphate monomer luting cements on freshly air-abraded zirconia as the simplest and most effective way for zirconia cementation procedure today., Rad daje osvrt na problem vezivanja nadoknada od cirkonijum-dioksida za zubna tkiva. Cirkonijum-dioksid (cirkonija) je oksidni keramički materijal koji u stomatologiji - posebno u savremenoj estetskoj praksi-nalazi važno mesto. Dobrih mehaničkih karakteristika, visoke biokompatibilnosti i zadovoljavajućih optičkih osobina, on predstavlja materijal izbora u velikom broju protetičkih indikacija. Ono što može ugroziti krajnje terapijske rezultate kada je u pitanju klinička eksploatacija nadoknada od cirkonijum-dioksida jeste nemogućnost jednoobrazne pripreme njene površine za vezivanje s različitim cementima i zubnim strukturama. U radu se opisuju i diskutuju različiti načini pripreme povr- šine cirkonije. Naglašava se da u odabiru optimalne metode prednost treba dati jednostavnijim kliničkim opcijama, poput peskiranja površine cirkonije i upotrebe kompozitnog cementa sa specijalnim fosfatnim monomerima.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Dilemmas in zirconia bonding: A review, Problem vezivanja nadoknada od cirkonije - pregled literature",
volume = "141",
number = "5-6",
pages = "395-401",
doi = "10.2298/SARH1306395O"
}

Obradović-Đuričić, K., Medić, V., Dodić, S., Gavrilov, D., Antonijević, Đ.,& Zrilić, M.. (2013). Dilemmas in zirconia bonding: A review. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 141(5-6), 395-401.
https://doi.org/10.2298/SARH1306395O

Obradović-Đuričić K, Medić V, Dodić S, Gavrilov D, Antonijević Đ, Zrilić M. Dilemmas in zirconia bonding: A review. in Srpski arhiv za celokupno lekarstvo. 2013;141(5-6):395-401.
doi:10.2298/SARH1306395O .

Obradović-Đuričić, Kosovka, Medić, Vesna, Dodić, Slobodan, Gavrilov, Dragan, Antonijević, Đorđe, Zrilić, Milorad, "Dilemmas in zirconia bonding: A review" in Srpski arhiv za celokupno lekarstvo, 141, no. 5-6 (2013):395-401,
https://doi.org/10.2298/SARH1306395O . .

TY  - JOUR
AU  - Obradović-Đuričić, Kosovka
AU  - Medić, Vesna
AU  - Radišić, Marina
AU  - Laušević, Mila
PY  - 2011
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1639
AB  - This study examined the possible correlation between the degree of conversion (DC) and the amount of substances eluted from three commercial cured resin-based cements. The DC of the various resin-based cements was measured by Raman spectroscopy, while the quantity of unreacted monomers released from the cement matrix (triethylene glycol dimethacrylate, TEGDMA, urethane dimethacrylate, UDMA, 2-hydroxyethyl methacrylate, HEMA and bisphenol A) was determined by high pressure liquid chromatography (HPLC). The obtained results, after multiple statistical evaluation (one way ANOVA, LSD post hoc test), showed no significant differences in the DC values between the resin cements. On the contrary, the results of the HPLC analysis depicted statistically significant differences between the three materials with respect to the amount of leached monomers. In addition, no correlation between the DC and the amount of eluted substances from the tested cured composite cements was found.
AB  - Rad istražuje moguću korelaciju stepena konverzije (DC) i količine oslobođenih monomernih supstanci iz tri komercijalna preparata kompozitnih dentalnih cemenata. Stepen konverzije kompozitnih cemenata određen je metodom Raman spektroskopije, dok je količina neizreagovalih i oslobođenih monomera iz cementnog matriksa detektovana pomoću HPLC metode. Rezultati dobijeni nakon višestruke statističke evaluacije (one way ANOVA, LSD past hoc test) ne pokazuju značajne razlike u stepenu konverzije različitih preparata kompozitnih cemenata. Nasuprot tome, rezultati HPLC analize beleže značajne razlike u količini i vrsti monomernih supstanci otpuštenih iz kompozitnih cemenata. Takođe, statistička analiza u okviru ove studije nije pokazala korelaciju stepena konverzije ispitivanih kompozitnih dentalnih cemenata i količine oslobođenih supstanci iz ovih materijala.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Correlation between the degree of conversion and the elution of leachable components from dental resin-based cements
T1  - Korelacija stepena konverzije i količine oslobođenih supstanci iz dentalnih kompozitnih cemenata
VL  - 76
IS  - 9
SP  - 1307
EP  - 1323
DO  - 10.2298/JSC100610113O
ER  - 

@article{
author = "Obradović-Đuričić, Kosovka and Medić, Vesna and Radišić, Marina and Laušević, Mila",
year = "2011",
abstract = "This study examined the possible correlation between the degree of conversion (DC) and the amount of substances eluted from three commercial cured resin-based cements. The DC of the various resin-based cements was measured by Raman spectroscopy, while the quantity of unreacted monomers released from the cement matrix (triethylene glycol dimethacrylate, TEGDMA, urethane dimethacrylate, UDMA, 2-hydroxyethyl methacrylate, HEMA and bisphenol A) was determined by high pressure liquid chromatography (HPLC). The obtained results, after multiple statistical evaluation (one way ANOVA, LSD post hoc test), showed no significant differences in the DC values between the resin cements. On the contrary, the results of the HPLC analysis depicted statistically significant differences between the three materials with respect to the amount of leached monomers. In addition, no correlation between the DC and the amount of eluted substances from the tested cured composite cements was found., Rad istražuje moguću korelaciju stepena konverzije (DC) i količine oslobođenih monomernih supstanci iz tri komercijalna preparata kompozitnih dentalnih cemenata. Stepen konverzije kompozitnih cemenata određen je metodom Raman spektroskopije, dok je količina neizreagovalih i oslobođenih monomera iz cementnog matriksa detektovana pomoću HPLC metode. Rezultati dobijeni nakon višestruke statističke evaluacije (one way ANOVA, LSD past hoc test) ne pokazuju značajne razlike u stepenu konverzije različitih preparata kompozitnih cemenata. Nasuprot tome, rezultati HPLC analize beleže značajne razlike u količini i vrsti monomernih supstanci otpuštenih iz kompozitnih cemenata. Takođe, statistička analiza u okviru ove studije nije pokazala korelaciju stepena konverzije ispitivanih kompozitnih dentalnih cemenata i količine oslobođenih supstanci iz ovih materijala.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Correlation between the degree of conversion and the elution of leachable components from dental resin-based cements, Korelacija stepena konverzije i količine oslobođenih supstanci iz dentalnih kompozitnih cemenata",
volume = "76",
number = "9",
pages = "1307-1323",
doi = "10.2298/JSC100610113O"
}

Obradović-Đuričić, K., Medić, V., Radišić, M.,& Laušević, M.. (2011). Correlation between the degree of conversion and the elution of leachable components from dental resin-based cements. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 76(9), 1307-1323.
https://doi.org/10.2298/JSC100610113O

Obradović-Đuričić K, Medić V, Radišić M, Laušević M. Correlation between the degree of conversion and the elution of leachable components from dental resin-based cements. in Journal of the Serbian Chemical Society. 2011;76(9):1307-1323.
doi:10.2298/JSC100610113O .

Obradović-Đuričić, Kosovka, Medić, Vesna, Radišić, Marina, Laušević, Mila, "Correlation between the degree of conversion and the elution of leachable components from dental resin-based cements" in Journal of the Serbian Chemical Society, 76, no. 9 (2011):1307-1323,
https://doi.org/10.2298/JSC100610113O . .

TY  - JOUR
AU  - Medić, Vesna
AU  - Obradović-Đuričić, Kosovka
AU  - Dodić, Slobodan
AU  - Petrović, Renata
PY  - 2010
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1575
AB  - Introduction. Microleakage is defined as the clinically undetectable seepage of oral fluids containing bacteria and debris between cement layer and tooth restoration. Objective. This in vitro study investigated the effect of different dental cements (zinc-phosphate, polycarboxylate, glass-ionomer and resin cement) on microleakage in different ceramic crown systems (metal ceramic crown, metal ceramic crown with a porcelain margin, Empress 2 and In Ceram all-ceramic crowns) fixed on extracted human teeth. Methods. One hundred and sixty intact human premolars were randomized to four groups of forty teeth each, according to the different ceramic crown systems. They were prepared in a standardized manner for metal-ceramic and all-ceramic crowns. Crowns were made following a standard laboratory technique, and each group of crowns were divided into four groups according to the different cement agents and cemented on their respective abutments. The specimens were subjected to thermocycling, placed in methylene blue solutions, embedded in resin blocks and vertically cut in the bucco-oral and meso-distal direction. The microleakage in the area of tooth-cement interface was defined as linear penetration of methylene blue and was determined with a microscope to assign microleakage scores using a five-point scale. Results. A significant association was found between a cement type and degree of microleakage (p=0.001). No statistically significant differences were found among the different ceramic crown systems luted with the same dental cement. The smallest degree of microleakage was observed in specimens luted with resin cement (X=1.73), followed by glass-ionomer cement (X=2.45) and polycarboxylate cement (X=3.20). The greatest degree of microleakage was detected in the crowns fixed with zincphosphate cement (X=3.33). Conclusion. The investigated dental cements revealed different sealing abilities. The use of resin cement resulted in the percentage of 0 microleakage scores. Due to this feature, the resin cement is to be recommended in everyday clinical practice.
AB  - Uvod. Mikropropustljivost je klinički neuočljivo prodiranje tečnosti, bakterija, molekula i jona između cementnog sloja i dentina ili cementnog sloja i nadoknade. Ovaj problem je od velikog praktičnog značaja za trajnost fiksnih nadoknada. Cilj rada. Cilj ovog istraživanja in vitro bio je da se ispita uticaj različitih dentalnih cementa (cink-fosfatni, polikarboksilatni, glasjonomer i kompozitni cement) na mikropropustljivost krunica izrađenih od različitih materijala (metalokeramičke, metalokeramičke s rubom u keramici i keramičke krunice Empress2 i In Ceram Alumina), cementiranih na eksperimentalnim modelima ekstrahovanih zuba. Metode rada. Korišćeno je 160 ekstrahovanih intaktnih premolara koji su prema vrsti krunice svrstani u četiri grupe sa po 40 uzoraka u svakoj. Zubi su uobičajenim postupkom pripremljeni za prihvatanje metalokeramičkih i keramičkih krunica. Odgovarajućim laboratorijskim postupkom izrađene su krunice. Unutar svake grupe izvršena je dodatna podela uzoraka na četiri podgrupe od po 10 eksperimentalnih parova, u zavisnosti od tipa cementa kojim je krunica cementirana. Cementirani parovi su podvrgnuti termocikliranju, potopljeni u rastvor metilen-plavog, postavljeni u blokove epoksi smole, a zatim sečeni paralelno s aksijalnom osom zuba u meziodistalnom i bukooralnom pravcu. Mikropropustljivost je definisana kao dubina linearnog prodora boje duž spoja dentina i cementa, procenjena je primenom mikroskopa i iskazana skalom sa gradacijom u prodoru boje od 0 do 5 bodova. Rezultati. Analizom dobijenih rezultata uočena je statistički značajna povezanost između vrste cementa i stepena mikropropustljivosti (p=0,001). Analizom dubine prodora boje između različitih krunica cementiranih istom vrstom cementa nije uočena statistički značajna razlika. Statistički značajno najmanje vrednosti mikropropustljivosti zabeležene su kod kompozitnog cementa (srednja vrednost bodova 1,73), nešto veće vrednosti pokazao je glasjonomer (srednja vrednost bodova 2,45) i polikarboksilatni cement (srednja vrednost bodova 3,20). Najveći stepen mikropropustljivosti uočen je kod krunica cementiranih cink-fosfatnim cementom (srednja vrednost bodova 3,33). Zaključak. Ispitivani dentalni cementi imaju različitu sposobnost rubnog zatvaranja. Najmanja mikropropustljivost, iskazana sa 0 bodova, zabeležena je kod kompozitnog cementa, zbog čega se on preporučuje za primenu u svakodnevnoj kliničkoj praksi.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - In vitro evaluation of microleakage of various types of dental cements
T1  - Ispitivanje mikropropustljivosti različitih vrsta dentalnih cementa in vitro
VL  - 138
IS  - 3-4
SP  - 143
EP  - 149
DO  - 10.2298/SARH1004143M
ER  - 

@article{
author = "Medić, Vesna and Obradović-Đuričić, Kosovka and Dodić, Slobodan and Petrović, Renata",
year = "2010",
abstract = "Introduction. Microleakage is defined as the clinically undetectable seepage of oral fluids containing bacteria and debris between cement layer and tooth restoration. Objective. This in vitro study investigated the effect of different dental cements (zinc-phosphate, polycarboxylate, glass-ionomer and resin cement) on microleakage in different ceramic crown systems (metal ceramic crown, metal ceramic crown with a porcelain margin, Empress 2 and In Ceram all-ceramic crowns) fixed on extracted human teeth. Methods. One hundred and sixty intact human premolars were randomized to four groups of forty teeth each, according to the different ceramic crown systems. They were prepared in a standardized manner for metal-ceramic and all-ceramic crowns. Crowns were made following a standard laboratory technique, and each group of crowns were divided into four groups according to the different cement agents and cemented on their respective abutments. The specimens were subjected to thermocycling, placed in methylene blue solutions, embedded in resin blocks and vertically cut in the bucco-oral and meso-distal direction. The microleakage in the area of tooth-cement interface was defined as linear penetration of methylene blue and was determined with a microscope to assign microleakage scores using a five-point scale. Results. A significant association was found between a cement type and degree of microleakage (p=0.001). No statistically significant differences were found among the different ceramic crown systems luted with the same dental cement. The smallest degree of microleakage was observed in specimens luted with resin cement (X=1.73), followed by glass-ionomer cement (X=2.45) and polycarboxylate cement (X=3.20). The greatest degree of microleakage was detected in the crowns fixed with zincphosphate cement (X=3.33). Conclusion. The investigated dental cements revealed different sealing abilities. The use of resin cement resulted in the percentage of 0 microleakage scores. Due to this feature, the resin cement is to be recommended in everyday clinical practice., Uvod. Mikropropustljivost je klinički neuočljivo prodiranje tečnosti, bakterija, molekula i jona između cementnog sloja i dentina ili cementnog sloja i nadoknade. Ovaj problem je od velikog praktičnog značaja za trajnost fiksnih nadoknada. Cilj rada. Cilj ovog istraživanja in vitro bio je da se ispita uticaj različitih dentalnih cementa (cink-fosfatni, polikarboksilatni, glasjonomer i kompozitni cement) na mikropropustljivost krunica izrađenih od različitih materijala (metalokeramičke, metalokeramičke s rubom u keramici i keramičke krunice Empress2 i In Ceram Alumina), cementiranih na eksperimentalnim modelima ekstrahovanih zuba. Metode rada. Korišćeno je 160 ekstrahovanih intaktnih premolara koji su prema vrsti krunice svrstani u četiri grupe sa po 40 uzoraka u svakoj. Zubi su uobičajenim postupkom pripremljeni za prihvatanje metalokeramičkih i keramičkih krunica. Odgovarajućim laboratorijskim postupkom izrađene su krunice. Unutar svake grupe izvršena je dodatna podela uzoraka na četiri podgrupe od po 10 eksperimentalnih parova, u zavisnosti od tipa cementa kojim je krunica cementirana. Cementirani parovi su podvrgnuti termocikliranju, potopljeni u rastvor metilen-plavog, postavljeni u blokove epoksi smole, a zatim sečeni paralelno s aksijalnom osom zuba u meziodistalnom i bukooralnom pravcu. Mikropropustljivost je definisana kao dubina linearnog prodora boje duž spoja dentina i cementa, procenjena je primenom mikroskopa i iskazana skalom sa gradacijom u prodoru boje od 0 do 5 bodova. Rezultati. Analizom dobijenih rezultata uočena je statistički značajna povezanost između vrste cementa i stepena mikropropustljivosti (p=0,001). Analizom dubine prodora boje između različitih krunica cementiranih istom vrstom cementa nije uočena statistički značajna razlika. Statistički značajno najmanje vrednosti mikropropustljivosti zabeležene su kod kompozitnog cementa (srednja vrednost bodova 1,73), nešto veće vrednosti pokazao je glasjonomer (srednja vrednost bodova 2,45) i polikarboksilatni cement (srednja vrednost bodova 3,20). Najveći stepen mikropropustljivosti uočen je kod krunica cementiranih cink-fosfatnim cementom (srednja vrednost bodova 3,33). Zaključak. Ispitivani dentalni cementi imaju različitu sposobnost rubnog zatvaranja. Najmanja mikropropustljivost, iskazana sa 0 bodova, zabeležena je kod kompozitnog cementa, zbog čega se on preporučuje za primenu u svakodnevnoj kliničkoj praksi.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "In vitro evaluation of microleakage of various types of dental cements, Ispitivanje mikropropustljivosti različitih vrsta dentalnih cementa in vitro",
volume = "138",
number = "3-4",
pages = "143-149",
doi = "10.2298/SARH1004143M"
}

Medić, V., Obradović-Đuričić, K., Dodić, S.,& Petrović, R.. (2010). In vitro evaluation of microleakage of various types of dental cements. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 138(3-4), 143-149.
https://doi.org/10.2298/SARH1004143M

Medić V, Obradović-Đuričić K, Dodić S, Petrović R. In vitro evaluation of microleakage of various types of dental cements. in Srpski arhiv za celokupno lekarstvo. 2010;138(3-4):143-149.
doi:10.2298/SARH1004143M .

Medić, Vesna, Obradović-Đuričić, Kosovka, Dodić, Slobodan, Petrović, Renata, "In vitro evaluation of microleakage of various types of dental cements" in Srpski arhiv za celokupno lekarstvo, 138, no. 3-4 (2010):143-149,
https://doi.org/10.2298/SARH1004143M . .

TY  - JOUR
AU  - Dodić, Slobodan
AU  - Sinobad, Vladimir
AU  - Obradović-Đuričić, Kosovka
AU  - Medić, Vesna
PY  - 2009
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1465
AB  - Introduction. The influence of occlusal condition at the onset of temporomandibular disorders (TMD) has been strongly debated for many years and still is the source of controversy. Up to the eighties in the last century, the occlusal factors such as the presence of uncured malocclusions, discrepancies between intercuspal position and retruded contact position greater than two millimeters, retrusive and nonworking side interferences and loss of posterior teeth were considered to be the primary causes of TMD. Objective. The aim of this study was to estimate the role of occlusal factor in the etiology of craniomandibular dysfunction and therapeutic effects of irreversible occlusal therapy (occlusal equilibration) in patients with TMD. Methods. In the investigation we studied a group of 200 men and women. The average age of the selected patients was between18 and 25 years. The purpose of TMD signs and symptoms was confirmed in every patient using a special functional analysis and evaluating the craniomandibular index (CMI) according to Fricton and Schiffman. The value of craniomandibular index was determined in the group of 15 patients with signs and symptoms of temporomandibular dysfunction. In the study groups occlusal equilibration (selective grinding) was performed according to Okeson using the central position of the mandible as the referent position in the occlusal therapy. The value of CMI was determined before and 30 days after occlusal equilibration. Results. The results of this study confirmed the significant reduction in the signs and symptoms of TMD after occlusal equilibration. The statistical elaboration of the differences between the values of CMI I (before treatment) and CMI II (30 days after treatment) revealed highly significant differences. The CMI I values in the group ranged between 0.076 and 0.346 with the mean value of 0.188±0.082.The values of CMI II ranged between 0.038 and 0.19 with the mean value of 0.038±0.053. Conclusion. The study conformed the validity of irreversible occlusal therapy (selective grinding) in patients with TMD.
AB  - Uvod. Uloga okluzivnih disharmonija u nastanku temporo-mandibularnih disfunkcija (TMD) i dalje je pitanje u stručnoj literaturi i kliničkoj praksi koje ostaje bez odgovora. Do osamdesetih godina dvadesetog veka okluzivni faktori, kao što su određene malokluzije, razlike između retrudovanog kontaktnog položaja i interkuspalnog položaja veće od 2 mm, okluzivne smetnje (posebno mediotruzijske i retruzijske) i gubitak bočnih zuba, smatrali su se glavnim etiološkim faktorima u nastanku TMD. Cilj rada. Cilj rada je bio da se utvrdi uloga okluzivnih faktora u razvoju TMD i oceni uspeh primene ireverzibilne okluzivne terapije (selektivno brušenje) kod osoba sa TMD. Metode rada. U svrhu istraživanja pregledano je 200 osoba oba pola uzrasta 18-25 godina. Znaci i simptomi TMD su vrednovani na osnovu posebne funkcionalne analize i izraženi kraniomandibularnim indeksom (CMI) po Friktonu (Fricton) i Šifmanu (Schiffman). Na osnovu ovoga indeksa formirana je studijska grupa koju je činilo 15 ispitanika sa znacima i simptomima TMD. Kod njih je urađeno selektivno uklanjanje okluzivnih smetnji brušenjem prema metodi Oksona (Okeson) korišćenjem centralnog položaja kao referentnog položaja tokom okluzivne terapije. Vrednovanje CMI je ponovljeno trideset dana nakon okluzivnog uravnoteženja. Rezultati. Rezultati istraživanja su pokazali značajno smanjenje znakova i simptoma TMD posle okluzivnog uravnoteženja. Statističkom analizom je utvrđeno da između vrednosti CMI pre lečenja (CMI I) i trideset dana kanije (CMI II) postoji statistički značajna razlika. Vrednost CMI I bila je između 0,076 i 0,0346, dok je srednja vrednost bila 0,188±0,082. Vrednost CMI II bila je između 0,038 i 0,19, a srednja vrednost 0,038±0,053. Zaključak. Ova studija je potvrdila značaj ireverzibilne okluzivne terapije (selektivno brušenje) kod osoba sa TMD.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - The role of occlusal factor in the etiology of temporomandibular dysfunction
T1  - Uloga okluzije u nastanku temporomandibularnih disfunkcija
VL  - 137
IS  - 11-12
SP  - 613
EP  - 618
DO  - 10.2298/SARH0912613D
ER  - 

@article{
author = "Dodić, Slobodan and Sinobad, Vladimir and Obradović-Đuričić, Kosovka and Medić, Vesna",
year = "2009",
abstract = "Introduction. The influence of occlusal condition at the onset of temporomandibular disorders (TMD) has been strongly debated for many years and still is the source of controversy. Up to the eighties in the last century, the occlusal factors such as the presence of uncured malocclusions, discrepancies between intercuspal position and retruded contact position greater than two millimeters, retrusive and nonworking side interferences and loss of posterior teeth were considered to be the primary causes of TMD. Objective. The aim of this study was to estimate the role of occlusal factor in the etiology of craniomandibular dysfunction and therapeutic effects of irreversible occlusal therapy (occlusal equilibration) in patients with TMD. Methods. In the investigation we studied a group of 200 men and women. The average age of the selected patients was between18 and 25 years. The purpose of TMD signs and symptoms was confirmed in every patient using a special functional analysis and evaluating the craniomandibular index (CMI) according to Fricton and Schiffman. The value of craniomandibular index was determined in the group of 15 patients with signs and symptoms of temporomandibular dysfunction. In the study groups occlusal equilibration (selective grinding) was performed according to Okeson using the central position of the mandible as the referent position in the occlusal therapy. The value of CMI was determined before and 30 days after occlusal equilibration. Results. The results of this study confirmed the significant reduction in the signs and symptoms of TMD after occlusal equilibration. The statistical elaboration of the differences between the values of CMI I (before treatment) and CMI II (30 days after treatment) revealed highly significant differences. The CMI I values in the group ranged between 0.076 and 0.346 with the mean value of 0.188±0.082.The values of CMI II ranged between 0.038 and 0.19 with the mean value of 0.038±0.053. Conclusion. The study conformed the validity of irreversible occlusal therapy (selective grinding) in patients with TMD., Uvod. Uloga okluzivnih disharmonija u nastanku temporo-mandibularnih disfunkcija (TMD) i dalje je pitanje u stručnoj literaturi i kliničkoj praksi koje ostaje bez odgovora. Do osamdesetih godina dvadesetog veka okluzivni faktori, kao što su određene malokluzije, razlike između retrudovanog kontaktnog položaja i interkuspalnog položaja veće od 2 mm, okluzivne smetnje (posebno mediotruzijske i retruzijske) i gubitak bočnih zuba, smatrali su se glavnim etiološkim faktorima u nastanku TMD. Cilj rada. Cilj rada je bio da se utvrdi uloga okluzivnih faktora u razvoju TMD i oceni uspeh primene ireverzibilne okluzivne terapije (selektivno brušenje) kod osoba sa TMD. Metode rada. U svrhu istraživanja pregledano je 200 osoba oba pola uzrasta 18-25 godina. Znaci i simptomi TMD su vrednovani na osnovu posebne funkcionalne analize i izraženi kraniomandibularnim indeksom (CMI) po Friktonu (Fricton) i Šifmanu (Schiffman). Na osnovu ovoga indeksa formirana je studijska grupa koju je činilo 15 ispitanika sa znacima i simptomima TMD. Kod njih je urađeno selektivno uklanjanje okluzivnih smetnji brušenjem prema metodi Oksona (Okeson) korišćenjem centralnog položaja kao referentnog položaja tokom okluzivne terapije. Vrednovanje CMI je ponovljeno trideset dana nakon okluzivnog uravnoteženja. Rezultati. Rezultati istraživanja su pokazali značajno smanjenje znakova i simptoma TMD posle okluzivnog uravnoteženja. Statističkom analizom je utvrđeno da između vrednosti CMI pre lečenja (CMI I) i trideset dana kanije (CMI II) postoji statistički značajna razlika. Vrednost CMI I bila je između 0,076 i 0,0346, dok je srednja vrednost bila 0,188±0,082. Vrednost CMI II bila je između 0,038 i 0,19, a srednja vrednost 0,038±0,053. Zaključak. Ova studija je potvrdila značaj ireverzibilne okluzivne terapije (selektivno brušenje) kod osoba sa TMD.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "The role of occlusal factor in the etiology of temporomandibular dysfunction, Uloga okluzije u nastanku temporomandibularnih disfunkcija",
volume = "137",
number = "11-12",
pages = "613-618",
doi = "10.2298/SARH0912613D"
}

Dodić, S., Sinobad, V., Obradović-Đuričić, K.,& Medić, V.. (2009). The role of occlusal factor in the etiology of temporomandibular dysfunction. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 137(11-12), 613-618.
https://doi.org/10.2298/SARH0912613D

Dodić S, Sinobad V, Obradović-Đuričić K, Medić V. The role of occlusal factor in the etiology of temporomandibular dysfunction. in Srpski arhiv za celokupno lekarstvo. 2009;137(11-12):613-618.
doi:10.2298/SARH0912613D .

Dodić, Slobodan, Sinobad, Vladimir, Obradović-Đuričić, Kosovka, Medić, Vesna, "The role of occlusal factor in the etiology of temporomandibular dysfunction" in Srpski arhiv za celokupno lekarstvo, 137, no. 11-12 (2009):613-618,
https://doi.org/10.2298/SARH0912613D . .

TY  - JOUR
AU  - Medić, Vesna
AU  - Obradović-Đuričić, Kosovka
PY  - 2008
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1387
AB  - INTRODUCTION Crown displacement often occurs because the features of tooth preparations do not counteract the forces directed against restorations. OBJECTIVE The purpose of this study was to evaluate the effect of preparation designs on retention and resistance of fixed restorations. METHOD The study was performed on 64 differently sized stainless steel dies. Also, caps which were used for evaluated retention were made of stainless steel for each die. After cementing the caps on experimental dies, measuring of necessary tensile forces to separate cemented caps from dies was done. Caps, which were made of a silver-palladium alloy with a slope of 60° to the longitudinal axis formed on the occlusal surface, were used for evaluating resistance. A sudden drop in load pressure recorded by the test machine indicated failure for that cap. RESULTS A significant difference was found between the tensile force required to remove the caps from the dies with different length (p lt 0.05) and different taper (p lt 0.01). The greatest retentive strengths (2579.2 N and 2989.8 N) were noticed in experimental dies with the greatest length and smallest taper. No statistically significant (p>0.05) differences were found between tensile loads for caps cemented on dies with different diameter. Although there was an apparent slight increase in resistance values for caps on dies with smaller tapers, the increase in resistance for those preparation designs was not statistically significant. There was a significant difference among the resistance values for caps on dies with different length (p lt 0.01) and diameter (p lt 0.05). CONCLUSION In the light of the results obtained, it could be reasonably concluded that retention and resistance of the restoration is in inverse proportion to convergence angle of the prepared teeth. But, at a constant convergence angle, retention and resistance increase with rising length and diameter.
AB  - (Uvod) Pomeranje krunice iz njenog ležišta na zubu često nastaje kao posledica neodgovarajuće geometrijske konfiguracije brušenog zuba koji nije u mogućnosti da se suprotstavi dislocirajućim silama koje deluju na nadoknadu. (Cilj rada) Cilj rada je bio da se proceni uticaj preparativnog dizajna na retenciju i stabilizaciju fiksnih nadoknada. (Metod rada) Za ispitivanje su korišćena 64 različito dimenzionirana eksperimentalna patrljka od nerđajućeg čelika. Kapice, izrađene za svaki eksperimentalni patrljak, takođe od nerđajućeg čelika, upotrebljene su za ispitivanje retencije. Posle cementiranja kapica na eksperimentalne patrljke obavljeno je merenje jačina sila zatezanja potrebnih za razdvajanje cementiranih kapica od patrljka. Kapice izrađene od legure srebra i paladijuma sa nagibom okluzivne površine od 60° u odnosu na uzdužnu osu korišćene su za ispitivanje stabilizacije. Početak pomeranja kapice pod dejstvom sila pritiska manifestovao se naglim padom sile, što je grafički zabeleženo. (Rezultati) Statistički značajna razlika je uočena između vrednosti sila zatezanja potrebnih za razdvajanje kapice od eksperimentalnih patrljaka različite dužine (p lt 0,05) i različitog nagiba aksijalnih površina (p lt 0,01). Najveće vrednosti sila retencije zabeležene su kod eksperimentalnih patrljaka najveće dužine i najmanjeg nagiba aksijalnih površina. Statistički značajna razlika između vrednosti sila zatezanja potrebnih za razdvajanje kapica cementiranih na eksperimentalnim patrljcima različitog prečnika nije uočena (p>0,05). Iako smanjenjem nagiba aksijalnih površina eksperimentalnih patrljaka dolazi do povećanja vrednosti sila pritiska, uočena razlika nije statistički značajna. Vrednosti jačine sila pritiska statistički se značajno razlikuju za eksperimentalne patrljke različite dužine (p lt 0,01) i različitog prečnika (p lt 0,05). (Zaključak) Na osnovu rezultata može se zaključiti da su retencija i stabilizacija fiksne nadoknade obrnuto srazmerne nagibu aksijalnih površina brušenog zuba, dok su pri konstantnom nagibu aksijalnih površina brušenog zuba upravo srazmerne njegovoj dužini i prečniku.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Factors influencing bonding fixed restorations
T1  - Faktori koji utiču na vezivanje fiksnih nadoknada
VL  - 136
IS  - 5-6
SP  - 232
EP  - 240
DO  - 10.2298/SARH0806232M
ER  - 

@article{
author = "Medić, Vesna and Obradović-Đuričić, Kosovka",
year = "2008",
abstract = "INTRODUCTION Crown displacement often occurs because the features of tooth preparations do not counteract the forces directed against restorations. OBJECTIVE The purpose of this study was to evaluate the effect of preparation designs on retention and resistance of fixed restorations. METHOD The study was performed on 64 differently sized stainless steel dies. Also, caps which were used for evaluated retention were made of stainless steel for each die. After cementing the caps on experimental dies, measuring of necessary tensile forces to separate cemented caps from dies was done. Caps, which were made of a silver-palladium alloy with a slope of 60° to the longitudinal axis formed on the occlusal surface, were used for evaluating resistance. A sudden drop in load pressure recorded by the test machine indicated failure for that cap. RESULTS A significant difference was found between the tensile force required to remove the caps from the dies with different length (p lt 0.05) and different taper (p lt 0.01). The greatest retentive strengths (2579.2 N and 2989.8 N) were noticed in experimental dies with the greatest length and smallest taper. No statistically significant (p>0.05) differences were found between tensile loads for caps cemented on dies with different diameter. Although there was an apparent slight increase in resistance values for caps on dies with smaller tapers, the increase in resistance for those preparation designs was not statistically significant. There was a significant difference among the resistance values for caps on dies with different length (p lt 0.01) and diameter (p lt 0.05). CONCLUSION In the light of the results obtained, it could be reasonably concluded that retention and resistance of the restoration is in inverse proportion to convergence angle of the prepared teeth. But, at a constant convergence angle, retention and resistance increase with rising length and diameter., (Uvod) Pomeranje krunice iz njenog ležišta na zubu često nastaje kao posledica neodgovarajuće geometrijske konfiguracije brušenog zuba koji nije u mogućnosti da se suprotstavi dislocirajućim silama koje deluju na nadoknadu. (Cilj rada) Cilj rada je bio da se proceni uticaj preparativnog dizajna na retenciju i stabilizaciju fiksnih nadoknada. (Metod rada) Za ispitivanje su korišćena 64 različito dimenzionirana eksperimentalna patrljka od nerđajućeg čelika. Kapice, izrađene za svaki eksperimentalni patrljak, takođe od nerđajućeg čelika, upotrebljene su za ispitivanje retencije. Posle cementiranja kapica na eksperimentalne patrljke obavljeno je merenje jačina sila zatezanja potrebnih za razdvajanje cementiranih kapica od patrljka. Kapice izrađene od legure srebra i paladijuma sa nagibom okluzivne površine od 60° u odnosu na uzdužnu osu korišćene su za ispitivanje stabilizacije. Početak pomeranja kapice pod dejstvom sila pritiska manifestovao se naglim padom sile, što je grafički zabeleženo. (Rezultati) Statistički značajna razlika je uočena između vrednosti sila zatezanja potrebnih za razdvajanje kapice od eksperimentalnih patrljaka različite dužine (p lt 0,05) i različitog nagiba aksijalnih površina (p lt 0,01). Najveće vrednosti sila retencije zabeležene su kod eksperimentalnih patrljaka najveće dužine i najmanjeg nagiba aksijalnih površina. Statistički značajna razlika između vrednosti sila zatezanja potrebnih za razdvajanje kapica cementiranih na eksperimentalnim patrljcima različitog prečnika nije uočena (p>0,05). Iako smanjenjem nagiba aksijalnih površina eksperimentalnih patrljaka dolazi do povećanja vrednosti sila pritiska, uočena razlika nije statistički značajna. Vrednosti jačine sila pritiska statistički se značajno razlikuju za eksperimentalne patrljke različite dužine (p lt 0,01) i različitog prečnika (p lt 0,05). (Zaključak) Na osnovu rezultata može se zaključiti da su retencija i stabilizacija fiksne nadoknade obrnuto srazmerne nagibu aksijalnih površina brušenog zuba, dok su pri konstantnom nagibu aksijalnih površina brušenog zuba upravo srazmerne njegovoj dužini i prečniku.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Factors influencing bonding fixed restorations, Faktori koji utiču na vezivanje fiksnih nadoknada",
volume = "136",
number = "5-6",
pages = "232-240",
doi = "10.2298/SARH0806232M"
}

Medić, V.,& Obradović-Đuričić, K.. (2008). Factors influencing bonding fixed restorations. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 136(5-6), 232-240.
https://doi.org/10.2298/SARH0806232M

Medić V, Obradović-Đuričić K. Factors influencing bonding fixed restorations. in Srpski arhiv za celokupno lekarstvo. 2008;136(5-6):232-240.
doi:10.2298/SARH0806232M .

Medić, Vesna, Obradović-Đuričić, Kosovka, "Factors influencing bonding fixed restorations" in Srpski arhiv za celokupno lekarstvo, 136, no. 5-6 (2008):232-240,
https://doi.org/10.2298/SARH0806232M . .

TY  - JOUR
AU  - Milutinović-Nikolić, Aleksandra D.
AU  - Medić, Vesna
AU  - Vuković, Zorica
PY  - 2007
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1343
AB  - Objective. The aim of this in vitro study was to compare open porosity and pore size distribution of different types of luting cements (zinc phosphate and polycarboxylate produced by Harvard Cement, Great Britain, glass-ionomer product GC Fuji I, GC Corporation, Japan, and Panavia F, resin based composite cement, Kurraray Co. Ltd. Japan) using mercury intrusion porosimetry and use it as an additional parameter for ranging the quality of cements used in prosthetics. Method. Samples were hand mixed in accordance with the manufacturer's instructions and formed in cylindrical test specimens. Density of samples was determined using a pycnometer while porous structure was estimated using high pressure mercury intrusion porosimeter enabling estimation of pore diameters in interval 7.5-15,000 nm. Results. The polycarboxylate cement posses the highest porosity and specific pore volume among investigated cements. By comparison of the results obtained for zinc phosphate and glass-ionomer cement, it can be observed that according to some textural properties zinc phosphate cement is better choice (smaller specific pore volume and absence of macropores larger than 1 mu m) while according to other textural properties the glass-ionomer has advantage (smaller porosity). The resin based composite cement poses the most desired porous structure for prosthetic application among the investigated cements (the lowest porosity and specific pore volume and all identified pores are smaller than 20 nm). Significance. Based on results of this study, it is possible to estimate the efficiency of luting cements to protect the interior of tooth from penetration of oral fluids, bacteria and bacterial toxins into unprotected dentine.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dental Materials
T1  - Porosity of different dental luting cements
VL  - 23
IS  - 6
SP  - 674
EP  - 678
DO  - 10.1016/j.dental.2006.06.006
ER  - 

@article{
author = "Milutinović-Nikolić, Aleksandra D. and Medić, Vesna and Vuković, Zorica",
year = "2007",
abstract = "Objective. The aim of this in vitro study was to compare open porosity and pore size distribution of different types of luting cements (zinc phosphate and polycarboxylate produced by Harvard Cement, Great Britain, glass-ionomer product GC Fuji I, GC Corporation, Japan, and Panavia F, resin based composite cement, Kurraray Co. Ltd. Japan) using mercury intrusion porosimetry and use it as an additional parameter for ranging the quality of cements used in prosthetics. Method. Samples were hand mixed in accordance with the manufacturer's instructions and formed in cylindrical test specimens. Density of samples was determined using a pycnometer while porous structure was estimated using high pressure mercury intrusion porosimeter enabling estimation of pore diameters in interval 7.5-15,000 nm. Results. The polycarboxylate cement posses the highest porosity and specific pore volume among investigated cements. By comparison of the results obtained for zinc phosphate and glass-ionomer cement, it can be observed that according to some textural properties zinc phosphate cement is better choice (smaller specific pore volume and absence of macropores larger than 1 mu m) while according to other textural properties the glass-ionomer has advantage (smaller porosity). The resin based composite cement poses the most desired porous structure for prosthetic application among the investigated cements (the lowest porosity and specific pore volume and all identified pores are smaller than 20 nm). Significance. Based on results of this study, it is possible to estimate the efficiency of luting cements to protect the interior of tooth from penetration of oral fluids, bacteria and bacterial toxins into unprotected dentine.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dental Materials",
title = "Porosity of different dental luting cements",
volume = "23",
number = "6",
pages = "674-678",
doi = "10.1016/j.dental.2006.06.006"
}

Milutinović-Nikolić, A. D., Medić, V.,& Vuković, Z.. (2007). Porosity of different dental luting cements. in Dental Materials
Elsevier Sci Ltd, Oxford., 23(6), 674-678.
https://doi.org/10.1016/j.dental.2006.06.006

Milutinović-Nikolić AD, Medić V, Vuković Z. Porosity of different dental luting cements. in Dental Materials. 2007;23(6):674-678.
doi:10.1016/j.dental.2006.06.006 .

Milutinović-Nikolić, Aleksandra D., Medić, Vesna, Vuković, Zorica, "Porosity of different dental luting cements" in Dental Materials, 23, no. 6 (2007):674-678,
https://doi.org/10.1016/j.dental.2006.06.006 . .

TY  - THES
AU  - Medić, Vesna
PY  - 2006
UR  - https://plus.sr.cobiss.net/opac7/bib/31490319
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/429
PB  - Univerzitet u Beogradu, Stomatološki fakultet
T1  - Procena kvaliteta rubnog zatvaranja brušenih zuba fiksnim nadoknadama
UR  - https://hdl.handle.net/21.15107/rcub_smile_429
ER  - 

@phdthesis{
author = "Medić, Vesna",
year = "2006",
publisher = "Univerzitet u Beogradu, Stomatološki fakultet",
title = "Procena kvaliteta rubnog zatvaranja brušenih zuba fiksnim nadoknadama",
url = "https://hdl.handle.net/21.15107/rcub_smile_429"
}

Medić, V.. (2006). Procena kvaliteta rubnog zatvaranja brušenih zuba fiksnim nadoknadama. 
Univerzitet u Beogradu, Stomatološki fakultet..
https://hdl.handle.net/21.15107/rcub_smile_429

Medić V. Procena kvaliteta rubnog zatvaranja brušenih zuba fiksnim nadoknadama. 2006;.
https://hdl.handle.net/21.15107/rcub_smile_429 .

Medić, Vesna, "Procena kvaliteta rubnog zatvaranja brušenih zuba fiksnim nadoknadama" (2006),
https://hdl.handle.net/21.15107/rcub_smile_429 .

TY  - THES
AU  - Medić, Vesna
PY  - 1993
UR  - https://plus.sr.cobiss.net/opac7/bib/1024041102
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/286
PB  - Univerzitet u Beogradu, Stomatološki fakultet
T1  - Ispitivanje faktora koji utiču na jačinu vezivanja fiksnih zubnih nadoknada
UR  - https://hdl.handle.net/21.15107/rcub_smile_286
ER  - 

@mastersthesis{
author = "Medić, Vesna",
year = "1993",
publisher = "Univerzitet u Beogradu, Stomatološki fakultet",
title = "Ispitivanje faktora koji utiču na jačinu vezivanja fiksnih zubnih nadoknada",
url = "https://hdl.handle.net/21.15107/rcub_smile_286"
}

Medić, V.. (1993). Ispitivanje faktora koji utiču na jačinu vezivanja fiksnih zubnih nadoknada. 
Univerzitet u Beogradu, Stomatološki fakultet..
https://hdl.handle.net/21.15107/rcub_smile_286

Medić V. Ispitivanje faktora koji utiču na jačinu vezivanja fiksnih zubnih nadoknada. 1993;.
https://hdl.handle.net/21.15107/rcub_smile_286 .

Medić, Vesna, "Ispitivanje faktora koji utiču na jačinu vezivanja fiksnih zubnih nadoknada" (1993),
https://hdl.handle.net/21.15107/rcub_smile_286 .