TY  - JOUR
AU  - Lazouzi, Gamal A.
AU  - Vuksanović, Marija M.
AU  - Tomić, Nataša Z.
AU  - Perić, Tamara
AU  - Volkov-Husović, Tatjana D.
AU  - Spasojević, Pavle M.
AU  - Jančić-Heinemann, Radmila M.
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2373
AB  - Dental materials have specific requirements regarding behavior in exploitation conditions. Poly (methyl methacrylate) (PMMA) is one of the most commonly used prosthetic materials. It is of interest to improve the mechanical properties of the polymer matrix by adding reinforcements in the form of ceramic particles. It has been shown that adding very small amounts of particles to the material, substantially improved mechanical properties of PMMA modified by dimethyl itaconate (PMMA/DMI). In this paper, different sorts of alumina fillers will be examined. Commercial alumina particles and micro particles of alumina obtained from the sol-gel technique influence the mechanical properties of the composite material obtained. Sol-gel techniques was the mean to synthesize pure alumina particles and ferrous oxide doped alumina particles. Composites are prepared with 1 wt. %, 3 wt. % and 5 wt. % of alumina based particles. It has been shown that all the tested fillers improve the flexular properties of the material relative to the pure matrix PMMA/DMI and the most suitable concentration of fillers was 1 wt. %. Among the types of fillers tested alumina particles obtained by sol-gel technique, perfomed in the best way in improving the flexural strength and modulus.
AB  - Dentalni materijali imaju posebne zahteve u vezi sa ponašanjem u uslovima eksploatacije. Poli(metil metakrilat) (PMMA) predstavlja jedan od često korišćenih materijala u protetici. Od značajnog je interesa da se poboljšaju mehanička svojstva polimerne matrice dodatkom ojačanja u obliku keramičkih čestica. Pokazalo se da se dodavanjem veoma malih količina čestica u materijal dobijaju bitno poboljšana mehanička svojstva PMMA modifikovanog dodatkom dimetil itakonata (PMMMA/DMI). U okviru ovog rada ispitaće se kako utiče dodatak komercijalnih nanočestica aluminijum oksida i mikro čestica aluminijum oksida dobijenih sol-gel tehnikom na mehanička svojstva dobijenog kompozitnog materijala. Sol-gel tehnikom sintetisane su čiste aluminijum oksidne čestice i čestice dopirane gvožđe oksidom. Pripremeljeni su kompozitni materijali sa 1 mas. %, 3 mas. % i 5 mas. % čestica na bazi aluminijum oksida. Pokazano je da svi testirani punioci poboljšavaju savojna svojstva materijala u odnosu na čistu matricu PMMA/DMI i da je najpogodnija količina čestica 1 mas. %. Između svih vrsta dodatih čestica, mikro čestice aluminijum oksida dobijenih sol-gel tehnikom su pokazale najbolje vrednosti poboljšanja savojne čvrstoće i modula.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate
T1  - Uticaj oblika i veličine čestica AL2O3 na savojna svojstva PMMA kompozita modifikovanog dodatkom dimetil itakonata
VL  - 73
IS  - 4
SP  - 511
EP  - 516
DO  - 10.5937/tehnika1804511L
ER  - 

@article{
author = "Lazouzi, Gamal A. and Vuksanović, Marija M. and Tomić, Nataša Z. and Perić, Tamara and Volkov-Husović, Tatjana D. and Spasojević, Pavle M. and Jančić-Heinemann, Radmila M.",
year = "2018",
abstract = "Dental materials have specific requirements regarding behavior in exploitation conditions. Poly (methyl methacrylate) (PMMA) is one of the most commonly used prosthetic materials. It is of interest to improve the mechanical properties of the polymer matrix by adding reinforcements in the form of ceramic particles. It has been shown that adding very small amounts of particles to the material, substantially improved mechanical properties of PMMA modified by dimethyl itaconate (PMMA/DMI). In this paper, different sorts of alumina fillers will be examined. Commercial alumina particles and micro particles of alumina obtained from the sol-gel technique influence the mechanical properties of the composite material obtained. Sol-gel techniques was the mean to synthesize pure alumina particles and ferrous oxide doped alumina particles. Composites are prepared with 1 wt. %, 3 wt. % and 5 wt. % of alumina based particles. It has been shown that all the tested fillers improve the flexular properties of the material relative to the pure matrix PMMA/DMI and the most suitable concentration of fillers was 1 wt. %. Among the types of fillers tested alumina particles obtained by sol-gel technique, perfomed in the best way in improving the flexural strength and modulus., Dentalni materijali imaju posebne zahteve u vezi sa ponašanjem u uslovima eksploatacije. Poli(metil metakrilat) (PMMA) predstavlja jedan od često korišćenih materijala u protetici. Od značajnog je interesa da se poboljšaju mehanička svojstva polimerne matrice dodatkom ojačanja u obliku keramičkih čestica. Pokazalo se da se dodavanjem veoma malih količina čestica u materijal dobijaju bitno poboljšana mehanička svojstva PMMA modifikovanog dodatkom dimetil itakonata (PMMMA/DMI). U okviru ovog rada ispitaće se kako utiče dodatak komercijalnih nanočestica aluminijum oksida i mikro čestica aluminijum oksida dobijenih sol-gel tehnikom na mehanička svojstva dobijenog kompozitnog materijala. Sol-gel tehnikom sintetisane su čiste aluminijum oksidne čestice i čestice dopirane gvožđe oksidom. Pripremeljeni su kompozitni materijali sa 1 mas. %, 3 mas. % i 5 mas. % čestica na bazi aluminijum oksida. Pokazano je da svi testirani punioci poboljšavaju savojna svojstva materijala u odnosu na čistu matricu PMMA/DMI i da je najpogodnija količina čestica 1 mas. %. Između svih vrsta dodatih čestica, mikro čestice aluminijum oksida dobijenih sol-gel tehnikom su pokazale najbolje vrednosti poboljšanja savojne čvrstoće i modula.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate, Uticaj oblika i veličine čestica AL2O3 na savojna svojstva PMMA kompozita modifikovanog dodatkom dimetil itakonata",
volume = "73",
number = "4",
pages = "511-516",
doi = "10.5937/tehnika1804511L"
}

Lazouzi, G. A., Vuksanović, M. M., Tomić, N. Z., Perić, T., Volkov-Husović, T. D., Spasojević, P. M.,& Jančić-Heinemann, R. M.. (2018). The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 73(4), 511-516.
https://doi.org/10.5937/tehnika1804511L

Lazouzi GA, Vuksanović MM, Tomić NZ, Perić T, Volkov-Husović TD, Spasojević PM, Jančić-Heinemann RM. The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate. in Tehnika. 2018;73(4):511-516.
doi:10.5937/tehnika1804511L .

Lazouzi, Gamal A., Vuksanović, Marija M., Tomić, Nataša Z., Perić, Tamara, Volkov-Husović, Tatjana D., Spasojević, Pavle M., Jančić-Heinemann, Radmila M., "The influence of the shape and size of the AL2O3 particles on the flexural properties of the PMMA composite modified by the addition of dimethyl itaconate" in Tehnika, 73, no. 4 (2018):511-516,
https://doi.org/10.5937/tehnika1804511L . .

TY  - JOUR
AU  - Tomić, Nataša Z.
AU  - Algellai, Ahmed A.
AU  - Vuksanović, Marija M.
AU  - Trifunović, Dejan D.
AU  - Dimitrijević, Silvana B.
AU  - Obradović-Đuričić, Kosovka
AU  - Jančić-Heinemann, Radmila M.
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2372
AB  - The subject of this study is the quantitative adhesion of a UV-curing composite film based on Bis-GMA (Bisphenol A glycidylmethacrylate) / TEGDMA (triethylene glycol dimethacrylate) as a matrix and particles doped with ferrous oxide on a metal substrate. Two different metal substrates: silver and gold-spattered brass with nickel intermediate coating were used in adhesion evaluating. Adhesion was measured using micro-identation and it was compared with the measured wetting angle of composites to the substrate. It has been shown that the substrates, although with similar mechanical properties that are reflected in very close hardness values, differ by achieved adhesive bonding with the polymer UV-cured polymer film. The addition of ceramic particles in the polymer matrix increased the adhesion of the composite film to both substrates, but the adhesion trend was dependent on the substrate type.
AB  - Predmet ovog istraživanja je kvantitativna procena adhezije između fotopolimerizujućeg kompozitnog filma na bazi Bis-GMA (Bisfenol A glicidilmetakrilata)/TEGDMA (trietilen glikol dimetakrilata) kao matrice i čestica na bazi aluminijum oksida dopiranih gvožđem na metalnoj podlozi. Korišćene su dve različite metalne podloge, jedna od srebra (u daljem tekstu 'srebro') i jedna pozlaćena mesingana pločica sa međuprevlakom od nikla (u daljem tekstu 'zlato'). Adhezija je merena korišćenjem mikroindentacije i upoređena je sa izmerenim uglom kvašenja kompozita na datim podlogama. Pokazalo se da se podloge, iako sličnih mehaničkih svojstava koje se ogledaju u veoma bliskim vrednostima tvrdoće, razlikuju po ostvarenoj adhezivnoj vezi sa polimernim fotopolimerizujućim filmom. Dodatak keramičkih čestica u polimernu matricu dodatno je povećao adheziju kompozitnog filma na obe podloge, dok je trend adhezije u zavisnosti od tipa podloge održan.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates
T1  - Ispitivanje adhezije polimernih kompozitnih filmova na bazi Bis-GMA/TEGDMA na različitim metalnim podlogama
VL  - 73
IS  - 2
SP  - 218
EP  - 222
DO  - 10.5937/tehnika1802218T
ER  - 

@article{
author = "Tomić, Nataša Z. and Algellai, Ahmed A. and Vuksanović, Marija M. and Trifunović, Dejan D. and Dimitrijević, Silvana B. and Obradović-Đuričić, Kosovka and Jančić-Heinemann, Radmila M.",
year = "2018",
abstract = "The subject of this study is the quantitative adhesion of a UV-curing composite film based on Bis-GMA (Bisphenol A glycidylmethacrylate) / TEGDMA (triethylene glycol dimethacrylate) as a matrix and particles doped with ferrous oxide on a metal substrate. Two different metal substrates: silver and gold-spattered brass with nickel intermediate coating were used in adhesion evaluating. Adhesion was measured using micro-identation and it was compared with the measured wetting angle of composites to the substrate. It has been shown that the substrates, although with similar mechanical properties that are reflected in very close hardness values, differ by achieved adhesive bonding with the polymer UV-cured polymer film. The addition of ceramic particles in the polymer matrix increased the adhesion of the composite film to both substrates, but the adhesion trend was dependent on the substrate type., Predmet ovog istraživanja je kvantitativna procena adhezije između fotopolimerizujućeg kompozitnog filma na bazi Bis-GMA (Bisfenol A glicidilmetakrilata)/TEGDMA (trietilen glikol dimetakrilata) kao matrice i čestica na bazi aluminijum oksida dopiranih gvožđem na metalnoj podlozi. Korišćene su dve različite metalne podloge, jedna od srebra (u daljem tekstu 'srebro') i jedna pozlaćena mesingana pločica sa međuprevlakom od nikla (u daljem tekstu 'zlato'). Adhezija je merena korišćenjem mikroindentacije i upoređena je sa izmerenim uglom kvašenja kompozita na datim podlogama. Pokazalo se da se podloge, iako sličnih mehaničkih svojstava koje se ogledaju u veoma bliskim vrednostima tvrdoće, razlikuju po ostvarenoj adhezivnoj vezi sa polimernim fotopolimerizujućim filmom. Dodatak keramičkih čestica u polimernu matricu dodatno je povećao adheziju kompozitnog filma na obe podloge, dok je trend adhezije u zavisnosti od tipa podloge održan.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates, Ispitivanje adhezije polimernih kompozitnih filmova na bazi Bis-GMA/TEGDMA na različitim metalnim podlogama",
volume = "73",
number = "2",
pages = "218-222",
doi = "10.5937/tehnika1802218T"
}

Tomić, N. Z., Algellai, A. A., Vuksanović, M. M., Trifunović, D. D., Dimitrijević, S. B., Obradović-Đuričić, K.,& Jančić-Heinemann, R. M.. (2018). Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 73(2), 218-222.
https://doi.org/10.5937/tehnika1802218T

Tomić NZ, Algellai AA, Vuksanović MM, Trifunović DD, Dimitrijević SB, Obradović-Đuričić K, Jančić-Heinemann RM. Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates. in Tehnika. 2018;73(2):218-222.
doi:10.5937/tehnika1802218T .

Tomić, Nataša Z., Algellai, Ahmed A., Vuksanović, Marija M., Trifunović, Dejan D., Dimitrijević, Silvana B., Obradović-Đuričić, Kosovka, Jančić-Heinemann, Radmila M., "Examination of the adhesion of polymer composite films based on Bis-GMA/TEGDMA on different metal substrates" in Tehnika, 73, no. 2 (2018):218-222,
https://doi.org/10.5937/tehnika1802218T . .

TY  - JOUR
AU  - Algellai, Ahmed A.
AU  - Vuksanović, Marija M.
AU  - Tomić, Nataša Z.
AU  - Marinković, Aleksandar D.
AU  - Obradović-Đuričić, Kosovka
AU  - Radojević, Vesna J.
AU  - Jančić-Heinemann, Radmila M.
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2297
AB  - The objective of this study is to investigate quantitative assessment of the adhesion behavior of composite films onto a metallic surface. The composite films had UV cured Bis-GMA (Bisphenol A glycidylmethacrylate)/TEGDMA (triethylene glycol dimethacrylate) as matrix and ferrous oxide doped alumina (Al2O3 Fe) particles with two surface modifications, (3-methacryloxypropyltrimethoxysilane) (MEMO) and the vinyltris(2-methoxyethoxy) silane (VTMOEO), as reinforcement. Composites were made with 0.5, 1.5 and 3 wt% of alumina particles. Adhesion was evaluated using the micro hardness testing method. The contact angle was measured and compared to the adhesive parameter from micro hardness measurements. The form of the indent on the surface of the composite film was analyzed in order to correlate the indent morphology to the adhesion quality.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - The implementation of image analysis for the visualization of adhesion assessment of a composite film
VL  - 227
SP  - 25
EP  - 28
DO  - 10.1016/j.matlet.2018.04.118
ER  - 

@article{
author = "Algellai, Ahmed A. and Vuksanović, Marija M. and Tomić, Nataša Z. and Marinković, Aleksandar D. and Obradović-Đuričić, Kosovka and Radojević, Vesna J. and Jančić-Heinemann, Radmila M.",
year = "2018",
abstract = "The objective of this study is to investigate quantitative assessment of the adhesion behavior of composite films onto a metallic surface. The composite films had UV cured Bis-GMA (Bisphenol A glycidylmethacrylate)/TEGDMA (triethylene glycol dimethacrylate) as matrix and ferrous oxide doped alumina (Al2O3 Fe) particles with two surface modifications, (3-methacryloxypropyltrimethoxysilane) (MEMO) and the vinyltris(2-methoxyethoxy) silane (VTMOEO), as reinforcement. Composites were made with 0.5, 1.5 and 3 wt% of alumina particles. Adhesion was evaluated using the micro hardness testing method. The contact angle was measured and compared to the adhesive parameter from micro hardness measurements. The form of the indent on the surface of the composite film was analyzed in order to correlate the indent morphology to the adhesion quality.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "The implementation of image analysis for the visualization of adhesion assessment of a composite film",
volume = "227",
pages = "25-28",
doi = "10.1016/j.matlet.2018.04.118"
}

Algellai, A. A., Vuksanović, M. M., Tomić, N. Z., Marinković, A. D., Obradović-Đuričić, K., Radojević, V. J.,& Jančić-Heinemann, R. M.. (2018). The implementation of image analysis for the visualization of adhesion assessment of a composite film. in Materials Letters
Elsevier Science Bv, Amsterdam., 227, 25-28.
https://doi.org/10.1016/j.matlet.2018.04.118

Algellai AA, Vuksanović MM, Tomić NZ, Marinković AD, Obradović-Đuričić K, Radojević VJ, Jančić-Heinemann RM. The implementation of image analysis for the visualization of adhesion assessment of a composite film. in Materials Letters. 2018;227:25-28.
doi:10.1016/j.matlet.2018.04.118 .

Algellai, Ahmed A., Vuksanović, Marija M., Tomić, Nataša Z., Marinković, Aleksandar D., Obradović-Đuričić, Kosovka, Radojević, Vesna J., Jančić-Heinemann, Radmila M., "The implementation of image analysis for the visualization of adhesion assessment of a composite film" in Materials Letters, 227 (2018):25-28,
https://doi.org/10.1016/j.matlet.2018.04.118 . .