TY  - JOUR
AU  - Popović, Jelena
AU  - Radenković, Goran
AU  - Gašić, Jovanka
AU  - Živković, Slavoljub
AU  - Mitić, Aleksandar
AU  - Nikolić, Marija
AU  - Barac, Radomir
PY  - 2016
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2144
AB  - The application of irrigating solutions is essential in chemomechanical treatment of tooth root canal. However, chemical and electrochemical aggressiveness of the solutions, which directly act on the instruments, may damage their surface. The aim of this study was to investigate the sensitivity of the nickel-titanium (Ni-Ti) and stainless steel endodontic files to corrosive action of the sodium hypochlorite (NaOCl), chlorhexidine gluconate (CHX) and ethylene-diamine tetraacetic acid (EDTA). Testing of sensitivity to corrosion of the instruments was performed by dynamic potentiometric method. Measurements were made in 5.25% NaOCl, 0.2% CHX and 17% EDTA. Ni-Ti instruments immersed in 5.25% NaOCl showed the most intensive corrosive changes and the lowest value of pitting potential of 1.1 V. Stainless steel instruments immersed in 5.25% NaOCl showed higher value of pitting potential of 1.5 V. Stainless steel instruments immersed in 0.2% CHX showed lower corrosive surface changes and higher value of pitting potential of 1.6 V, whereas Ni-Ti instruments immersed in 0.2% CHX showed the pitting potential of 1.9 V. The corrosion was not observed in both types of instruments after immersion in 17% EDTA. The use of 5.25% NaOCl and 0.2% CHX may cause severe surface corrosion of Ni-Ti and stainless steel endodontic files.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly / CICEQ
T1  - The examination of sensitivity to corrosion of nickel-titanium and stainless steel endodontic instruments in tooth root canal irrigating solutions
VL  - 22
IS  - 1
SP  - 95
EP  - 100
DO  - 10.2298/CICEQ150103023P
ER  - 

@article{
author = "Popović, Jelena and Radenković, Goran and Gašić, Jovanka and Živković, Slavoljub and Mitić, Aleksandar and Nikolić, Marija and Barac, Radomir",
year = "2016",
abstract = "The application of irrigating solutions is essential in chemomechanical treatment of tooth root canal. However, chemical and electrochemical aggressiveness of the solutions, which directly act on the instruments, may damage their surface. The aim of this study was to investigate the sensitivity of the nickel-titanium (Ni-Ti) and stainless steel endodontic files to corrosive action of the sodium hypochlorite (NaOCl), chlorhexidine gluconate (CHX) and ethylene-diamine tetraacetic acid (EDTA). Testing of sensitivity to corrosion of the instruments was performed by dynamic potentiometric method. Measurements were made in 5.25% NaOCl, 0.2% CHX and 17% EDTA. Ni-Ti instruments immersed in 5.25% NaOCl showed the most intensive corrosive changes and the lowest value of pitting potential of 1.1 V. Stainless steel instruments immersed in 5.25% NaOCl showed higher value of pitting potential of 1.5 V. Stainless steel instruments immersed in 0.2% CHX showed lower corrosive surface changes and higher value of pitting potential of 1.6 V, whereas Ni-Ti instruments immersed in 0.2% CHX showed the pitting potential of 1.9 V. The corrosion was not observed in both types of instruments after immersion in 17% EDTA. The use of 5.25% NaOCl and 0.2% CHX may cause severe surface corrosion of Ni-Ti and stainless steel endodontic files.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly / CICEQ",
title = "The examination of sensitivity to corrosion of nickel-titanium and stainless steel endodontic instruments in tooth root canal irrigating solutions",
volume = "22",
number = "1",
pages = "95-100",
doi = "10.2298/CICEQ150103023P"
}

Popović, J., Radenković, G., Gašić, J., Živković, S., Mitić, A., Nikolić, M.,& Barac, R.. (2016). The examination of sensitivity to corrosion of nickel-titanium and stainless steel endodontic instruments in tooth root canal irrigating solutions. in Chemical Industry & Chemical Engineering Quarterly / CICEQ
Savez hemijskih inženjera, Beograd., 22(1), 95-100.
https://doi.org/10.2298/CICEQ150103023P

Popović J, Radenković G, Gašić J, Živković S, Mitić A, Nikolić M, Barac R. The examination of sensitivity to corrosion of nickel-titanium and stainless steel endodontic instruments in tooth root canal irrigating solutions. in Chemical Industry & Chemical Engineering Quarterly / CICEQ. 2016;22(1):95-100.
doi:10.2298/CICEQ150103023P .

Popović, Jelena, Radenković, Goran, Gašić, Jovanka, Živković, Slavoljub, Mitić, Aleksandar, Nikolić, Marija, Barac, Radomir, "The examination of sensitivity to corrosion of nickel-titanium and stainless steel endodontic instruments in tooth root canal irrigating solutions" in Chemical Industry & Chemical Engineering Quarterly / CICEQ, 22, no. 1 (2016):95-100,
https://doi.org/10.2298/CICEQ150103023P . .

TY  - JOUR
AU  - Popović, Jelena
AU  - Gašić, Jovanka
AU  - Živković, Slavoljub
AU  - Kesić, Ljiljana
AU  - Mitić, Aleksandar
AU  - Nikolić, Marija
AU  - Milašin, Jelena
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2007
AB  - Objective: The aim of this study was to investigate the presence of human cytomegalovirus (HCMV) and Epstein-Barr virus (EBV) in the tissue of chronic periapical lesions, and to compare the results in relation to the symptoms of patients and the size of the lesion. Methods: Periapical lesions analyzed in the study were collected from the roots of the teeth indicated for extraction. Samples were divided according to the symptoms into groups of symptomatic and asymptomatic, and according the size into groups of small and large lesions. Polymerase chain reaction was used to detect HCMV and EBV. The amplification was performed in a DNA Thermal Cycler (Hybaid). Results: Symptomatic lesions were 7.68 times more likely to be infected with HCMV than asymptomatic lesions (p  lt  0.001). Large symptomatic lesions were 73.50 times more likely to harbor HCMV than small symptomatic lesions (p  lt  0.001). Large symptomatic lesions were 7.64 times more likely to be infected with EBV than small symptomatic lesions (p = 0.05). Large symptomatic lesions were 5.38 times more likely to harbor dual HCMV/EBV infection than small symptomatic lesions (p = 0.115). Conclusion: Detection of HCMV and EBV in the samples of periapical lesions suggests an important role of herpesviruses in periapical tissue destruction.
PB  - Karger, Basel
T2  - Intervirology
T1  - Prevalence of Human Cytomegalovirus and Epstein-Barr Virus in Chronic Periapical Lesions
VL  - 58
IS  - 5
SP  - 271
EP  - 277
DO  - 10.1159/000441208
ER  - 

@article{
author = "Popović, Jelena and Gašić, Jovanka and Živković, Slavoljub and Kesić, Ljiljana and Mitić, Aleksandar and Nikolić, Marija and Milašin, Jelena",
year = "2015",
abstract = "Objective: The aim of this study was to investigate the presence of human cytomegalovirus (HCMV) and Epstein-Barr virus (EBV) in the tissue of chronic periapical lesions, and to compare the results in relation to the symptoms of patients and the size of the lesion. Methods: Periapical lesions analyzed in the study were collected from the roots of the teeth indicated for extraction. Samples were divided according to the symptoms into groups of symptomatic and asymptomatic, and according the size into groups of small and large lesions. Polymerase chain reaction was used to detect HCMV and EBV. The amplification was performed in a DNA Thermal Cycler (Hybaid). Results: Symptomatic lesions were 7.68 times more likely to be infected with HCMV than asymptomatic lesions (p  lt  0.001). Large symptomatic lesions were 73.50 times more likely to harbor HCMV than small symptomatic lesions (p  lt  0.001). Large symptomatic lesions were 7.64 times more likely to be infected with EBV than small symptomatic lesions (p = 0.05). Large symptomatic lesions were 5.38 times more likely to harbor dual HCMV/EBV infection than small symptomatic lesions (p = 0.115). Conclusion: Detection of HCMV and EBV in the samples of periapical lesions suggests an important role of herpesviruses in periapical tissue destruction.",
publisher = "Karger, Basel",
journal = "Intervirology",
title = "Prevalence of Human Cytomegalovirus and Epstein-Barr Virus in Chronic Periapical Lesions",
volume = "58",
number = "5",
pages = "271-277",
doi = "10.1159/000441208"
}

Popović, J., Gašić, J., Živković, S., Kesić, L., Mitić, A., Nikolić, M.,& Milašin, J.. (2015). Prevalence of Human Cytomegalovirus and Epstein-Barr Virus in Chronic Periapical Lesions. in Intervirology
Karger, Basel., 58(5), 271-277.
https://doi.org/10.1159/000441208

Popović J, Gašić J, Živković S, Kesić L, Mitić A, Nikolić M, Milašin J. Prevalence of Human Cytomegalovirus and Epstein-Barr Virus in Chronic Periapical Lesions. in Intervirology. 2015;58(5):271-277.
doi:10.1159/000441208 .

Popović, Jelena, Gašić, Jovanka, Živković, Slavoljub, Kesić, Ljiljana, Mitić, Aleksandar, Nikolić, Marija, Milašin, Jelena, "Prevalence of Human Cytomegalovirus and Epstein-Barr Virus in Chronic Periapical Lesions" in Intervirology, 58, no. 5 (2015):271-277,
https://doi.org/10.1159/000441208 . .

TY  - JOUR
AU  - Gašić, Jovanka
AU  - Popović, Jelena
AU  - Živković, Slavoljub
AU  - Petrović, Aleksandar
AU  - Barac, Radomir
AU  - Nikolić, Marija
PY  - 2012
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1764
AB  - To determine whether sodium hypochlorite (NaOCl) with 0.2% chlorhexidine gluconate (CHX) leads to colour change and precipitate formation, and to ultrastructurally analyse the dentine surface after simultaneous irrigation with 0.5% NaOCl and 0.2% CHX. Four tubes in which 5ml of different NaOCl concentrations and 5ml 0,2% CHX were placed, were observed every 15 minutes in the first two hours and after 7 days. Mixture solutions were centrifuged at 800 rpm/4 min. A precipitate is observed under light-microscopy. Thirty-five single-rooted teeth were instrumented using crown-down technique with irrigation: Positive control: distilled water, Negative control: 0,5% NaOCl+15% EDTA, Experimental group: identical to the negative control, then canals were treated with 0.5% NaOCl+0.2% CHX. The longitudinal root sections were observed under scanning-electron-microscopy. The amount of debris was assessed with 5/score-system, and the results were analysed using the Mann-Whitney U test (p  lt  0.001). Change in colour was noticed immediately after the merger and it did not change with time. Mixture solutions showed considerable turbidity, but precipitate was observed only after centrifugation. Statistical analysis showed a significant difference in the dentinal wall purity when comparing the cervical and middle root canal thirds between the experimental and negative control group. The difference was also observed between the cervical and middle thirds compared to the apical third of the root canal within these groups. Interaction between NaOCl and CHX, as well as the creation of precipitates, depends not only on the concentration of NaOCl, but also on the concentration of CHX. Microsc. Res. Tech. 75:10991103, 2012.
PB  - Wiley, Hoboken
T2  - Microscopy Research & Technique
T1  - Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate
VL  - 75
IS  - 8
SP  - 1099
EP  - 1103
DO  - 10.1002/jemt.22036
ER  - 

@article{
author = "Gašić, Jovanka and Popović, Jelena and Živković, Slavoljub and Petrović, Aleksandar and Barac, Radomir and Nikolić, Marija",
year = "2012",
abstract = "To determine whether sodium hypochlorite (NaOCl) with 0.2% chlorhexidine gluconate (CHX) leads to colour change and precipitate formation, and to ultrastructurally analyse the dentine surface after simultaneous irrigation with 0.5% NaOCl and 0.2% CHX. Four tubes in which 5ml of different NaOCl concentrations and 5ml 0,2% CHX were placed, were observed every 15 minutes in the first two hours and after 7 days. Mixture solutions were centrifuged at 800 rpm/4 min. A precipitate is observed under light-microscopy. Thirty-five single-rooted teeth were instrumented using crown-down technique with irrigation: Positive control: distilled water, Negative control: 0,5% NaOCl+15% EDTA, Experimental group: identical to the negative control, then canals were treated with 0.5% NaOCl+0.2% CHX. The longitudinal root sections were observed under scanning-electron-microscopy. The amount of debris was assessed with 5/score-system, and the results were analysed using the Mann-Whitney U test (p  lt  0.001). Change in colour was noticed immediately after the merger and it did not change with time. Mixture solutions showed considerable turbidity, but precipitate was observed only after centrifugation. Statistical analysis showed a significant difference in the dentinal wall purity when comparing the cervical and middle root canal thirds between the experimental and negative control group. The difference was also observed between the cervical and middle thirds compared to the apical third of the root canal within these groups. Interaction between NaOCl and CHX, as well as the creation of precipitates, depends not only on the concentration of NaOCl, but also on the concentration of CHX. Microsc. Res. Tech. 75:10991103, 2012.",
publisher = "Wiley, Hoboken",
journal = "Microscopy Research & Technique",
title = "Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate",
volume = "75",
number = "8",
pages = "1099-1103",
doi = "10.1002/jemt.22036"
}

Gašić, J., Popović, J., Živković, S., Petrović, A., Barac, R.,& Nikolić, M.. (2012). Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate. in Microscopy Research & Technique
Wiley, Hoboken., 75(8), 1099-1103.
https://doi.org/10.1002/jemt.22036

Gašić J, Popović J, Živković S, Petrović A, Barac R, Nikolić M. Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate. in Microscopy Research & Technique. 2012;75(8):1099-1103.
doi:10.1002/jemt.22036 .

Gašić, Jovanka, Popović, Jelena, Živković, Slavoljub, Petrović, Aleksandar, Barac, Radomir, Nikolić, Marija, "Ultrastructural analysis of the root canal walls after simultaneous irrigation of different sodium hypochlorite concentration and 0.2% chlorhexidine gluconate" in Microscopy Research & Technique, 75, no. 8 (2012):1099-1103,
https://doi.org/10.1002/jemt.22036 . .