TY  - JOUR
AU  - Marjanović, Jovana
AU  - Veljović, Đorđe
AU  - Stasić, Jovana
AU  - Savić-Stanković, Tatjana
AU  - Trifković, Branka
AU  - Miletić, Vesna
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3999
AB  - Objectives. To evaluate optical properties (color and translucency) of 'sandwich' restorations of resin-based composites and esthetically unfavorable dentin restoratives. Methods. Cylindrical 'dentin' specimens (8 mm in diameter and 2 mm thick, N = 5/group) were prepared using EverX Posterior (GC), Biodentine (Septodont), experimental hydroxyapatite (HAP) or conventional composites (Gradia Direct Posterior, GC; Filtek Z250 and Filtek Z500, 3M ESPE). Capping 'enamel' layers were prepared using composites (Gradia Direct Posterior, Filtek Z250 or Z550) of Al or A3 shade and the following thickness: 0.6, 1 or 2 mm. Color (Delta E) and translucency parameter (TP) were determined using a spectrophotometer (VITA Easyshade Advance 4.0, VITA Zahnfabrik). Data were statistically analyzed using analysis of variance with Tukey's post-hoc tests (alpha = 0.05). Results. TP was greatly affected by layer thickness, whilst Delta E depended on shade and layer thickness of the capping composite. HAP and Biodentine showed significantly lower TP and higher Delta E (deviation from 'ideal white') than composites (p  lt  0.05). Greater TP was seen in EverX_composite groups than in corresponding control groups of the same shade and thickness. TP of composites combined with Biodentine or HAP was below 2, lower than the corresponding control groups (p  lt  0.05). Within-group differences of Delta E were greatest in HAP_composite groups. EverX_Gradia and EverX_FiltekZ250 combinations showed the most comparable Delta E with the control groups. Significance. A 2 mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dental Materials
T1  - Optical properties of composite restorations influenced by dissimilar dentin restoratives
EP  - 745
IS  - 5
SP  - 737
VL  - 34
DO  - 10.1016/j.dental.2018.01.017
ER  - 

@article{
author = "Marjanović, Jovana and Veljović, Đorđe and Stasić, Jovana and Savić-Stanković, Tatjana and Trifković, Branka and Miletić, Vesna",
year = "2018",
abstract = "Objectives. To evaluate optical properties (color and translucency) of 'sandwich' restorations of resin-based composites and esthetically unfavorable dentin restoratives. Methods. Cylindrical 'dentin' specimens (8 mm in diameter and 2 mm thick, N = 5/group) were prepared using EverX Posterior (GC), Biodentine (Septodont), experimental hydroxyapatite (HAP) or conventional composites (Gradia Direct Posterior, GC; Filtek Z250 and Filtek Z500, 3M ESPE). Capping 'enamel' layers were prepared using composites (Gradia Direct Posterior, Filtek Z250 or Z550) of Al or A3 shade and the following thickness: 0.6, 1 or 2 mm. Color (Delta E) and translucency parameter (TP) were determined using a spectrophotometer (VITA Easyshade Advance 4.0, VITA Zahnfabrik). Data were statistically analyzed using analysis of variance with Tukey's post-hoc tests (alpha = 0.05). Results. TP was greatly affected by layer thickness, whilst Delta E depended on shade and layer thickness of the capping composite. HAP and Biodentine showed significantly lower TP and higher Delta E (deviation from 'ideal white') than composites (p  lt  0.05). Greater TP was seen in EverX_composite groups than in corresponding control groups of the same shade and thickness. TP of composites combined with Biodentine or HAP was below 2, lower than the corresponding control groups (p  lt  0.05). Within-group differences of Delta E were greatest in HAP_composite groups. EverX_Gradia and EverX_FiltekZ250 combinations showed the most comparable Delta E with the control groups. Significance. A 2 mm thick layer of composite covering dentin restoratives with unfavorable esthetics is recommended for a final 'sandwich' restoration that is esthetically comparable to a conventional, mono-composite control restoration.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dental Materials",
title = "Optical properties of composite restorations influenced by dissimilar dentin restoratives",
pages = "745-737",
number = "5",
volume = "34",
doi = "10.1016/j.dental.2018.01.017"
}

Marjanović, J., Veljović, Đ., Stasić, J., Savić-Stanković, T., Trifković, B.,& Miletić, V.. (2018). Optical properties of composite restorations influenced by dissimilar dentin restoratives. in Dental Materials
Elsevier Sci Ltd, Oxford., 34(5), 737-745.
https://doi.org/10.1016/j.dental.2018.01.017

Marjanović J, Veljović Đ, Stasić J, Savić-Stanković T, Trifković B, Miletić V. Optical properties of composite restorations influenced by dissimilar dentin restoratives. in Dental Materials. 2018;34(5):737-745.
doi:10.1016/j.dental.2018.01.017 .

Marjanović, Jovana, Veljović, Đorđe, Stasić, Jovana, Savić-Stanković, Tatjana, Trifković, Branka, Miletić, Vesna, "Optical properties of composite restorations influenced by dissimilar dentin restoratives" in Dental Materials, 34, no. 5 (2018):737-745,
https://doi.org/10.1016/j.dental.2018.01.017 . .

TY  - JOUR
AU  - Trifković, Branka
AU  - Todorović, Aleksandar
AU  - Lazić, Vojkan
AU  - Draganjac, Miroslav
AU  - Mirković, Nemanja
AU  - Jokić, Bojan
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5632
AB  - Background/Aim. One of the results of many years of Cerec® 3D CAD/CAM system technological development is implementation of one intraoral and two extraoral optical scanning methods which, depending on the current indications, are applied in making fixed restorations. The aim of this study was to determine the degree of precision of optical scanning methods by the use of the Cerec®3D CAD/CAM system in the process of making ceramic inlays. Methods. The study was conducted in three experimental groups of inlays prepared using the procedure of three methods of scanning Cerec ®3D system. Ceramic inlays made by conventional methodology were the control group. The accuracy of optical scanning methods of the Cerec®3D system computer aided designcomputer aided manufacturing (CAD/CAM) was indirectly examined by measuring a marginal gap size between inlays and demarcation preparation by scanning electron microscope (SEM). Results. The results of the study showed a difference in the accuracy of the existing methods of scanning dental CAD/CAM systems. The highest level of accuracy was achieved by the extraoral optical superficial scanning technique. The value of marginal gap size inlays made with the technique of extraoral optical superficial scanning was 32.97 ± 13.17 μ. Techniques of intraoral optical superficial and extraoral point laser scanning showed a lower level of accuracy (40.29 ± 21.46 μ for inlays of intraoral optical superficial scanning and 99.67 ± 37.25 μ for inlays of extraoral point laser scanning). Conclusion. Optical scanning methods in dental CAM/CAM technologies are precise methods of digitizing the spatial models; application of extraoral optical scanning methods provides the hightest precision.
AB  - Uvod/Cilj. Jedan od rezultata dugogodišnjeg tehnološkog usavršavanja Cerec®3D sistema jeste implementacija jednog intraoralnog i dva ekstraoralna metoda optičkog skeniranja koji se, u zavisnosti od postojeće indikacije, primenjuju u izradi fiksnih nadoknada. Cilj rada bio je da se utvrdi stepen preciznosti optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja. Metode. Ispitivanje je sprovedeno u okviru tri eksperimentalne grupe inleja u čijoj izradi su primenjena tri postupka skeniranja Cerec®3D sistema. Keramički inleji izrađeni konvencionalnom metodologijom predstavljali su kontrolnu grupu. Preciznost optičkih metoda skeniranja Cerec®3D sistema ispitivana je indirektno, merenjem veličine rubnog zaptivanja između inleja i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa (SEM). Rezultati. Istraživanjem je ustanovljeno da postoji razlika u preciznosti postojećih metoda skeniranja stomatoloških Computer aided design-computer aided manufacturing (CAD/CAM) tehnologija. Najviši stepen preciznosti pokazala je tehnika optičkog ekstraoralnog površinskog skeniranja. Vrednost rubnog zaptivanja inleja izrađenih primenom ove tehnike iznosila je 32,97 ± 13,17 μ. Tehnike intraoralnog optičkog površinskog i ekstraoralnog tačkastog skeniranja pokazuju niži nivo preciznosti (40,29 ± 21,46 μ za inleje intraoralnog optičkog površinskog i 99,67 ± 37,25 μ za inleje ekstraoralnog tačkastog skeniranja). Zaključak. Optičke metode skeniranja u stomatološkim CAD/CAM tehnologijama predstavljaju precizne metode prostorne digitalizacije modela; pri tom, najveću preciznost pruža primena ekstraoralnih optičkih metoda skeniranja.
PB  - Vojnomedicinska akademija - Institut za naučne informacije, Beograd
T2  - Vojnosanitetski pregled
T1  - Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays
T1  - Preciznost optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja
EP  - 818
IS  - 10
SP  - 812
VL  - 67
DO  - 10.2298/VSP1010812T
ER  - 

@article{
author = "Trifković, Branka and Todorović, Aleksandar and Lazić, Vojkan and Draganjac, Miroslav and Mirković, Nemanja and Jokić, Bojan",
year = "2010",
abstract = "Background/Aim. One of the results of many years of Cerec® 3D CAD/CAM system technological development is implementation of one intraoral and two extraoral optical scanning methods which, depending on the current indications, are applied in making fixed restorations. The aim of this study was to determine the degree of precision of optical scanning methods by the use of the Cerec®3D CAD/CAM system in the process of making ceramic inlays. Methods. The study was conducted in three experimental groups of inlays prepared using the procedure of three methods of scanning Cerec ®3D system. Ceramic inlays made by conventional methodology were the control group. The accuracy of optical scanning methods of the Cerec®3D system computer aided designcomputer aided manufacturing (CAD/CAM) was indirectly examined by measuring a marginal gap size between inlays and demarcation preparation by scanning electron microscope (SEM). Results. The results of the study showed a difference in the accuracy of the existing methods of scanning dental CAD/CAM systems. The highest level of accuracy was achieved by the extraoral optical superficial scanning technique. The value of marginal gap size inlays made with the technique of extraoral optical superficial scanning was 32.97 ± 13.17 μ. Techniques of intraoral optical superficial and extraoral point laser scanning showed a lower level of accuracy (40.29 ± 21.46 μ for inlays of intraoral optical superficial scanning and 99.67 ± 37.25 μ for inlays of extraoral point laser scanning). Conclusion. Optical scanning methods in dental CAM/CAM technologies are precise methods of digitizing the spatial models; application of extraoral optical scanning methods provides the hightest precision., Uvod/Cilj. Jedan od rezultata dugogodišnjeg tehnološkog usavršavanja Cerec®3D sistema jeste implementacija jednog intraoralnog i dva ekstraoralna metoda optičkog skeniranja koji se, u zavisnosti od postojeće indikacije, primenjuju u izradi fiksnih nadoknada. Cilj rada bio je da se utvrdi stepen preciznosti optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja. Metode. Ispitivanje je sprovedeno u okviru tri eksperimentalne grupe inleja u čijoj izradi su primenjena tri postupka skeniranja Cerec®3D sistema. Keramički inleji izrađeni konvencionalnom metodologijom predstavljali su kontrolnu grupu. Preciznost optičkih metoda skeniranja Cerec®3D sistema ispitivana je indirektno, merenjem veličine rubnog zaptivanja između inleja i demarkacije preparacije pomoću skenirajućeg elektronskog mikroskopa (SEM). Rezultati. Istraživanjem je ustanovljeno da postoji razlika u preciznosti postojećih metoda skeniranja stomatoloških Computer aided design-computer aided manufacturing (CAD/CAM) tehnologija. Najviši stepen preciznosti pokazala je tehnika optičkog ekstraoralnog površinskog skeniranja. Vrednost rubnog zaptivanja inleja izrađenih primenom ove tehnike iznosila je 32,97 ± 13,17 μ. Tehnike intraoralnog optičkog površinskog i ekstraoralnog tačkastog skeniranja pokazuju niži nivo preciznosti (40,29 ± 21,46 μ za inleje intraoralnog optičkog površinskog i 99,67 ± 37,25 μ za inleje ekstraoralnog tačkastog skeniranja). Zaključak. Optičke metode skeniranja u stomatološkim CAD/CAM tehnologijama predstavljaju precizne metode prostorne digitalizacije modela; pri tom, najveću preciznost pruža primena ekstraoralnih optičkih metoda skeniranja.",
publisher = "Vojnomedicinska akademija - Institut za naučne informacije, Beograd",
journal = "Vojnosanitetski pregled",
title = "Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays, Preciznost optičkih metoda skeniranja Cerec®3D sistema u postupku izrade keramičkih inleja",
pages = "818-812",
number = "10",
volume = "67",
doi = "10.2298/VSP1010812T"
}

Trifković, B., Todorović, A., Lazić, V., Draganjac, M., Mirković, N.,& Jokić, B.. (2010). Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays. in Vojnosanitetski pregled
Vojnomedicinska akademija - Institut za naučne informacije, Beograd., 67(10), 812-818.
https://doi.org/10.2298/VSP1010812T

Trifković B, Todorović A, Lazić V, Draganjac M, Mirković N, Jokić B. Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays. in Vojnosanitetski pregled. 2010;67(10):812-818.
doi:10.2298/VSP1010812T .

Trifković, Branka, Todorović, Aleksandar, Lazić, Vojkan, Draganjac, Miroslav, Mirković, Nemanja, Jokić, Bojan, "Accuracy of optical scanning methods of the Cerec®3D system in the process of making ceramic inlays" in Vojnosanitetski pregled, 67, no. 10 (2010):812-818,
https://doi.org/10.2298/VSP1010812T . .