TY  - JOUR
AU  - Vulović, Stefan
AU  - Todorović, Aleksandar
AU  - Stančić, Ivica
AU  - Popovac, Aleksandra
AU  - Stašić, Jovana N.
AU  - Vencl, Aleksandar
AU  - Milić-Lemić, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4288
AB  - To determine if there are any differences in surface characteristics (surface roughness and contact angle) among different CAD/CAM materials indicated for fabricating implant-supported restorations, following all the material preparation protocols provided by the manufacturer. One-hundred forty-four specimens were divided into six groups: RBC (resin-based composite), PMMA (polymethyl methacrylate), PEEK (polyether ether ketone), ZP (zirconia polished), ZG (zirconia glazed) and CoCr4 (CoCr4 alloy). The experimental part included surface roughness (SR) and contact angle of water (WCA) analyses, fulfilled with atomic force microscopy (AFM) and scanning electron microscopy (SEM) view of surface topography. The data were analyzed using Kruskal-Wallis test with a Dunn's post hoc analysis, the correlation between measurements was tested using Spearman's rank correlation coefficient and all data were presented as mean ± SD. ZG specimens were significantly rougher compared to other groups (p ≤ 0.05). The WCA measurements revealed significantly lower mean values in ZG group (p ≤ 0.05), contrary to PEEK and CoCr4, where significantly higher mean values were observed, compared to other groups (p ≤ 0.05). There exist a moderate negative correlation between the SR and WCA (ρ =  0.41). AFM 3D and SEM 2D images presented more or less heterogeneous surface of all materials. There were statistically significant differences in surface roughness and contact angle among tested material groups. Moderate negative correlation was found between surface roughness and contact angle of tested material groups. The study gives us a better understanding of influence of physicochemical characteristics of investigated materials on their surface properties and provides useful knowledge for future researches in a view of material's behavior under in vivo conditions, when it comes to a question of features related to surface quality, such as microbial adhesion, corrosion, wear, biocompatibility and esthetics.
PB  - Wiley
T2  - Journal of Esthetic and Restorative Dentistry
T1  - Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations
EP  - 1141
IS  - 7
SP  - 1132
VL  - 34
DO  - 10.1111/jerd.12958
ER  - 

@article{
author = "Vulović, Stefan and Todorović, Aleksandar and Stančić, Ivica and Popovac, Aleksandra and Stašić, Jovana N. and Vencl, Aleksandar and Milić-Lemić, Aleksandra",
year = "2022",
abstract = "To determine if there are any differences in surface characteristics (surface roughness and contact angle) among different CAD/CAM materials indicated for fabricating implant-supported restorations, following all the material preparation protocols provided by the manufacturer. One-hundred forty-four specimens were divided into six groups: RBC (resin-based composite), PMMA (polymethyl methacrylate), PEEK (polyether ether ketone), ZP (zirconia polished), ZG (zirconia glazed) and CoCr4 (CoCr4 alloy). The experimental part included surface roughness (SR) and contact angle of water (WCA) analyses, fulfilled with atomic force microscopy (AFM) and scanning electron microscopy (SEM) view of surface topography. The data were analyzed using Kruskal-Wallis test with a Dunn's post hoc analysis, the correlation between measurements was tested using Spearman's rank correlation coefficient and all data were presented as mean ± SD. ZG specimens were significantly rougher compared to other groups (p ≤ 0.05). The WCA measurements revealed significantly lower mean values in ZG group (p ≤ 0.05), contrary to PEEK and CoCr4, where significantly higher mean values were observed, compared to other groups (p ≤ 0.05). There exist a moderate negative correlation between the SR and WCA (ρ =  0.41). AFM 3D and SEM 2D images presented more or less heterogeneous surface of all materials. There were statistically significant differences in surface roughness and contact angle among tested material groups. Moderate negative correlation was found between surface roughness and contact angle of tested material groups. The study gives us a better understanding of influence of physicochemical characteristics of investigated materials on their surface properties and provides useful knowledge for future researches in a view of material's behavior under in vivo conditions, when it comes to a question of features related to surface quality, such as microbial adhesion, corrosion, wear, biocompatibility and esthetics.",
publisher = "Wiley",
journal = "Journal of Esthetic and Restorative Dentistry",
title = "Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations",
pages = "1141-1132",
number = "7",
volume = "34",
doi = "10.1111/jerd.12958"
}

Vulović, S., Todorović, A., Stančić, I., Popovac, A., Stašić, J. N., Vencl, A.,& Milić-Lemić, A.. (2022). Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations. in Journal of Esthetic and Restorative Dentistry
Wiley., 34(7), 1132-1141.
https://doi.org/10.1111/jerd.12958

Vulović S, Todorović A, Stančić I, Popovac A, Stašić JN, Vencl A, Milić-Lemić A. Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations. in Journal of Esthetic and Restorative Dentistry. 2022;34(7):1132-1141.
doi:10.1111/jerd.12958 .

Vulović, Stefan, Todorović, Aleksandar, Stančić, Ivica, Popovac, Aleksandra, Stašić, Jovana N., Vencl, Aleksandar, Milić-Lemić, Aleksandra, "Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations" in Journal of Esthetic and Restorative Dentistry, 34, no. 7 (2022):1132-1141,
https://doi.org/10.1111/jerd.12958 . .

TY  - PAT
AU  - Miletić, Vesna
AU  - Petrović, Violeta
AU  - Stašić, Jovana
AU  - Mitrović, Nenad
AU  - Milovanović, Aleksa
AU  - Milošević, Miloš
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7199
AB  - Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima pripada oblasti merenja, a odnosi se na merenje sile i pomeranja koje se javlja u toku ispitivanja uzorka. Prednost Uređaja (A) je integracija više metoda ispitivanja materijala korišćenjem modularnih alata za ispitivanje na zatezanje, smicanje, savijanje u tri tačke i probijanje. Modularni alati se za Uređaj (A) montiraju pomoću dva otvora sa navojem na podlozi (14)-za koji se vezuje nepomični deo alata, i rupe sa navojem u dinamometru (9)-sa kojeg se prenosi kretanje na pokretni deo alata.
Kretanje se zadaje pomoću linearnog aktuatora (1), koji obrtno kretanje servo motora pretvara u linearno kretanje klipa (4), koji pokreće traverzu (7), koja dalje predaje kretanje dinamometru (9). Vrednosti sile i pomeranja tokom ispitivanja prikazuju se na displeju dinamometra (9) i električnog pomičnog merila (10), respektivno. Vrednosti sile i pomeranja u odnosu na dimenzije izabrane epruvete iz standarda ISO/TS 11405:2003 (E), omogućavaju dobijanje vrednosti napona i deformacija ispitivanog materijala.
PB  - Zavod za intelektualnu svojinu Republike Srbije
T2  - Zavod za intelektualnu svojinu Republike Srbije
T1  - Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima
EP  - 12
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7199
ER  - 

@misc{
author = "Miletić, Vesna and Petrović, Violeta and Stašić, Jovana and Mitrović, Nenad and Milovanović, Aleksa and Milošević, Miloš",
year = "2020",
abstract = "Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima pripada oblasti merenja, a odnosi se na merenje sile i pomeranja koje se javlja u toku ispitivanja uzorka. Prednost Uređaja (A) je integracija više metoda ispitivanja materijala korišćenjem modularnih alata za ispitivanje na zatezanje, smicanje, savijanje u tri tačke i probijanje. Modularni alati se za Uređaj (A) montiraju pomoću dva otvora sa navojem na podlozi (14)-za koji se vezuje nepomični deo alata, i rupe sa navojem u dinamometru (9)-sa kojeg se prenosi kretanje na pokretni deo alata.
Kretanje se zadaje pomoću linearnog aktuatora (1), koji obrtno kretanje servo motora pretvara u linearno kretanje klipa (4), koji pokreće traverzu (7), koja dalje predaje kretanje dinamometru (9). Vrednosti sile i pomeranja tokom ispitivanja prikazuju se na displeju dinamometra (9) i električnog pomičnog merila (10), respektivno. Vrednosti sile i pomeranja u odnosu na dimenzije izabrane epruvete iz standarda ISO/TS 11405:2003 (E), omogućavaju dobijanje vrednosti napona i deformacija ispitivanog materijala.",
publisher = "Zavod za intelektualnu svojinu Republike Srbije",
journal = "Zavod za intelektualnu svojinu Republike Srbije",
title = "Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima",
pages = "12-1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7199"
}

Miletić, V., Petrović, V., Stašić, J., Mitrović, N., Milovanović, A.,& Milošević, M.. (2020). Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima. in Zavod za intelektualnu svojinu Republike Srbije
Zavod za intelektualnu svojinu Republike Srbije., 1-12.
https://hdl.handle.net/21.15107/rcub_machinery_7199

Miletić V, Petrović V, Stašić J, Mitrović N, Milovanović A, Milošević M. Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima. in Zavod za intelektualnu svojinu Republike Srbije. 2020;:1-12.
https://hdl.handle.net/21.15107/rcub_machinery_7199 .

Miletić, Vesna, Petrović, Violeta, Stašić, Jovana, Mitrović, Nenad, Milovanović, Aleksa, Milošević, Miloš, "Uređaj za određivanje mikro-mehaničkih svojstava stomatoloških materijala sa modularnim alatima" in Zavod za intelektualnu svojinu Republike Srbije (2020):1-12,
https://hdl.handle.net/21.15107/rcub_machinery_7199 .