TY  - JOUR
AU  - Vlatkovic Jakovljević, Ivana
AU  - Todorović, Aleksandar
AU  - Budak, Igor
AU  - Sokac, Mario
AU  - Miličić, Biljana
AU  - Špadijer-Gostović, Aleksandra
PY  - 2020
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2516
AB  - The purpose of the study was to test new method for in vitro evaluation of dental material wear with 3D digitization procedure. Thirty dental crowns, made of polyetheretherketone and veneered with composite material, were subjected to wear test. The crown surface was digitized using coordinate measuring machine before and after the performed wear test. Mesh 3D models were reconstructed and average and maximum depth of lost material and volume loss was calculated (GOM Inspect 2016 software). Mean average depth value amounted 12 7 gm, maximum depth value was 42 gm, while mean volume loss was 0.0024 mm(3). The smallest measured values were 4 gm for depth value and 0.0003 mm(3) for volume loss. Coefficient of variation was very high for all tested parameters (>50%) as a result of data inconsistency. Within the limitations of applied methodology, the possibility of using coordinate measuring machine in measurement of dental material wear was confirmed.
PB  - Japanese Soc Dental Materials Devices, Tokyo
T2  - Dental Materials Journal
T1  - Measurement of dental crown wear-In vitro study
VL  - 39
IS  - 1
SP  - 126
EP  - 134
DO  - 10.4012/dmj.2018-280
ER  - 

@article{
author = "Vlatkovic Jakovljević, Ivana and Todorović, Aleksandar and Budak, Igor and Sokac, Mario and Miličić, Biljana and Špadijer-Gostović, Aleksandra",
year = "2020",
abstract = "The purpose of the study was to test new method for in vitro evaluation of dental material wear with 3D digitization procedure. Thirty dental crowns, made of polyetheretherketone and veneered with composite material, were subjected to wear test. The crown surface was digitized using coordinate measuring machine before and after the performed wear test. Mesh 3D models were reconstructed and average and maximum depth of lost material and volume loss was calculated (GOM Inspect 2016 software). Mean average depth value amounted 12 7 gm, maximum depth value was 42 gm, while mean volume loss was 0.0024 mm(3). The smallest measured values were 4 gm for depth value and 0.0003 mm(3) for volume loss. Coefficient of variation was very high for all tested parameters (>50%) as a result of data inconsistency. Within the limitations of applied methodology, the possibility of using coordinate measuring machine in measurement of dental material wear was confirmed.",
publisher = "Japanese Soc Dental Materials Devices, Tokyo",
journal = "Dental Materials Journal",
title = "Measurement of dental crown wear-In vitro study",
volume = "39",
number = "1",
pages = "126-134",
doi = "10.4012/dmj.2018-280"
}

Vlatkovic Jakovljević, I., Todorović, A., Budak, I., Sokac, M., Miličić, B.,& Špadijer-Gostović, A.. (2020). Measurement of dental crown wear-In vitro study. in Dental Materials Journal
Japanese Soc Dental Materials Devices, Tokyo., 39(1), 126-134.
https://doi.org/10.4012/dmj.2018-280

Vlatkovic Jakovljević I, Todorović A, Budak I, Sokac M, Miličić B, Špadijer-Gostović A. Measurement of dental crown wear-In vitro study. in Dental Materials Journal. 2020;39(1):126-134.
doi:10.4012/dmj.2018-280 .

Vlatkovic Jakovljević, Ivana, Todorović, Aleksandar, Budak, Igor, Sokac, Mario, Miličić, Biljana, Špadijer-Gostović, Aleksandra, "Measurement of dental crown wear-In vitro study" in Dental Materials Journal, 39, no. 1 (2020):126-134,
https://doi.org/10.4012/dmj.2018-280 . .

TY  - JOUR
AU  - Santoši, Željko
AU  - Budak, Igor
AU  - Sokac, Mario
AU  - Puškar, Tatjana
AU  - Vukelić, Đorđe
AU  - Trifković, Branka
PY  - 2018
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2270
AB  - Development and improvement of 3D digitizing systems provide for the ability to digitize a growing number of materials and geometrical forms of greater complexity. This paper presents the application of 3D digitizing system using close range photogrammetry on the upper jaw cast in plaster in order to obtain its 3D model. Because of the low visual characteristics of gypsum, such as color and texture, many questions arise about the possibility of applying this particular method to this type of physical models. In order to overcome bad visual properties of gypsum, this paper analyzes the possibility of the photogrammetry method application supported by the projected light texture which is based on patterns in the form of noise-obtained mathematically modeled functions. In order to determine the selected image for light texture which gives the better results, an experiment was designed and carried out. Only two images were tested. One image is selected based on previous research and the other one was generated by the Matlab function for uniformly distributed random numbers. For validation and a comparative analysis of the results, an object of 3D digitization was generated with and without projected light texture. CAD inspection was applied for the analysis of the obtained 3D digitizing results. 3D model obtained by approved professional optical 3D scanner as a reference was used. The results in this paper confirm better accuracy of 3D models obtained with the use of light textures, but this approach requires additional hardware and setup adjustment for images acquisition.
PB  - Univerzitet u Nišu, Niš
T2  - Facta Universitatis - Series Mechanical Engineering
T1  - 3d digitization of featureless dental models using close range photogrammetry aided by noise based patterns
VL  - 16
IS  - 3
SP  - 297
EP  - 305
DO  - 10.22190/FUME170620029S
ER  - 

@article{
author = "Santoši, Željko and Budak, Igor and Sokac, Mario and Puškar, Tatjana and Vukelić, Đorđe and Trifković, Branka",
year = "2018",
abstract = "Development and improvement of 3D digitizing systems provide for the ability to digitize a growing number of materials and geometrical forms of greater complexity. This paper presents the application of 3D digitizing system using close range photogrammetry on the upper jaw cast in plaster in order to obtain its 3D model. Because of the low visual characteristics of gypsum, such as color and texture, many questions arise about the possibility of applying this particular method to this type of physical models. In order to overcome bad visual properties of gypsum, this paper analyzes the possibility of the photogrammetry method application supported by the projected light texture which is based on patterns in the form of noise-obtained mathematically modeled functions. In order to determine the selected image for light texture which gives the better results, an experiment was designed and carried out. Only two images were tested. One image is selected based on previous research and the other one was generated by the Matlab function for uniformly distributed random numbers. For validation and a comparative analysis of the results, an object of 3D digitization was generated with and without projected light texture. CAD inspection was applied for the analysis of the obtained 3D digitizing results. 3D model obtained by approved professional optical 3D scanner as a reference was used. The results in this paper confirm better accuracy of 3D models obtained with the use of light textures, but this approach requires additional hardware and setup adjustment for images acquisition.",
publisher = "Univerzitet u Nišu, Niš",
journal = "Facta Universitatis - Series Mechanical Engineering",
title = "3d digitization of featureless dental models using close range photogrammetry aided by noise based patterns",
volume = "16",
number = "3",
pages = "297-305",
doi = "10.22190/FUME170620029S"
}

Santoši, Ž., Budak, I., Sokac, M., Puškar, T., Vukelić, Đ.,& Trifković, B.. (2018). 3d digitization of featureless dental models using close range photogrammetry aided by noise based patterns. in Facta Universitatis - Series Mechanical Engineering
Univerzitet u Nišu, Niš., 16(3), 297-305.
https://doi.org/10.22190/FUME170620029S

Santoši Ž, Budak I, Sokac M, Puškar T, Vukelić Đ, Trifković B. 3d digitization of featureless dental models using close range photogrammetry aided by noise based patterns. in Facta Universitatis - Series Mechanical Engineering. 2018;16(3):297-305.
doi:10.22190/FUME170620029S .

Santoši, Željko, Budak, Igor, Sokac, Mario, Puškar, Tatjana, Vukelić, Đorđe, Trifković, Branka, "3d digitization of featureless dental models using close range photogrammetry aided by noise based patterns" in Facta Universitatis - Series Mechanical Engineering, 16, no. 3 (2018):297-305,
https://doi.org/10.22190/FUME170620029S . .