TY  - JOUR
AU  - Jovanović, Nikola
AU  - Petrović, Bojan
AU  - Kojić, Sanja
AU  - Sipovac, Milica
AU  - Marković, Dejan
AU  - Stefanović, Sofija
AU  - Stojanović, Goran
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2395
AB  - Background: All objects put into a child's mouth could be hazardous in terms of trauma and toxic substance exposure. The aims of this study were to evaluate morphological characteristics of the primary teeth bite marks inflicted on various materials and to assess material wear using experimental model. Methods: Bite marks were analyzed on five materials: rubber, plastic, foil, wood, and silicone. In order to mimic children mouthing behavior an experimental setup has been designed using primary teeth placed in dentures and children's equipment specimens. Results: Deciduous teeth make visible and recognizable traces when using physiological forces on all investigated materials. The most significant material loss was revealed in silicone samples, but it has been observed in all material groups, while mouthing with incisors using higher mastication forces were identified as significant predictors for material wear. There were no significant differences between type, species, and morphological-morphometric characteristics of the bite marks which are made by incisors, canines, and molars. Conclusions: In the range of physiological bite forces, deciduous teeth lead to wear of material from which toys are made while the analysis of bite marks in children equipment could give some information regarding the risk of trauma and exposure.
PB  - Mdpi, Basel
T2  - International Journal of Environmental Research & Public Health
T1  - Primary Teeth Bite Marks Analysis on Various Materials: A Possible Tool in Children Health Risk Analysis and Safety Assessment
VL  - 16
IS  - 13
DO  - 10.3390/ijerph16132434
ER  - 

@article{
author = "Jovanović, Nikola and Petrović, Bojan and Kojić, Sanja and Sipovac, Milica and Marković, Dejan and Stefanović, Sofija and Stojanović, Goran",
year = "2019",
abstract = "Background: All objects put into a child's mouth could be hazardous in terms of trauma and toxic substance exposure. The aims of this study were to evaluate morphological characteristics of the primary teeth bite marks inflicted on various materials and to assess material wear using experimental model. Methods: Bite marks were analyzed on five materials: rubber, plastic, foil, wood, and silicone. In order to mimic children mouthing behavior an experimental setup has been designed using primary teeth placed in dentures and children's equipment specimens. Results: Deciduous teeth make visible and recognizable traces when using physiological forces on all investigated materials. The most significant material loss was revealed in silicone samples, but it has been observed in all material groups, while mouthing with incisors using higher mastication forces were identified as significant predictors for material wear. There were no significant differences between type, species, and morphological-morphometric characteristics of the bite marks which are made by incisors, canines, and molars. Conclusions: In the range of physiological bite forces, deciduous teeth lead to wear of material from which toys are made while the analysis of bite marks in children equipment could give some information regarding the risk of trauma and exposure.",
publisher = "Mdpi, Basel",
journal = "International Journal of Environmental Research & Public Health",
title = "Primary Teeth Bite Marks Analysis on Various Materials: A Possible Tool in Children Health Risk Analysis and Safety Assessment",
volume = "16",
number = "13",
doi = "10.3390/ijerph16132434"
}

Jovanović, N., Petrović, B., Kojić, S., Sipovac, M., Marković, D., Stefanović, S.,& Stojanović, G.. (2019). Primary Teeth Bite Marks Analysis on Various Materials: A Possible Tool in Children Health Risk Analysis and Safety Assessment. in International Journal of Environmental Research & Public Health
Mdpi, Basel., 16(13).
https://doi.org/10.3390/ijerph16132434

Jovanović N, Petrović B, Kojić S, Sipovac M, Marković D, Stefanović S, Stojanović G. Primary Teeth Bite Marks Analysis on Various Materials: A Possible Tool in Children Health Risk Analysis and Safety Assessment. in International Journal of Environmental Research & Public Health. 2019;16(13).
doi:10.3390/ijerph16132434 .

Jovanović, Nikola, Petrović, Bojan, Kojić, Sanja, Sipovac, Milica, Marković, Dejan, Stefanović, Sofija, Stojanović, Goran, "Primary Teeth Bite Marks Analysis on Various Materials: A Possible Tool in Children Health Risk Analysis and Safety Assessment" in International Journal of Environmental Research & Public Health, 16, no. 13 (2019),
https://doi.org/10.3390/ijerph16132434 . .

TY  - JOUR
AU  - Petrović, Bojan
AU  - Kojić, Sanja
AU  - Perić, Tamara
AU  - Sipovac, Milica
AU  - Lazarević, Jovana
AU  - Stefanović, Sofija
AU  - Stojanović, Goran
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2380
AB  - Purpose: The purpose of this study was to quantify the elastic properties and evaluate microscopical features of raw and boiled metatarsal bovine bone. Methods: The elastic modulus, hardness and microscopic surface of raw and cooked bovine metatarsal bone have been investigated using nanoindentation, SEM/EDX and Panasis microscope. Results: Regarding raw bovine bone, the average elastic modulus was 30.515 +/- 6,769 GPa, while the average hardness was 0.5683 +/- 0.211 GPa. When it comes to boiled bone corresponding values were 22.298 +/- 7.0303 GPa and 0.408 +/- 0.199 GPa, respectively. The values for investigated parameters were significantly higher (p  lt  0.05) in raw bone specimens. Elastic modulus significantly correlated with hardness (p  lt  0.05). EDX analysis revealed significant decrease in wt% of oxygen in boiled samples (p  lt  0.05) No significant differences could be observed in SEM images particularly when analysing in smaller magnifications. Using higher magnification, additional branching of the existing voids as well as discrete reorganization and smoother edges of nutrient canals could be observed. The surface of boiled specimens was without the presence of crusts and layering, and no microscopical evidence of structural damage could be observed. Conclusions: This study provides detailed analysis of hardness, elastic modulus of raw and cooked bovine bone and their relation and changes during exposure to temperature. These results of elastic moduli and hardness could be comparable to similar studies of bovine and human bone tissue, but the careful analysis of experimental design, type of the bone as well as limitations of the employed techniques must be carried out before interpolation of the results to other theoretical, clinical, biomaterial and archeological studies.
PB  - Wroclaw Univ Technology, Fac Computer Science & Management, Wroclaw
T2  - Acta of Bioengineering & Biomechanics
T1  - Surface characterization of the raw and cooked bovine cortical metatarsal bone
VL  - 21
IS  - 1
SP  - 13
EP  - 21
DO  - 10.5277/ABB-01197-2018-02
ER  - 

@article{
author = "Petrović, Bojan and Kojić, Sanja and Perić, Tamara and Sipovac, Milica and Lazarević, Jovana and Stefanović, Sofija and Stojanović, Goran",
year = "2019",
abstract = "Purpose: The purpose of this study was to quantify the elastic properties and evaluate microscopical features of raw and boiled metatarsal bovine bone. Methods: The elastic modulus, hardness and microscopic surface of raw and cooked bovine metatarsal bone have been investigated using nanoindentation, SEM/EDX and Panasis microscope. Results: Regarding raw bovine bone, the average elastic modulus was 30.515 +/- 6,769 GPa, while the average hardness was 0.5683 +/- 0.211 GPa. When it comes to boiled bone corresponding values were 22.298 +/- 7.0303 GPa and 0.408 +/- 0.199 GPa, respectively. The values for investigated parameters were significantly higher (p  lt  0.05) in raw bone specimens. Elastic modulus significantly correlated with hardness (p  lt  0.05). EDX analysis revealed significant decrease in wt% of oxygen in boiled samples (p  lt  0.05) No significant differences could be observed in SEM images particularly when analysing in smaller magnifications. Using higher magnification, additional branching of the existing voids as well as discrete reorganization and smoother edges of nutrient canals could be observed. The surface of boiled specimens was without the presence of crusts and layering, and no microscopical evidence of structural damage could be observed. Conclusions: This study provides detailed analysis of hardness, elastic modulus of raw and cooked bovine bone and their relation and changes during exposure to temperature. These results of elastic moduli and hardness could be comparable to similar studies of bovine and human bone tissue, but the careful analysis of experimental design, type of the bone as well as limitations of the employed techniques must be carried out before interpolation of the results to other theoretical, clinical, biomaterial and archeological studies.",
publisher = "Wroclaw Univ Technology, Fac Computer Science & Management, Wroclaw",
journal = "Acta of Bioengineering & Biomechanics",
title = "Surface characterization of the raw and cooked bovine cortical metatarsal bone",
volume = "21",
number = "1",
pages = "13-21",
doi = "10.5277/ABB-01197-2018-02"
}

Petrović, B., Kojić, S., Perić, T., Sipovac, M., Lazarević, J., Stefanović, S.,& Stojanović, G.. (2019). Surface characterization of the raw and cooked bovine cortical metatarsal bone. in Acta of Bioengineering & Biomechanics
Wroclaw Univ Technology, Fac Computer Science & Management, Wroclaw., 21(1), 13-21.
https://doi.org/10.5277/ABB-01197-2018-02

Petrović B, Kojić S, Perić T, Sipovac M, Lazarević J, Stefanović S, Stojanović G. Surface characterization of the raw and cooked bovine cortical metatarsal bone. in Acta of Bioengineering & Biomechanics. 2019;21(1):13-21.
doi:10.5277/ABB-01197-2018-02 .

Petrović, Bojan, Kojić, Sanja, Perić, Tamara, Sipovac, Milica, Lazarević, Jovana, Stefanović, Sofija, Stojanović, Goran, "Surface characterization of the raw and cooked bovine cortical metatarsal bone" in Acta of Bioengineering & Biomechanics, 21, no. 1 (2019):13-21,
https://doi.org/10.5277/ABB-01197-2018-02 . .