TY  - JOUR
AU  - Petrović, Bojan
AU  - Marković, Evgenija
AU  - Perić, Tamara
AU  - Kojić, Sanja
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2407
AB  - Changes in composition and new material characteristics require verification in clinical and experimental studies. Investigating glass-ionomer cements under laboratory conditions encounters problems in interpreting the results and in comparing them with other types of materials tested in the same way. As the connection between the glass-ionomer cements and the dental tissues is delicate, it is often the case that the impact of fractures and other artifacts is either underestimated or over-dimensioned when interpreting the results. A critical review was performed, with defining the main problems regarding the usage of SEM, EDX and nanoindentation techniques in glass-ionomer based materials evaluation.
T2  - Advanced Technologies & Materials
T1  - Challenges in experimental evaluation of morphological, chemo-mechanical and adhesive properties of glass-ionomer based dental materials
VL  - 44
IS  - 2
SP  - 25
EP  - 30
DO  - 10.24867/ATM-2019-2-005
ER  - 

@article{
author = "Petrović, Bojan and Marković, Evgenija and Perić, Tamara and Kojić, Sanja",
year = "2019",
abstract = "Changes in composition and new material characteristics require verification in clinical and experimental studies. Investigating glass-ionomer cements under laboratory conditions encounters problems in interpreting the results and in comparing them with other types of materials tested in the same way. As the connection between the glass-ionomer cements and the dental tissues is delicate, it is often the case that the impact of fractures and other artifacts is either underestimated or over-dimensioned when interpreting the results. A critical review was performed, with defining the main problems regarding the usage of SEM, EDX and nanoindentation techniques in glass-ionomer based materials evaluation.",
journal = "Advanced Technologies & Materials",
title = "Challenges in experimental evaluation of morphological, chemo-mechanical and adhesive properties of glass-ionomer based dental materials",
volume = "44",
number = "2",
pages = "25-30",
doi = "10.24867/ATM-2019-2-005"
}

Petrović, B., Marković, E., Perić, T.,& Kojić, S.. (2019). Challenges in experimental evaluation of morphological, chemo-mechanical and adhesive properties of glass-ionomer based dental materials. in Advanced Technologies & Materials, 44(2), 25-30.
https://doi.org/10.24867/ATM-2019-2-005

Petrović B, Marković E, Perić T, Kojić S. Challenges in experimental evaluation of morphological, chemo-mechanical and adhesive properties of glass-ionomer based dental materials. in Advanced Technologies & Materials. 2019;44(2):25-30.
doi:10.24867/ATM-2019-2-005 .

Petrović, Bojan, Marković, Evgenija, Perić, Tamara, Kojić, Sanja, "Challenges in experimental evaluation of morphological, chemo-mechanical and adhesive properties of glass-ionomer based dental materials" in Advanced Technologies & Materials, 44, no. 2 (2019):25-30,
https://doi.org/10.24867/ATM-2019-2-005 . .

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  - Marković, Dejan
AU  - Kojić, Sanja
AU  - Perić, Tamara
AU  - Dubourg, Georges
AU  - Drljaca, Mihailo
AU  - Stojanović, Goran
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2383
AB  - The aim of this work was to evaluate the nano-mechanical properties of glass ionomer materials, the ion concentrations at the surfaces in relation to the storage media and the pH environments using a scanning electron microscope with an energy-dispersive spectrometer (SEM/EDX). the glass-ionomer-based materials, Fuji Triage (FT), Fuji VIII (FVIII). Fuji IX GP (FIX), were analyzed. The sample comprised 45 cured cement disks. Five specimens of each tested material were placed in 3 storage solutions (saline, acidic solution with pH of 5.5, NaF solution with 0.05 % of fluoride). Nano-indentations were performed with a force up to 30 mN, penetration depths of 2500-2700 nm for 1 d and 21 d after setting. The EDX evaluation was carried out for each experimental disk, identifying the ions: O, Al, Sr, Si, F,Na, P, Ca. The level of significance was placed at p  lt  0.05.The highest fluoride proportion at the specimen surface was recorded in the FT material. FT also exhibited the lowest fluoride ions content when stored in low-pH environments compared with the other tested materials (p  lt  0.05). The surface hardness of the tested materials decreased from 1.377 GPa (in saline) to 0.03 GPa (in acid). The Young's modulus varied from 14.35 GPa to 0.112 GPa, depending on the material type (Fuji VIII>Fuji IX>FT) (p  lt  0.001) and the storage media (p  lt  0.001). Both the mechanical and cariostatic surface properties of commercially available glass ionomer materials are affected by the storage media.
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in Tehnologije
T1  - Characterization of glass ionomer cements stored in various solutions
VL  - 53
IS  - 2
SP  - 285
EP  - 293
DO  - 10.17222/mit.2018.159
ER  - 

@article{
author = "Petrović, Bojan and Marković, Dejan and Kojić, Sanja and Perić, Tamara and Dubourg, Georges and Drljaca, Mihailo and Stojanović, Goran",
year = "2019",
abstract = "The aim of this work was to evaluate the nano-mechanical properties of glass ionomer materials, the ion concentrations at the surfaces in relation to the storage media and the pH environments using a scanning electron microscope with an energy-dispersive spectrometer (SEM/EDX). the glass-ionomer-based materials, Fuji Triage (FT), Fuji VIII (FVIII). Fuji IX GP (FIX), were analyzed. The sample comprised 45 cured cement disks. Five specimens of each tested material were placed in 3 storage solutions (saline, acidic solution with pH of 5.5, NaF solution with 0.05 % of fluoride). Nano-indentations were performed with a force up to 30 mN, penetration depths of 2500-2700 nm for 1 d and 21 d after setting. The EDX evaluation was carried out for each experimental disk, identifying the ions: O, Al, Sr, Si, F,Na, P, Ca. The level of significance was placed at p  lt  0.05.The highest fluoride proportion at the specimen surface was recorded in the FT material. FT also exhibited the lowest fluoride ions content when stored in low-pH environments compared with the other tested materials (p  lt  0.05). The surface hardness of the tested materials decreased from 1.377 GPa (in saline) to 0.03 GPa (in acid). The Young's modulus varied from 14.35 GPa to 0.112 GPa, depending on the material type (Fuji VIII>Fuji IX>FT) (p  lt  0.001) and the storage media (p  lt  0.001). Both the mechanical and cariostatic surface properties of commercially available glass ionomer materials are affected by the storage media.",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in Tehnologije",
title = "Characterization of glass ionomer cements stored in various solutions",
volume = "53",
number = "2",
pages = "285-293",
doi = "10.17222/mit.2018.159"
}

Petrović, B., Marković, D., Kojić, S., Perić, T., Dubourg, G., Drljaca, M.,& Stojanović, G.. (2019). Characterization of glass ionomer cements stored in various solutions. in Materiali in Tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 53(2), 285-293.
https://doi.org/10.17222/mit.2018.159

Petrović B, Marković D, Kojić S, Perić T, Dubourg G, Drljaca M, Stojanović G. Characterization of glass ionomer cements stored in various solutions. in Materiali in Tehnologije. 2019;53(2):285-293.
doi:10.17222/mit.2018.159 .

Petrović, Bojan, Marković, Dejan, Kojić, Sanja, Perić, Tamara, Dubourg, Georges, Drljaca, Mihailo, Stojanović, Goran, "Characterization of glass ionomer cements stored in various solutions" in Materiali in Tehnologije, 53, no. 2 (2019):285-293,
https://doi.org/10.17222/mit.2018.159 . .

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 . .

TY  - JOUR
AU  - Marković, Dejan
AU  - Petrović, Bojan
AU  - Perić, Tamara
AU  - Trišić, Dijana
AU  - Kojić, Sanja
AU  - Kuljić, Božidar L.
AU  - Stojanović, Goran
PY  - 2019
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2376
AB  - Purpose: The objective was to assess the effect of fissure depth and enamel surface preparation protocols on penetration of resin-based, giomer and glass-ionomer fissure sealants. Materials and Methods: Ninety extracted third molars were assigned into three groups according to the material used. All three groups were subsequently divided depending on tooth preparation: no pretreatment or surface preparation with 10% polyacrylic acid, 37% phosphoric acid, or self-etching adhesive. In addition, Er,Cr:YSGG laser or air abrasion were employed in all subgroups. The penetration was evaluated using scanning electron microscopy. Results: The groups that were pretreated with an appropriate acid resulted in superior penetration of glass-ionomer and resin-based sealants when compared with other surface preparation protocols (p  lt  0.05). The exception was teeth treated with both air abrasion and acid etching. Both preparation protocol and fissure depth significantly affected the sealant penetration (p  lt  0.05), but fissure depth had a greater impact on fissure penetration than did enamel surface pretreatment. Conclusion: All investigated materials exhibit similar properties regarding sealant penetration. Penetration of a fissure sealant is significantly influenced by the fissure depth. In regard to enamel surface preparation protocol, a pretreatment with phosphoric acid in resin-based and polyacrylic acid in glass-ionomers appears to be essential in obtaining the adequate penetration of a sealing material.
PB  - Quintessence Publishing Co Inc, Hanover Park
T2  - Oral Health & Preventive Dentistry
T1  - Evaluation of Sealant Penetration in Relation to Fissure Morphology, Enamel Surface Preparation Protocol and Sealing Material
VL  - 17
IS  - 4
SP  - 349
EP  - 355
DO  - 10.3290/j.ohpd.a42689
ER  - 

@article{
author = "Marković, Dejan and Petrović, Bojan and Perić, Tamara and Trišić, Dijana and Kojić, Sanja and Kuljić, Božidar L. and Stojanović, Goran",
year = "2019",
abstract = "Purpose: The objective was to assess the effect of fissure depth and enamel surface preparation protocols on penetration of resin-based, giomer and glass-ionomer fissure sealants. Materials and Methods: Ninety extracted third molars were assigned into three groups according to the material used. All three groups were subsequently divided depending on tooth preparation: no pretreatment or surface preparation with 10% polyacrylic acid, 37% phosphoric acid, or self-etching adhesive. In addition, Er,Cr:YSGG laser or air abrasion were employed in all subgroups. The penetration was evaluated using scanning electron microscopy. Results: The groups that were pretreated with an appropriate acid resulted in superior penetration of glass-ionomer and resin-based sealants when compared with other surface preparation protocols (p  lt  0.05). The exception was teeth treated with both air abrasion and acid etching. Both preparation protocol and fissure depth significantly affected the sealant penetration (p  lt  0.05), but fissure depth had a greater impact on fissure penetration than did enamel surface pretreatment. Conclusion: All investigated materials exhibit similar properties regarding sealant penetration. Penetration of a fissure sealant is significantly influenced by the fissure depth. In regard to enamel surface preparation protocol, a pretreatment with phosphoric acid in resin-based and polyacrylic acid in glass-ionomers appears to be essential in obtaining the adequate penetration of a sealing material.",
publisher = "Quintessence Publishing Co Inc, Hanover Park",
journal = "Oral Health & Preventive Dentistry",
title = "Evaluation of Sealant Penetration in Relation to Fissure Morphology, Enamel Surface Preparation Protocol and Sealing Material",
volume = "17",
number = "4",
pages = "349-355",
doi = "10.3290/j.ohpd.a42689"
}

Marković, D., Petrović, B., Perić, T., Trišić, D., Kojić, S., Kuljić, B. L.,& Stojanović, G.. (2019). Evaluation of Sealant Penetration in Relation to Fissure Morphology, Enamel Surface Preparation Protocol and Sealing Material. in Oral Health & Preventive Dentistry
Quintessence Publishing Co Inc, Hanover Park., 17(4), 349-355.
https://doi.org/10.3290/j.ohpd.a42689

Marković D, Petrović B, Perić T, Trišić D, Kojić S, Kuljić BL, Stojanović G. Evaluation of Sealant Penetration in Relation to Fissure Morphology, Enamel Surface Preparation Protocol and Sealing Material. in Oral Health & Preventive Dentistry. 2019;17(4):349-355.
doi:10.3290/j.ohpd.a42689 .

Marković, Dejan, Petrović, Bojan, Perić, Tamara, Trišić, Dijana, Kojić, Sanja, Kuljić, Božidar L., Stojanović, Goran, "Evaluation of Sealant Penetration in Relation to Fissure Morphology, Enamel Surface Preparation Protocol and Sealing Material" in Oral Health & Preventive Dentistry, 17, no. 4 (2019):349-355,
https://doi.org/10.3290/j.ohpd.a42689 . .