TY  - JOUR
AU  - Pajić, Srbislav
AU  - Antić, Svetlana
AU  - Vukicević, Arso M.
AU  - Đorđević, Nenad
AU  - Jovicić, Gordana
AU  - Savić, Živorad
AU  - Saveljić, Igor
AU  - Janović, Aleksa
AU  - Pešić, Zoran
AU  - Đurić, Marija
AU  - Filipović, Nenad
PY  - 2017
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2215
AB  - Anatomy of frontal sinuses varies individually, from differences in volume and shape to a rare case when the sinuses are absent. However, there are scarce data related to influence of these variations on impact generated fracture pattern. Therefore, the aim of this study was to analyse the influence of frontal sinus volume on the stress distribution and fracture pattern in the frontal region. The study included four representative Finite Element models of the skull. Reference model was built on the basis of computed tomography scans of a human head with normally developed frontal sinuses. By modifying the reference model, three additional models were generated: a model without sinuses, with hypoplasic, and with hyperplasic sinuses. A 7.7 kN force was applied perpendicularly to the forehead of each model, in order to simulate a frontal impact. The results demonstrated that the distribution of impact stress in frontal region depends on the frontal sinus volume. The anterior sinus wall showed the highest fragility in case with hyperplasic sinuses, whereas posterior wall/inner plate showed more fragility in cases with hypoplasic and undeveloped sinuses. Well-developed frontal sinusesmight, through absorption of the impact energy by anterior wall, protect the posterior wall and intracranial contents.
PB  - Frontiers Media Sa, Lausanne
T2  - Frontiers in Physiology
T1  - Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study
VL  - 8
DO  - 10.3389/fphys.2017.00493
ER  - 

@article{
author = "Pajić, Srbislav and Antić, Svetlana and Vukicević, Arso M. and Đorđević, Nenad and Jovicić, Gordana and Savić, Živorad and Saveljić, Igor and Janović, Aleksa and Pešić, Zoran and Đurić, Marija and Filipović, Nenad",
year = "2017",
abstract = "Anatomy of frontal sinuses varies individually, from differences in volume and shape to a rare case when the sinuses are absent. However, there are scarce data related to influence of these variations on impact generated fracture pattern. Therefore, the aim of this study was to analyse the influence of frontal sinus volume on the stress distribution and fracture pattern in the frontal region. The study included four representative Finite Element models of the skull. Reference model was built on the basis of computed tomography scans of a human head with normally developed frontal sinuses. By modifying the reference model, three additional models were generated: a model without sinuses, with hypoplasic, and with hyperplasic sinuses. A 7.7 kN force was applied perpendicularly to the forehead of each model, in order to simulate a frontal impact. The results demonstrated that the distribution of impact stress in frontal region depends on the frontal sinus volume. The anterior sinus wall showed the highest fragility in case with hyperplasic sinuses, whereas posterior wall/inner plate showed more fragility in cases with hypoplasic and undeveloped sinuses. Well-developed frontal sinusesmight, through absorption of the impact energy by anterior wall, protect the posterior wall and intracranial contents.",
publisher = "Frontiers Media Sa, Lausanne",
journal = "Frontiers in Physiology",
title = "Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study",
volume = "8",
doi = "10.3389/fphys.2017.00493"
}

Pajić, S., Antić, S., Vukicević, A. M., Đorđević, N., Jovicić, G., Savić, Ž., Saveljić, I., Janović, A., Pešić, Z., Đurić, M.,& Filipović, N.. (2017). Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study. in Frontiers in Physiology
Frontiers Media Sa, Lausanne., 8.
https://doi.org/10.3389/fphys.2017.00493

Pajić S, Antić S, Vukicević AM, Đorđević N, Jovicić G, Savić Ž, Saveljić I, Janović A, Pešić Z, Đurić M, Filipović N. Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study. in Frontiers in Physiology. 2017;8.
doi:10.3389/fphys.2017.00493 .

Pajić, Srbislav, Antić, Svetlana, Vukicević, Arso M., Đorđević, Nenad, Jovicić, Gordana, Savić, Živorad, Saveljić, Igor, Janović, Aleksa, Pešić, Zoran, Đurić, Marija, Filipović, Nenad, "Trauma of the Frontal Region Is Influenced by the Volume of Frontal Sinuses. A Finite Element Study" in Frontiers in Physiology, 8 (2017),
https://doi.org/10.3389/fphys.2017.00493 . .

TY  - JOUR
AU  - Janović, Aleksa
AU  - Saveljić, Igor
AU  - Vukicević, Arso M.
AU  - Nikolić, Dalibor
AU  - Rakočević, Zoran
AU  - Jovicić, Gordana
AU  - Filipović, Nenad
AU  - Đurić, Marija
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2050
AB  - Understanding of the occlusal load distribution through the mid-facial skeleton in natural dentition is essential because alterations in magnitude and/or direction of occlusal forces may cause remarkable changes in cortical and trabecular bone structure. Previous analyses by strain gauge technique, photoelastic and, more recently, finite element (FE) methods provided no direct evidence for occlusal load distribution through the cortical and trabecular bone compartments individually. Therefore, we developed an improved three-dimensional FE model of the human skull in order to clarify the distribution of occlusal forces through the cortical and trabecular bone during habitual masticatory activities. Particular focus was placed on the load transfer through the anterior and posterior maxilla. The results were presented in von Mises stress (VMS) and the maximum principal stress, and compared to the reported FE and strain gauge data. Our qualitative stress analysis indicates that occlusal forces distribute through the mid-facial skeleton along five vertical and two horizontal buttresses. We demonstrated that cortical bone has a priority in the transfer of occlusal load in the anterior maxilla, whereas both cortical and trabecular bone in the posterior maxilla are equally involved in performing this task Observed site dependence of the occlusal load distribution may help clinicians in creating strategies for implantology and orthodontic treatments. Additionally, the magnitude of VMS in our model was significantly lower in comparison to previous FE models composed only of cortical bone. This finding suggests that both cortical and trabecular bone should be modeled whenever stress will be quantitatively analyzed.
PB  - Elsevier Gmbh, Munich
T2  - Annals of Anatomy - Anatomischer Anzeiger
T1  - Occlusal load distribution through the cortical and trabecular bone of the human mid-facial skeleton in natural dentition: A three-dimensional finite element study
VL  - 197
SP  - 16
EP  - 23
DO  - 10.1016/j.aanat.2014.09.002
ER  - 

@article{
author = "Janović, Aleksa and Saveljić, Igor and Vukicević, Arso M. and Nikolić, Dalibor and Rakočević, Zoran and Jovicić, Gordana and Filipović, Nenad and Đurić, Marija",
year = "2015",
abstract = "Understanding of the occlusal load distribution through the mid-facial skeleton in natural dentition is essential because alterations in magnitude and/or direction of occlusal forces may cause remarkable changes in cortical and trabecular bone structure. Previous analyses by strain gauge technique, photoelastic and, more recently, finite element (FE) methods provided no direct evidence for occlusal load distribution through the cortical and trabecular bone compartments individually. Therefore, we developed an improved three-dimensional FE model of the human skull in order to clarify the distribution of occlusal forces through the cortical and trabecular bone during habitual masticatory activities. Particular focus was placed on the load transfer through the anterior and posterior maxilla. The results were presented in von Mises stress (VMS) and the maximum principal stress, and compared to the reported FE and strain gauge data. Our qualitative stress analysis indicates that occlusal forces distribute through the mid-facial skeleton along five vertical and two horizontal buttresses. We demonstrated that cortical bone has a priority in the transfer of occlusal load in the anterior maxilla, whereas both cortical and trabecular bone in the posterior maxilla are equally involved in performing this task Observed site dependence of the occlusal load distribution may help clinicians in creating strategies for implantology and orthodontic treatments. Additionally, the magnitude of VMS in our model was significantly lower in comparison to previous FE models composed only of cortical bone. This finding suggests that both cortical and trabecular bone should be modeled whenever stress will be quantitatively analyzed.",
publisher = "Elsevier Gmbh, Munich",
journal = "Annals of Anatomy - Anatomischer Anzeiger",
title = "Occlusal load distribution through the cortical and trabecular bone of the human mid-facial skeleton in natural dentition: A three-dimensional finite element study",
volume = "197",
pages = "16-23",
doi = "10.1016/j.aanat.2014.09.002"
}

Janović, A., Saveljić, I., Vukicević, A. M., Nikolić, D., Rakočević, Z., Jovicić, G., Filipović, N.,& Đurić, M.. (2015). Occlusal load distribution through the cortical and trabecular bone of the human mid-facial skeleton in natural dentition: A three-dimensional finite element study. in Annals of Anatomy - Anatomischer Anzeiger
Elsevier Gmbh, Munich., 197, 16-23.
https://doi.org/10.1016/j.aanat.2014.09.002

Janović A, Saveljić I, Vukicević AM, Nikolić D, Rakočević Z, Jovicić G, Filipović N, Đurić M. Occlusal load distribution through the cortical and trabecular bone of the human mid-facial skeleton in natural dentition: A three-dimensional finite element study. in Annals of Anatomy - Anatomischer Anzeiger. 2015;197:16-23.
doi:10.1016/j.aanat.2014.09.002 .

Janović, Aleksa, Saveljić, Igor, Vukicević, Arso M., Nikolić, Dalibor, Rakočević, Zoran, Jovicić, Gordana, Filipović, Nenad, Đurić, Marija, "Occlusal load distribution through the cortical and trabecular bone of the human mid-facial skeleton in natural dentition: A three-dimensional finite element study" in Annals of Anatomy - Anatomischer Anzeiger, 197 (2015):16-23,
https://doi.org/10.1016/j.aanat.2014.09.002 . .

TY  - JOUR
AU  - Antić, Svetlana
AU  - Vukicević, Arso M.
AU  - Milasinović, Marko
AU  - Saveljić, Igor
AU  - Jovicić, Gordana
AU  - Filipović, Nenad
AU  - Rakočević, Zoran
AU  - Đurić, Marija
PY  - 2015
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1971
AB  - The aim of the present study was to investigate the influences of the presence and position of a lower third molar (M3) on the fragility of mandibular angle and condyle, using finite element analysis. From computed tomographic scans of a human mandible with normally erupted M3, two additional virtual models were generated: a mandibular model with partially impacted M3 and a model without M3. Two cases of impact were considered: a frontal and a lateral blow. The results are based on the chromatic analysis of the distributed von Mises and principal stresses, and calculation of their failure indices. In the frontal blow, the angle region showed the highest stress in the case with partially impacted M3, and the condylar region in the case without M3. Compressive stresses were dominant but caused no failure. Tensile stresses were recorded in the retromolar areas, but caused failure only in the case with partially impacted M3. In the lateral blow, the stress concentrated at the point of impact, in the ipsilateral and contralateral angle and condylar regions. The highest stresses were recorded in the case with partially impacted M3. Tensile stresses caused the failure on the ipsilateral side, whereas compressive stresses on the contralateral side.
PB  - Churchill Livingstone, Edinburgh
T2  - Journal of Cranio-Maxillofacial Surgery
T1  - Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study
VL  - 43
IS  - 6
SP  - 870
EP  - 878
DO  - 10.1016/j.jcms.2015.03.025
ER  - 

@article{
author = "Antić, Svetlana and Vukicević, Arso M. and Milasinović, Marko and Saveljić, Igor and Jovicić, Gordana and Filipović, Nenad and Rakočević, Zoran and Đurić, Marija",
year = "2015",
abstract = "The aim of the present study was to investigate the influences of the presence and position of a lower third molar (M3) on the fragility of mandibular angle and condyle, using finite element analysis. From computed tomographic scans of a human mandible with normally erupted M3, two additional virtual models were generated: a mandibular model with partially impacted M3 and a model without M3. Two cases of impact were considered: a frontal and a lateral blow. The results are based on the chromatic analysis of the distributed von Mises and principal stresses, and calculation of their failure indices. In the frontal blow, the angle region showed the highest stress in the case with partially impacted M3, and the condylar region in the case without M3. Compressive stresses were dominant but caused no failure. Tensile stresses were recorded in the retromolar areas, but caused failure only in the case with partially impacted M3. In the lateral blow, the stress concentrated at the point of impact, in the ipsilateral and contralateral angle and condylar regions. The highest stresses were recorded in the case with partially impacted M3. Tensile stresses caused the failure on the ipsilateral side, whereas compressive stresses on the contralateral side.",
publisher = "Churchill Livingstone, Edinburgh",
journal = "Journal of Cranio-Maxillofacial Surgery",
title = "Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study",
volume = "43",
number = "6",
pages = "870-878",
doi = "10.1016/j.jcms.2015.03.025"
}

Antić, S., Vukicević, A. M., Milasinović, M., Saveljić, I., Jovicić, G., Filipović, N., Rakočević, Z.,& Đurić, M.. (2015). Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study. in Journal of Cranio-Maxillofacial Surgery
Churchill Livingstone, Edinburgh., 43(6), 870-878.
https://doi.org/10.1016/j.jcms.2015.03.025

Antić S, Vukicević AM, Milasinović M, Saveljić I, Jovicić G, Filipović N, Rakočević Z, Đurić M. Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study. in Journal of Cranio-Maxillofacial Surgery. 2015;43(6):870-878.
doi:10.1016/j.jcms.2015.03.025 .

Antić, Svetlana, Vukicević, Arso M., Milasinović, Marko, Saveljić, Igor, Jovicić, Gordana, Filipović, Nenad, Rakočević, Zoran, Đurić, Marija, "Impact of the lower third molar presence and position on the fragility of mandibular angle and condyle: A Three-dimensional finite element study" in Journal of Cranio-Maxillofacial Surgery, 43, no. 6 (2015):870-878,
https://doi.org/10.1016/j.jcms.2015.03.025 . .