Please use this identifier to cite or link to this item:
|Title in Portuguese:||Do erupted third molars weaken the mandibular angle after trauma to the chin region? a 3D finite element study|
|Author:||Bezerra, Tácio Pinheiro|
Silva Junior, Francisco Ilson da
Scarparo, H. C.
Costa, Fábio Wildson Gurgel
Soares, Eduardo Costa Studart
|Keywords:||Análise de Elementos Finitos|
|Publisher:||International Journal of Oral and Maxillofacial Surgery|
|Citation:||BEZERRA, T. P. et al. Do erupted third molars weaken the mandibular angle after trauma to the chin region? a 3D finite element study. International Journal of Oral and Maxillofacial Surgery, Copenhagen, DK, v. 42, n. 4, p. 474-480, abr. 2013.|
|Abstract:||It has been suggested that third molars increase mandibular fragility because they do not contribute to its strength. For ethical reasons, a human study design that would permit the elucidation of this interference is not possible. This study evaluated the impact of the presence of erupted third molars on the mandibular angle of resistance when submitted to trauma. A three-dimensional (3D) mandibular model was obtained through finite element methodology using computed tomography (CT) with the geometry and mechanical properties to reproduce a normal mandibular structure. Human mandibles with no, one or two erupted third molars were evaluated. Whenever the third molar was present there was a greater concentration of tensions around the cervical part of its alveolus. Approximated Von Mises equivalent stress of the third molar region was 107.035 MPa in the mandible with teeth and 64.6948 MPa in the mandible without teeth. In the condylar region it was 151.65 MPa when the third molar was present and 184.496 MPa when it was absent. The digital models created proved that the mandibular angle becomes more fragile in the presence of third molars. When they are absent the energy concentrates on the lateral e posterior aspect of the condylar neck.|
|metadata.dc.type:||Artigo de Periódico|
|Appears in Collections:||DCOD - Artigos publicados em revistas científicas|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.