Preprint Article Version 1 This version is not peer-reviewed

Finite Element Analysis of Adolescent Mandible Fracture Occurring during Accidents

Version 1 : Received: 28 October 2018 / Approved: 29 October 2018 / Online: 29 October 2018 (11:36:55 CET)

How to cite: Żmudzki, J.; Panek, K.; Chladek, G.; Adamiak, M.; Lipinski, P. Finite Element Analysis of Adolescent Mandible Fracture Occurring during Accidents. Preprints 2018, 2018100676 (doi: 10.20944/preprints201810.0676.v1). Żmudzki, J.; Panek, K.; Chladek, G.; Adamiak, M.; Lipinski, P. Finite Element Analysis of Adolescent Mandible Fracture Occurring during Accidents. Preprints 2018, 2018100676 (doi: 10.20944/preprints201810.0676.v1).

Abstract

The paper aims in assessing risks of mandible fractures consequent to impacts or sport accidents. The role of the structural stiffness of mandible, related to disocclusion state, is evaluated through numerical simulations using the finite element method (FEM). It has been assumed that the quasi-static stress field, due to distributed forces developed during accidents, could explain the common types of mandibular fractures. Geometric model of adolescent mandible was built, upon the basis of medical imaging, in CAD software with distinction between cortical layer and inner spongy bone. The finite element model of disoccluded mandible was next created. Mandibular condyles were supposed jammed in the maxillary fossae. The total force of 700 N, simulating an impact on mandible, has been sequentially applied in three distinct areas: centrally, at canine zone and at the mandibular angle. Clinically most frequent fractures of mandible were recognized through the analysis of maximal principal stress and maximal principal strain fields. Mandibular fracture during accidents can be analyzed at satisfactory level using linear quasi-static FE models for designing protections in sport and transport. The proposed approach can be improved by introducing more realistic interactions between condylar processes and fossae.

Subject Areas

mandible fracture; disocclusion state; finite element analysis; critical blow force

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