AnÃlise da estabilidade funcional de um distrator osteogÃnico osseosuportado utilizando o mÃtodo dos elementos finitos / Functional Stability Analysis of an Endosseous Distractor Osteogenesis Using the Finite Elements Method

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The distraction osteogenesis is a surgical technique used in the dentistry for the transversal discrepancies correction of the jaw, having as basic principle the intrinsic capacity of some tissue development when submitted to the stress caused by slow and continuous traction. To obtain the osteogenesis success, the distractors osteogenesis symphysianic have to minimize any bone parts displacement. This work had the purpose to evaluate the stability of a distractor symphysis through three-dimensional models of finite elements where different setting positions and different amounts of setting screws are evaluated. The stability was evaluated through the determination of vertical displacements in the load direction in the range of 20 up to 140 N. Additionally; the results of an experimental analysis had been used to adjust the numerical models of finite elements. It was observed that, for the load profile applied, the stability is not a function of setting screws number. The stiffness of the distractor at cut region was the cause of the differences between fixations. In the distractor lower position setting the displacements levels had been lesser, indicating a better distractor stability.

ASSUNTO(S)

sÃnfise orthodontics engenharia mecanica distraÃÃo osteogÃnica elementos finitos symphysis ortodontia tensÃes distraction osteogenesis stress finite elements mÃtodo dos elementos finitos

ACESSO AO ARTIGO

Documentos Relacionados