A comparative evaluation of the hybrid technique for fixation of the sagittal split ramus osteotomy in mandibular advancement by mechanical, photoelastic, and finite element analysis

作者：Loureiro Sato Fabio Ricardo; Asprino Luciana; Consani Simonides; Noritomi Pedro Y; de Moraes Marcio

来源：Oral Surgery Oral Medicine Oral Pathology Oral Radiology, 2012, 114(5): S60-S68.

DOI：10.1016/j.tripleo.2011.08.027

Objective. This study evaluated the mechanical characteristics and stress distribution of the hybrid technique fixation of the sagittal split ramus osteotomy. %26lt;br%26gt;Study Design. In the mechanical test, 10 polyurethane replicas of human hemimandibles of each group were submitted to linear loading test. For the photoelastic evaluation, 3 hemimandible replicas of photoelastic resin were subjected to photoelastic analysis. In the finite element analysis, 3 computer models simulated the displacement and the results of maximum principal stress were analyzed. %26lt;br%26gt;Results. The results of this study demonstrated that the fixation technique with 3 bicortical screws presented better mechanical resistance and stress distribution pattern when compared with the hybrid technique that, on the other hand, presents better results in comparison with a miniplate and monocortical screws. %26lt;br%26gt;Conclusions. The results suggest that the hybrid technique increased the resistance and improved stress distribution of miniplate/monocortical screw fixation, maintaining most of the advantages of this technique. (Oral Surg Oral Med Oral Pathol Oral Radiol 2012;114(suppl 5):S60-S68)

• 出版日期2012-11