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Head & Face Medicine
Published in: Head & Face Medicine 1/2010

Open Access 01-12-2010 | Research

Three lateral osteotomy designs for bilateral sagittal split osteotomy: biomechanical evaluation with three-dimensional finite element analysis

Authors: Hiromasa Takahashi, Shigeaki Moriyama, Haruhiko Furuta, Hisao Matsunaga, Yuki Sakamoto, Toshihiro Kikuta

Published in: Head & Face Medicine | Issue 1/2010

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Abstract

Background

The location of the lateral osteotomy cut during bilateral sagittal split osteotomy (BSSO) varies according to the surgeon's preference, and no consensus has been reached regarding the ideal location from the perspective of biomechanics. The purpose of this study was to evaluate the mechanical behavior of the mandible and screw-miniplate system among three lateral osteotomy designs for BSSO by using three-dimensional (3-D) finite element analysis (FEA).

Methods

The Trauner-Obwegeser (TO), Obwegeser (Ob), and Obwegeser-Dal Pont (OD) methods were used for BSSO. In all the FEA simulations, the distal segments were advanced by 5 mm. Each model was fixed by using miniplates. These were applied at four different locations, including along Champy's lines, to give 12 different FEA miniplate fixation methods. We examined these models under two different loads.

Results

The magnitudes of tooth displacement, the maximum bone stress in the vicinity of the screws, and the maximum stress on the screw-miniplate system were less in the OD method than in the Ob and TO methods at all the miniplate locations. In addition, Champy's lines models were less than those at the other miniplate locations.

Conclusions

The OD method allows greater mechanical stability of the mandible than the other two techniques. Further, miniplates placed along Champy's lines provide greater mechanical advantage than those placed at other locations.
Appendix
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Metadata
Title
Three lateral osteotomy designs for bilateral sagittal split osteotomy: biomechanical evaluation with three-dimensional finite element analysis
Authors
Hiromasa Takahashi
Shigeaki Moriyama
Haruhiko Furuta
Hisao Matsunaga
Yuki Sakamoto
Toshihiro Kikuta
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Head & Face Medicine / Issue 1/2010
Electronic ISSN: 1746-160X
DOI
https://doi.org/10.1186/1746-160X-6-4

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