The 3-D Finite Element Analysis Study Of The Stress Distribution And Displacement Of The Maxillary Transversal Distraction Osteogenesis

Distraction osteogenesis(DO) has been a powerful new technique for reconstructing the hypoplastic and malformed craniofacial skeleton in recent years. On the field of orthodontics, surgically assisted transpalatal DO has been widely used to widen maxilla. Although many researches have been done, there are some problems about stress and displacement caused by DO need further study. Finite element method(FEM) is an accurate, effective biomechanical method. There have been many FEM models established about tooth, mandible, and skull. But there are few reports of FEM study on DO. For the first time, a three-dimensional finite element model of human cranoifacial osteodistraction was established in this study . The stress distribution and displacement under different loads were evaluated. Content:1. A three-dimensional finite element model of the craniofacial complex was available with multislices helical CT scanned and computer softwares(Pro/E and Ansys).2. Simulated the state of maxillary transpalatal distraction osteogenesis at the first premolar and molar region.3. Simulated surgically assisted transpalatal DO. The stress distribution and displacement were compared with experiment 2.Results:1. A three-dimensional finite element model of the craniofacial complex was...