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Journal of Craniomaxillofacial Research، جلد ۶، شماره ۳، صفحات ۱۱۳-۱۲۱
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عنوان انگلیسی The comparison of three different fixation methods on bilateral sagittal split ramus osteotomy mandibular on a 3D of fully modelled mandible by the finite element method
چکیده انگلیسی مقاله In this paper, a full mandibular CT-scan in a specific patient is used to model BSSO surgery. The purpose is to compare the three most common fixation methods which are used in BSSO surgery by finite element method. Three different fixations are studied in order to obtain the minimum displacement of the lower jaw and optimum stress and strain on the specified fixation. The methods are two parallel plates with four screws, the operation of triangular screw configuration and one plate with four screws. The plates and the screw are modeled precisely by point clouds of Synthes Brand’s plate and screw. The mechanical properties of the full mandibular and, to obtain a practical model after the surgery, the mean jaw forces are extracted from literatures. It is resulted that the minimum displacement and stresses on the mandible and fixation tools happened in the Triangular screw configuration model and the two other methods have higher stress and lower displacement. Therefore, the mandibular in triangular method, experiences little deformation and the screws toler-ates lower stress and strain which is better than the other two methods. Keywords: Finite element analysis; FEA; Sagittal split ramus osteotomy; Parallel plates; Triangular screw.
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نویسندگان مقاله | Seyed Mohammad Ghorashi
Tehran University of Medical Sciences, Tehran, Iran.


| Mohammad Mehdi Keshavarzi
Department of Mechanical Engineering, University of Tehran, Tehran, Iran.


| Shahrzad Damercheli
Department of Mechanical Engineering, University of Tehran, Tehran, Iran.


| Alireza Parhiz
Department of Oral and Maxillofacial Surgery, Tehran University of Medical Sciences, Tehran, Iran.
نشانی اینترنتی http://jcr.tums.ac.ir/index.php/jcr/article/view/302
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