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Finite Element Analysis of Reconstruction of Mandibular Symphysis Defects Using Reconstruction Plates
오정환, 이백수, 한정수, 민지현, 문성준,
소속 상세정보
오정환 ( Oh Jung-Hwan ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
이백수 ( Lee Baek-Soo ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
한정수 ( Han Jung-Soo ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
민지현 ( Min Jee-Hyun ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
문성준 ( Mun Sung-Jun ) - 경희대학교 치의학전문대학원 구강악안면외과학교실
KMID : 0360120080300060513
Abstract
Purpose: This study aimed to evaluate distribution and maximal value of mechanical stresses on the reconstruction plate, bridging mandibular symphysis defect, and to optimize the most appropriate locations of the plate to distribute the stress causing the fracture of the plate.
Material and Methods : Four types of reconstruction were constructed by different number and location of the reconstruction plates on the 3 D finite element model (FEM) of a human edentulous mandible; Type I: one plate on the inferior border of the anterior mandible, Type II: one plate on the middle of the anterior mandible, Type III: one plate on the superior border of the anterior mandible, and Type IV: two plates on the inferior and superior border of the anterior mandible.
Results: The results showed that the maximal stress of type I (234.29 Mpa) was lower than that of type II (260.91 Mpa) and type III (247.37 Mpa), but higher than that of type IV (186.64 Mpa). We could also observe that the stresses are tending to focus on the inner side and inferior part of the plate which connected proximal segment from the vertical load.
Conclusion: On the basis of the findings, it was concluded that using a plate on the inferior border of mandible or two plates on the inferior and superior border of mandible are more favorable to distribute mechanical stresses, which could reduce the fracture of the plate.
키워드
Finite element method;FEM;Mandible;Reconstruction plate;Mechanical stress
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