Three-dimensional finite element analysis of the stress distribution and displacement in different fixation methods of bilateral sagittal split ramus osteotomy
윤경인, 이종민, 박윤희, Park Myung-Kyun, 조영규, 박재억,
소속 상세정보
윤경인 ( Yun Kyoung-In ) - Catholic University College of Medicine St. Paul’s Hospital Department of Oral and Maxillofacial Surgery
이종민 ( Lee Jong-Min ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
박윤희 ( Park Yoon-Hee ) - Catholic University College of Medicine Uijeongbu St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
( Park Myung-Kyun ) - Myongji University Department of Mechanical Engineering
조영규 ( Cho Young-Gyu ) - Catholic University College of Medicine Department of Oral and Maxillofacial Surgery
박재억 ( Park Je-Uk ) - Catholic University Seoul St. Mary’s Hospital Department of Oral and Maxillofacial Surgery
KMID : 0355620120380050271
Abstract
Objectives: This study evaluated a range of fixation methods to determine which is best for the postoperative stabilization of a mandibular osteotomy using three-dimensional finite element analysis of the stress distribution on the plate, screw and surrounding bone and displacement of the lower
incisors.
Materials and Methods: The model was generated using the synthetic skull scan data, and the surface model was changed to a solid model using software. Bilateral sagittal split ramus osteotomy was performed using the program, and 8 different types of fixation methods were evaluated. A vertical load of 10 N was applied to the occlusal surface of the first molar.
Results: In the case of bicortical screws, von-Mises stress on the screws and screw hole and deflection of the lower central incisor were minimal in type 2 (inverted L pattern with 3 bicortical repositioning screws). In the case of plates, von-Mises stress was minimal in type 8 (fixation 5 mm above the inferior border of the mandible with 1 metal plate and 4 monocortical screws), and deflection of the lower central incisor was minimal in types 6 (fixation 5 mm below the superior border of the mandible with 1 metal plate and 4 monocortical screws) and 7 (fixation 12 mm below the superior border of the mandible with 1 metal plate and 4 monocortical screws).
Conclusion: Types 2 and 6 fixation methods provide better stability than the others.
키워드
3D finite element analysis; Fixation techniques; Sagittal split ramus osteotomy
원문 및 링크아웃 정보
등재저널 정보