플레이트의 소성변형 과정이 재건술에서 플레이트 안정성에 미치는 영향

• Published in: 한국CDE학회 논문집 Vol. 21; no. 3; pp. 234 - 241
• Main Authors: 박시명(Si Myung Park), 이득희(Deukhee Lee), 노건우(Gunwoo Noh)
• Format: Journal Article
• Language: Korean
• Published: (사)한국CDE학회 2016
• Subjects: Titanium plate; Finite Element Analysis; Mandible reconstruction; Plastic deformation
• ISSN: 2508-4003; 2508-402X

Conventional bent plate used in mandibular reconstruction surgery needs safety verification since its mechanical properties are changed due to the plastic deformation during the bending process. In this study we investigate stability of the plastically deformed plate and the plate with the same shape without plastic deformation through the finite element analysis(FEA). First we simulate the process of plate bending to fit the defect in patient. Then, the other plate is modelled to represent a customized plate with the same shape of the plastically deformed one, but without any residual stresses from plastic deformation. After binding these plates to the mandible, we conduct the masticatory simulation. Finally, we compare the resulting Von Mises stress of the customized plate and of the bent plate. The bent plate shows much higher stress than the customized one due to the residual stresses form the bending process. The study shows that plastic deformation in the plate may decrease the safety of the reconstruction surgery.