Development of image-based dynamic finite element analysis method of mandible and elucidation of cause of torus

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K11353
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthodontics/Pediatric dentistry
• Research Institution: Showa University
• Principal Investigator: NAKANO HARUHISA 昭和大学, 歯学部, 准教授 (80297035)
• Co-Investigator(Renkei-kenkyūsha): TAKANO Naoki 慶応義塾大学, 理工学部, 教授 (10206782)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 下顎骨 / 動的有限要素解析 / 骨隆起 / 骨密度 / ヤング率 / 応力波 / 荷重条件 / 多次元パラメータ

Outline of Final Research Achievements

The purpose of this study is to develop a dynamic finite element analysis method for mandibular images and to identify the factors that cause bone protuberance. First, the effect of bone density distribution on the analysis was evaluated using a dynamic finite element method. The results suggested that it was not necessary to consider the bone density level and spatial distribution of Young’s modulus in mandibular stress analysis.
Next, the load conditions that cause the stress waves to be stationary were explored to identify the factors that affect bone protuberance. The results confirmed that stress distribution may be affected by the parametric conditions. However, it was difficult to explore the parameters that cause the stress waves to be stationary. This suggests that the development of an effective sampling method for multi-dimensional parameter space is necessary.

Free Research Field

歯科矯正学