Development of the diagnostic system for skeletal asymmetry using the simulation of bone remodeling and 3D FEM

2015 Fiscal Year Final Research Report

• Project/Area Number: 24593086
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthodontic/Pediatric dentistry
• Research Institution: Niigata University
• Principal Investigator: NAOKO WATANABE 新潟大学, 医歯(薬)学総合研究科, 非常勤講師 (10397143)
• Co-Investigator(Kenkyū-buntansha): SAITO ISAO 新潟大学, 医歯学系, 教授 (90205633) ; HAYASHI TAKAHIRO 新潟大学, 医歯学系, 教授 (30761415)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 歯科矯正学 / 顎変形症 / 有限要素解析

Outline of Final Research Achievements

The finite element models of the skull with deviated occlusion were constructed using CT images, and then the loading conditions were set depending on the direction and cross sectional　area of the masticatory muscles. As a result, the model showed imbalanced stress distribution in both maxilla and mandible. Furthermore, alveolar bones also showed imbalanced stress distribution. Then, to elucidate the effects of the treatment changes on　the deviated occlusion, treatment models were created using the original deviated skull. The loading conditions were set based on the patient's original loading conditions. As a result, the imbalanced stress distribution was reduced in the maxilla. However, the imbalanced stress distribution showed little change in the mandibular body and alveolar bones.
These results of this study suggested that the loading conditions for the treatment model should be considered the changes of the masticatory muscles and surrounding tissues during the treatment.

Free Research Field

歯科矯正学