Comparison between stress analysis and clinical study for root fractured teeth treated with metal post.

金属桩治疗根折牙的应力分析与临床研究比较

• 批准号: 20791449
• 负责人: NIIMURA Hiroko
• 金额: $ 2.79万
• 依托单位: Matsumoto Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20791449/
• 关键词: 歯台築造; 有限要素; 歯根破折; 支台築造; 三次元有限要素; 応力解析; 有限要素法

A cause of alveolar bone absorption of mandibular premolar was investigated using three dimensional finite element models with and without alveolar bone absorption.For model weighted from lingual side without alveolar bone absorption, zone of stress concentration was found in central part of neck and corner of mesial or distal direction of the tooth. However, for model weighted from lingual side with alveolar bone absorption, stress concentration was not found. Also, for models weighted from buccal side and mesial or distal directions, stress concentration was not found.Therefore, alveolar bone absorption is caused by compressing stress from lingual side load.

使用有或没有肺泡吸收的三维有限元模型研究了下颌前磨牙的肺泡吸收的原因。对于从舌侧加权而没有肺泡骨吸收的模型，在牙齿的中部和牙齿远端或远端方向的中央部分中发现了应力浓度区域。但是，对于从肺泡吸收的舌侧加权的模型，找不到应力浓度。同样，对于从颊侧和室内或远端方向加权的模型，找不到应力集中。

项目成果

三次元有限要素応力解析による下顎小臼歯歯槽骨吸収に関する研究

基于三维有限元应力分析的下颌前磨牙牙槽骨吸收研究

• 发表时间: 2009
• 期刊: 松本歯学 35巻
• 作者: 新村弘子;土屋総一郎;滝嶋博;大島和成;山下秀一郎
• 通讯作者: 山下秀一郎