激光实时全息法用于双尖牙受力分析的研究

Stress Analysis of Premolar Under Loading by Laser Real time Holographic Method

本文介绍了激光实时全息法用于双尖牙受力分析的研究。模型试验表明 :在双尖牙牙尖部位及牙颈部位有明显的应力集中 ,牙尖部位受力较大 ,牙颈部位次之 ,折裂大多从两牙尖的正中裂开 ,折裂方式与临床观察相吻合。本文对此进行了相应的分析 ,并对牙骨质剥落等问题提出防治的建议。

Study of the stress distribution of premolar under loading by laser real-time holographic method is introduced. The optical setup for the real-time holographic testing system is presented. The model experiments show that stress concentration occurs in the top and the neck of premolar. Most of the cracks occurs in the center part between the two tops of tooth, and the way of fracture is in agreement with the results of clinical observation. These phenomena are analyzed and some suggests for prevention and cure of dentine peeling off are given.