A clinical and experimental study of the biomechanical factors associated with tooth destruction

本课题旨在探讨咬合力对牙齿非龋损和龋损发生的影响。应变计将被粘在拔牙和口腔中牙齿的颈部区域，施加在牙齿咬合表面的力，以及由此产生的应力将由应变计测量。将使用仿形技术和高倍显微镜来确定由于在酸存在的情况下施加力而导致的牙齿结构损失的量。此外，还将生成一个计算机模型，以确定它是否可以用于预测应力。在一项临床研究中，将对有无龋损的患者进行为期三年的随访，以评估牙齿结构的形态变化并测量发生的体积损失。

This project investigates the influence of biting force on the development of non-carious and carious defects of teeth. Strain gauges will be cemented to the neck region of extracted teeth and teeth in the mouth, forces applied to the biting surfaces of the teeth, and the stress which results will be measured by the strain gauge. A profiling technique and high-power microscopy will be used to determine the amount of tooth structure lost as a result of applying the forces in the presence of acid. In addition, a computer model will be generated, to determine whether it can be used to predict the stresses. In a clinical study, patients with and without non-carious defects will be followed for three years in order to assess the morphological changes and measure the volume loss of tooth structure which occurs.