Clinical study on occlusion in edentulous patients with implant supported complete denture

本研究的目的是评估种植义齿患者的咬合力分布。首先，我们关注静力分布。18名自然有齿志愿者和18名无牙合种植支持全口义齿患者参与了这项研究。种植体组的咬合力和咬合面面积均明显小于对照组。左右两侧的平均咬合压力和咬合力平衡无明显差异。种植体组牙合力中心位置较对照组前移。两组间的AI差异无统计学意义。为了测量功能分布，在种植基牙放置应变片的情况下，建立了三维评价系统，并对两名种植义齿患者进行了初步研究。为了分析不同文字食物的咀嚼运动，各种类型的冠形将在未来的某一天改变。

The purpose of this study was to evaluate the occlusal force distribution in patients with implant supported prostheses. First of all, we focus attention on static force distribution.Eighteen natural dentate volunteers and eighteen edentulous patients with osseointegrated implant-supported complete denture participated in this study. Occlusal force and area in implant group were significantly smaller than those in control group. No significant differences were seen in mean occlusal pressure and occlusal force balance between left and right sides. The central position of occlusal force in implant group was more anterior than that in control group. There was no significant difference between two groups in AI.For measurement of the functional force distribution, a three-dimension evaluation system was developed with a strain gauge placed in implant abutment, and the pilot study was conducted in two patients with implant-supported prostheses. The various types of the crown form will been changed for analysis of chewing movement with difference text food in some future day.