Biomechanical investigation of occlusio n on Implants-supporting Fixed Prostheses

研制了由压电力传感器和实验上部结构组成的三维载荷测量装置。这些装置用螺钉固定在受试者体内的植入装置上。记录了最大自主咀嚼（MVC）和咬一口石蜡（wax）过程中的三维载荷。在她的法兰克福面和矢状面空间坐标上分析了记录载荷的大小和方向。这个装置使我们能够估计植入物上的三维载荷。咀嚼时支撑固定上部结构的种植体承受的载荷大于咬合时承受的载荷。咀嚼过程中负荷方向的变化量大于咀嚼过程。结果表明，牙的种类和齿间接触对载荷方向有影响

The 3-D load-measuring device, comprised of a piezo-electric force transducer and the experimental superstructure, was developed. The devices were tightened with screws into implant-fixtures in the subjects. The 3-D loads during the maximum voluntary cenching (MVC)and biting a piece of paraffin wax (WAX)were registered. The magnitude and direction of the recorded loads were analyzed in the spatial coordinates based on her Frankfort and sagittal planes. The device enabled us to estimate the 3-D loads on t he implants. Load exerted on the implant supporting fixed superstructure during chewing function was larger than that during clenching. The amount of change in the load direction during chewing was larger than that during chewing. It was suggested that the species of teeth or occulusal contact was affect the load direction