Biomechanical investigation of occlusio n on Implants-supporting Fixed Prostheses

研制了由压电式力传感器和实验上层结构组成的三维载荷测量装置。用螺钉将器械紧固到受试者的种植体固定装置中。记录了最大自主咬合（MVC）和咬一块石蜡（WAX）过程中的三维载荷。在基于她的法兰克福和矢状面的空间坐标中分析记录的载荷的大小和方向。该装置使我们能够估计植入物上的3-D载荷。咀嚼时种植体支撑固定上部结构的载荷大于咬牙时的载荷。咀嚼过程中载荷方向的变化量大于咀嚼过程中的变化量。结果表明，牙齿种类或咬合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