A Study on Occlusal Contacts of Complete Denture during Mastication

本研究的目的是开发一个遥测系统，并分析全口义齿在咀嚼过程中的咬合接触。遥测系统由一个带电池的发射单元和一个接收单元组成。发射器允许在大约2m的距离内通过时分复用通信方式远程输入6路咬合接触信息。上全口义齿的咬合面采用金属材料，下全口义齿的咬合面采用金属接触板，每个接触板宽度为0.5 mm，每个接触板间距为0.5 mm。发射器嵌在下牙义齿中。本文对66例老年无牙男性咀嚼侧和非咀嚼侧前磨牙区、第一磨牙区和第二磨牙区的咬合接触进行了研究。实验结果如下：1.实验结果表明：非咀嚼侧的咬合接触先于咀嚼侧，频率更高，持续时间更长。在非咀嚼侧，前板区咬合接触发生的时间不同；首先在第二磨牙区观察到咬合接触，然后在第一磨牙区观察到32-48 ms，在前磨牙区观察到2-48 ms。建议在全口义齿咀嚼时采用平衡接触来稳定义齿。

The purpose of this study was to develop a telemetry system and to analyze the occlusal contacts of complete denture during mastication.The telemetry system consisted of a transmitter unit with battery and a receiver unit. The transmitter allowed 6 channels of information of the occlusal contacts to be telementered by time division multiplex communication method within the approximate distance 2m.The occlusal surface of the upper complete denture was made of metal and that of the lower denture was made of metal contact plates of 0.5 mm in width each space of 0.5 mm. The the transmitter was embedded in the lower denture. Occlusal contacts of 66 aged edentulous male were invesigated both on the chewing side and on the nonchewing side in the premolar, the 1st molar and the 2nd molar regions.The results were as followed :1. The occlusal contacts in the nonchewing side preceded those in the chewing side, with higher frequency and longer durtion.2. In the nonchewing side, the occlusal contact of the premplar region occurred at different time ; the occlusal contact was observed first in the 2nd molar, then 32-48 ms later in the 1st molar, and 2-48 ms later in the premolar regions.3. It is suggested that the balancing contact should be considered for stabilizing the complete denture in masication.