Gibbs C H, Mahan P E, Lundeen H C, Brehnan K, Walsh E K, Holbrook W B
J Prosthet Dent. 1981 Oct;46(4):443-9. doi: 10.1016/0022-3913(81)90455-8.
Forces during the phase of occlusal contact during chewing and swallowing are surprisingly high (36.2% and 41%), about 40% of the subject's maximum biting force. Previous studies using transducers in fixed partial dentures measured only a portion of the total force and have given the impression that chewing forces are much less than the data reported in this study. The importance of occlusal stability in the intercuspal position is of utmost clinical significance. Steep anterior guidance does not appear to expose the teeth to extreme lateral forces. The gliding contacts of the teeth while entering and leaving the intercuspal position have been shown to be of short duration and low magnitude when compared with the forces generated in the intercuspal position. During chewing, the peak occlusal force occurred well after the peak EMG activity. EMG activity by itself does not directly correlate with the force generated during chewing. The sound transmission method for measuring interjaw force during chewing, which was developed as part of this project, proved to be practical for research purposes. No intraoral devices are required, and the time relationship to force is accurate to within 15 ms.
咀嚼和吞咽过程中咬合接触阶段的力量出奇地高（分别为36.2%和41%），约为受试者最大咬合力的40%。以往在固定局部义齿中使用传感器的研究仅测量了总力量的一部分，给人的印象是咀嚼力远低于本研究报告的数据。牙尖交错位咬合稳定性的重要性具有极其重要的临床意义。陡峭的前导似乎不会使牙齿承受极端的侧向力。与在牙尖交错位产生的力量相比，牙齿进出牙尖交错位时的滑动接触已被证明持续时间短且力量小。在咀嚼过程中，咬合力量峰值出现在肌电图活动峰值之后很久。肌电图活动本身与咀嚼过程中产生的力量并无直接关联。作为本项目一部分开发的用于测量咀嚼过程中颌间力的声音传输方法，被证明对研究目的而言是实用的。无需口腔内装置，且力量的时间关系精确到15毫秒以内。
