Development of Pain Threshold Measurement System of masticatory Muscles for TMI

我们研制了一种新的测量咀嚼肌和咀嚼囊PPT的装置。在这项研究中，我们开发了新的仪器，并讨论了它的精度。为确定正常受试者PPT的正常范围，对20例正常受试者进行了PPT测定。为评价TMD患者的PPT，20例TMD受试者进行了PPT测定。为评估有无TMD患者的PPT变化，20例正常人和20例TMD患者进行了PPT测定。结果如下：1.女性组咬肌浅层、颞前肌、外囊的PPT值显著低于男性组。2.日本男性咀嚼肌PPT正常值为2.8~2.9kgf/cm~2。女性PPT值在1.3~1.8kgf/cm2之间。3.性别差异显著。4.TMD组咬肌浅层、颞前肌、侧囊的PPT值均低于对照组。2.TMD组的侧囊PPT与对照组比较差异有统计学意义。

We developed a new apparatus to meaesure PPT of masticatory muscles and capsule. In this study, we developed the new apparatus and discussed the accuracy of it. To determine the normal range of PPT in normal subjects, 20 normal subjects were measured their PPT.To evaluate the PPT in TMD patients, 20 TMD subjects were measured their PPT.To evaluate whether or not PPT changes occur in subjects with and without temporomandibular disorders (TMD), 20 normal subjects and 20 TMD patients were measured their PPT.The results obtained as follows :1.The PPT values of superficial masseter, anterior temporalis, and lateral capsule in the female group were significantly lower than those in the male group.2.The normal PPT value of masticatory muscles in Japanese was 2.8-2.9kgf/cm^2 in male, and 1.3-1.8kgf/cm^2 in female.3.There was obvious gender difference in the PPT.4.The PPT values of superficial masseter, anterior temporalis, and lateral capsule in the TMD patient group were lower than those in the control group.2.There was significantly difference between the TMD patient group and the control group in the PPT of lateral capsule.