Shi S G, Guan O Y, Zhang C F
Department of Prosthodontics, College of Stomatology, Fourth Military Medical University, Xi'an, China.
J Prosthet Dent. 1993 Feb;69(2):171-5. doi: 10.1016/0022-3913(93)90137-d.
The mean voltages of the masseter and anterior temporal muscles of 30 Chinese edentulous patients were recorded in centric relation and protrusive positions (from 1 mm to 4 mm anterior to centric relation) under two given occlusal force conditions. It was found that the mean ratio of individual voltages of the anterior temporal muscles to the masseter muscles was equal to or greater than 1.2 in centric relation, but the ratio was less than 1.2 in protrusive positions in most of the subjects. The results demonstrated that the ratio of voltages of the anterior temporal muscles to masseter muscles may be a reliable parameter for distinguishing centric relation from protrusion in Chinese edentulous patients.
在两种给定的咬合力条件下，记录了30名中国无牙颌患者在正中关系位和前伸位（从正中关系位向前1毫米至4毫米）时咬肌和颞前肌的平均电压。结果发现，在正中关系位时，大多数受试者颞前肌与咬肌的个体电压平均比值等于或大于1.2，但在前伸位时该比值小于1.2。结果表明，颞前肌与咬肌的电压比值可能是区分中国无牙颌患者正中关系位和前伸位的可靠参数。
