To study the function of the superior head of the human lateral pterygoid muscle (SLpt) we have divised an inserting method with resin splint. The method is based on the anatomical mean value. The aim of this study was to explain and discuss the method.
Using this method we have recorded EMGs of SLpt 40 times in 29 subjects.
The results were as follows:
1. Accidents like hematoma or bleeding didn't occur.
2. 90% of subjects could be placed EMG electrodes correctly only once.
3. We could easily record reproducible EMG of SLpt.
From these findings it is suggested that this method is usefull to investigate the fundamental property of SLpt and to diagnose the patients with craniomandibular dysfunction.
