A Study on the Effects of Occlusal Stabilization Splint on Electromyographic Activity

교합안정장치의 장착이 저작근 활성도에 끼치는 영향에 관한 연구

  • Min Shin (Dept of Oral Diagnosis and Oral Medicine, School of Dentistry, Wonkwang National University) ;
  • Kyung-Soo Han (Dept of Oral Diagnosis and Oral Medicine, School of Dentistry, Wonkwang National University)
  • Published : 1989.03.01

Abstract

The author studied the changes of muscle activity with Bioelectric processor Model EM2(Myotronics Corp., USA) before and after occlusal stabilization splint therapy. For this study, 15 temporomandibular disorders patients and 15 students without any temporomandibular disorders symptoms were selected, for experimental group and control group, respectively. Experimental group were treated with occlusal stabilization splint and checked about electromyographic activity before and after therapy. Electromyographic levels were measured in both groups at the following mandibular position, i.e., physiologic rest, tapping, light biting, hard open without pain, open with pain, right excursion and ipsilateral biting, left excursion and ipsilateral biting, protrusion, protrusive biting, edge biting and physiologic rest after movement. The obtained results were as follows : 1. In experimental group, post-treatment mean values of muscle activity were lower than pretreatment values. 2. In general, the pre-treatment mean values of muscle activity in experimental group were higher than those of control group. 3. In experimental group, no statistically significant difference appeared between affected and unaffected side. 4. The mean value of muscle activity in physiologic rest position after each movement check was lower than that before each movement check.

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