The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

THE INFLUENCE OF OCCLUSAL CHANGE ON THE MASTICATORY MUSCLE ACTIVITY

교합접촉의 변화가 저작근 활성도에 미치는 영향에 관한 연구

  • Mun, Sang Bin (Department of prosthodontics, School of Dentistry, WonKwang University) ;
  • Yoon, Min Eui (Department of prosthodontics, School of Dentistry, WonKwang University) ;
  • Jin, Tai Ho (Department of prosthodontics, School of Dentistry, WonKwang University)
  • 문상빈 (원광대학교 치과대학 보철학교실) ;
  • 윤민의 (원광대학교 치과대학 보철학교실) ;
  • 진태호 (원광대학교 치과대학 보철학교실)
  • Published : 1990.12.01
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Abstract

This study was performed to investigate the influence of occlusal change on the masticatory muscle activity. 8 students without any symptom of T.M.J. dysfunction, any history of prosthodontic or orthodontic treatment on dental college of WonKwang Univ. were participated in this study. The activity of masseter and anterior temporal muscles were measured by bioelectric processor(EM2, Myotronics, Inc., U.S.A.) during voluntary maximal clenching on natural teeth, by splint with bilateral posterior surface contact, by splint with unilateral posterior surface contact, and by splint without unilateral posterior teeth contact. The obtained results were as follows ; 1. The loss of posterior contact on noe side resulted in change of the activity of anterior temporal and masseter muscle during clenching on ipsilateral side, but there was no change of muscle activity on contralateral side. 2. The activity of anterior temporal and masseter muscle during clenching were not affected by the pattern of occlusal contact. 3. There were no difference between the activity of anterior temporal and masseter miuscle during clenching by natural teeth and by occlusal splint.

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