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교모면적과 저작근 활성도와의 관계에 대한 연구
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  • 교모면적과 저작근 활성도와의 관계에 대한 연구
  • A Study on the Relationship between Occlusal Wear Facet areas and Masticatory Muscle Activities
저자명
김정희,윤창근,Kim. Joung-Hee,Yoon. Chang-Keun
간행물명
대한치과보철학회지
권/호정보
1987년|25권 1호|pp.269-279 (11 pages)
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대한치과보철학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The purpose of this study was to obtain basic data needed to clinical diagnosis and treatment by investigating the occlusal wear facets and those related factors. Sixty-six subjects, ranging from 24 to 26 years of age without symptoms of stomatognatic system, were selected from dental students in Chosun University. The area of occlusal wear facets was measured and twenty subjects were selected, and divided into two groups (Group I and Group II). The Group I had small facet areas, and the Group II had large facet areas. These two groups were investigated into right and left side wear facet areas, vertical overlaps, occlusion types of working side, masticatory muscle activities, and asymmetry of right and left side masticatory muscle function. The results were as follows: 1. The average wear facet areas of all subjects was $22.84{pm}88.95mm^2$, and Group I and Group II were $96.12{pm}32.00mm^2$ and $372.94{pm}65.63mm^2$ respectively. 2. The right and left wear facet areas of Group I were $46.72{pm}14.36mm^2$ and $49.40{pm}21.46mm^2$ respectively. The right and left wear facet areas of Group II were $175.27{pm}45.75mm^2$ and $185.69{pm}45.37mm^2$ repsectively. 3. The vertical overlap of Group I and Group II was $3.88{pm}0.81mm$ and $2.88{pm}1.14mm $ respectively. 4. Most of the Group I had Canine protection occlusion (80%), and most of the Group II had Group function occlusion (80%). 5. The masticatory muscle activities at rest position, maximum bite, habitual chewing, right and left unilateral chewing were greater in Group II than in Group I, especially in the masseter muscle of working side at right and left unilateral chewing. (P<0.01). 6. The asymmetry of right and left wear facets and masticatory muscle activities were greater in Group II than in Group I. (P<0.01).