학술논문
한국성인 정상교합자에서 Delaire의 이상적 교합평면과 저작근 근활성도와의 관계에 대한 연구
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- 영문명
- A STUDY ON THE RELATION BETWEEN DELAIRE’S IDEAL OCCLUSAL PLANE AND MASTICATORY MUSCLE ACTIVITY IN KOREAN NORMAL ANGLE CLASS I OCCLUSION INDIVIDUALS
- 발행기관
- 대한구강악안면외과학회
- 저자명
- 변성규(Seong Kyu Byun) 이충국(Choong Kook Yi)
- 간행물 정보
- 『대한구강악안면외과학회지』대한구강악안면외과학회지 제26권 제3호, 229~237쪽, 전체 9쪽
- 주제분류
- 의약학 > 내과학
- 파일형태
- 발행일자
- 2000.06.30
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국문 초록
영문 초록
According to the functional matrix theory, Delaire proposes that individual occlusal plane was determined by variable effects of teeth, maxilla, mandible, cranium, cranial base and soft tissue matrix including the orofacial musculature. and that there is the ideal occlusal plane determined by the most proper spatial position of maxilla and mandible, functionally and esthetically.
This study was designed to find out the relation between Delaire’s ideal occlusal plane and muscle activity of masticatory muscles in individuals who have normal maxillo-mandibular relationships. Lateral cephalometric radiographs were taken and his/her individual occlusal plane and ideal occlusal plane were analyzed with Delaire’s architectural and structural craniofacial analytic method. For evaluation of muscle activities of masticatory muscles, electromyography of anterior temporal muscle, superficial masseter muscle, and anterior belly of digastric muscle was recorded in fifty Korean normal Angle class I occlusion individuals. According to the average value of ideal occlusal plane, fifty normal Angle class I occlusion individuals were classified into three groups: Ideal occlusal plane group(I group), hyperrotation group(I+ group) and hyporotation group(I- group). The result of this study was as follows:
1. The results of Delaire’s architectural and structural craniofacial analysis of lateral cephalography of the fifty Korean normal Angle class I occlusion individuals are that twelve persons(24%) have consistent or parallel with ideal occlusal plane and the average of angular difference was 1.22˚±3.69˚.
2. There is no significant difference in muscle activities of masticatory muscles during resting(p<0.05), but significant increases of muscle activity of ipsilateral anterior temporal and masseter muscle, contralateral anterior belly of digastric muscle during unilateral chewing and of anterior temporal and masseter muscle during bilateral clenching(p<0.05).
3. To find out the effect of the angular difference between Delaire’s ideal occlusal plane and real occlusal plane to muscle activity, muscle activities of masticatory muscles were compared with three groups in each other; I group, I+ group and I- group. The results were no significant differences during resting, unilateral chewing and bilateral clenching.(p>0.05)
4. Although there is no significant differences of masticatory muscle activities among the three groups, the fact that increasing tendency of masseter muscle activity of ideal occlusal plane group(I+) than those of any other groups(I+ and I-) during bilateral clenching was noted. There is only the implication that occlusal plane makes some effects on masticatory muscle activities, espacially that of masseter muscle during bilateral clenching.
In conclusion, the hypothesis that occlusal plane is one of the factors which affect the muscle activities of masticatory muscles and that anyone whose occlusal plane consistent with Delaire’s ideal occlusal plane has an extraordinary functional advantage in masticatory muscle function cannot be proven with electromyography methods.
목차
Abstract
Ⅰ. 서론
Ⅱ. 연구대상 및 연구 방법
Ⅲ. 연구성적
Ⅳ. 총괄 및 고찰
Ⅴ. 결론
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