학술논문
정형력에 대한 하악골내의 응력분산과 변위에 관한 유한요소법적 분석
이용수 3
- 영문명
- A Finite Element Analysis of the Stress Distribution and Displacement of an in-vitro Human Mandible to the Orthopedic Force
- 발행기관
- 대한치과교정학회
- 저자명
- 조호구(Ho-Koo Choue)
- 간행물 정보
- 『The Korean Journal of Orthodontics』제14권 제1호, 75~92쪽, 전체 18쪽
- 주제분류
- 의약학 > 기타의약학
- 파일형태
- 발행일자
- 1984.06.30
무료
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국문 초록
영문 초록
This study attempted to analyze the distribution of stress, to examine the bending effect in the mandible according to the pulling directions and determine on which pulling directions are adequate when an orthopedic force was applied to the mandible. An orthopedic force, 500gm, was applied to the gnathion, one point of the chin area, in three directions. The three directions were; high pull, from gnathion to the center of condyle head, and vertical pull, from gnathion to a parallel line with the posterior border of the ramus, and medium pull, from the gnathion to a parallel line with the lower border of mandible. The distribution of principal stress, bending moment and amount of displacement within the mandible was analyzed by a 3-dimensional finite element method and that of the various portions of mandible were computed and compared according to the pulling directions. The results were as follows: 1. The bending moment of each part of a mandible has been found to be markedly larger in case of vertical pull than in case of either high pull or medium pull. In vertical pull the bending moment turned out to largest at the condyle head and neck portion, the gonial angle portion, the coronoid portion and the ascending ramus portion, respectively, while comparatively large at the cuspid and bicuspid portion and the first molar portion. In case of high pull it was largest at the gonial angle portion and becoming smaller at the coronoid portion, the ascending ramus portion, the condyle head and neck portion, and the cuspid and bicuspid portion, in that order. In case of medium pull, however, the bending moment was largest at the condyle head and neck portion, becoming smaller at the first molar portion, the ascending ramus portion, the coronoid portion, the cuspid and bicuspid portion, and gonial angle portion, in that order. 2. As for the bending effect it was calculated to be mostly oriented downward at the mandibular body and backward at the mandibular ramusin both high pull and vertical pull. In case of medium pull it was oriented upward at the mandibular body and forward at the mandibular ramus. 3. The bending effect also turned out to be mostly oriented outward in case of high pull and medium pull, and inward in vertical pull. 4. At the mandibular body and ramus, the bending effect in the upward-downward direction and that in the forward-backward direction were found to be larger than in the inward-outward direction. 5. If and when we expect any correcting effect on the mandibular protrusion by means of the chin cup appliance, we can say sure as conclusion that high pull and vertical pull are more effective than medium pull.
목차
키워드
해당간행물 수록 논문
- 정형력에 대한 하악골내의 응력분산과 변위에 관한 유한요소법적 분석
- Cephalogram분석에 의한 부정교합자 치료전후의 연조직 측모변화에 관한 연구
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- 백서교근의 변형에 따른 악관절부의 병리조직학적 연구
- Collagenase가 백서치아이동 후 복귀현상에 미치는 효과에 관한 조직화학적 연구
- 구치의 근원심 경사도에 관한 두부방사선계측학적 연구
- 편측성 순, 구개렬자의 상악치렬궁 및 구개에 관한 연구
- 편측성 순렬 및 구개렬환자의 안면형태와 성장에 관한 연구
- Preformed Arch Wire 제작을 위한 한국인 정상교합자의 치례궁형태에 관한 연구
- 한국 성인 정상교합자의 악안면 정상치에 관한 두부방사선 계측학적 연구
- 한국인 부정교합 발생빈도에 관한 역학적 연구
- 실험적 치아이동시 견인측 치주조직에 미치는 영향에 관한 전자현미경적 연구
- 모와 자녀간 부정교합의 유전성에 관한 연구
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