Korean Journal of Cleft Lip And Palate (대한구순구개열학회지)

Korean Cleft Lip and Plate Association (대한구순구개열학회)
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Analysis of the resistant muscle force against distraction in the maxilla-facial deformities

악안면 기형환자에서 내측 익돌근 근력측정 및 의미분석

  • Choung Pill-Hoon (Department of oral and maxillofacail surgery, College of dentistry, Seoul national university) ;
  • Hong Jong-Rak (Department of oral and maxillofacail surgery, College of dentistry, Seoul national university) ;
  • Bae Yong-Chul (Department of oral anatomy, School of dentistry, Kyungpook University)
  • 정필훈 (서울대학교 치과대학 구강악안면외과학 교실) ;
  • 홍종락 (서울대학교 치과대학 구강악안면외과학 교실) ;
  • 배용철 (경북대학교 치과대학 해부학교실)
  • Published : 2001.12.01
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Abstract

Recents reports have demonstrated that force and direction is important during mandibular distraction osteogenesis. The purpose of this study was to evaluate the resistant force of internal pterygoid muscles and inquire into relationship between internal pte'Ygoid muscles and cephalometric parameters. Eighty four patients with class III malocclusion underwent bilateral sgittal splitting of ramus with intraoral vertico-sagittal ramal osteotomy. A spring scale were used for measuring for resistence of internal pterygoid mescles after splitting of ramus. Skeletal-dental cephalometric analysis was made following statistic package was used for correlation between resistence and cephalometric parameters. The resistant force of right internal pterygoid muscle was greater than left muscle in Korean with class III malocclusion and the force had a linear regression relationship with facial depth (distance between nasion and gonion). The results suggested that facial depth has significant correlation of the resistance of internal pterygoid muscle (p<0.05).

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