The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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A STUDY ON THE MANDIBULAR GROWTH IN SURGICALLY REPAIRED UNILATERAL CLEFT LIP AND PALATE

편측성순구개열자의 하악골성장에 관한 연구

  • Park, Chun-Keun (Dept. of Orthodontics, College of Dentistry, Seoul National University) ;
  • Yang, Won-Sik (Dept. of Orthodontics, College of Dentistry, Seoul National University)
  • 박춘근 (서울대학교 치과대학 교정학교실) ;
  • 양원식 (서울대학교 치과대학 교정학교실)
  • Published : 1989.03.01
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Abstract

This study was undertaken to analyze the growth of mandible in surgically repaired unilateral cleft lip and palate. The subjects consisted of 63 unilateral cleft lip and palate individuals, 60 class III malocclusions and 60 normal occlusions ranging from 6 to 15 years old. Each group was divided into two age groups. (6-10 Y and 11-15 Y) The results obtained from UCLP compared with other groups were as follows: 1. The anteroposterior position of the chin was similar to that of the normal occlusions. 2. The shape of the mandible was similar to that of the class III malocclusions. 3. In mandibular size, ramus height was the smallest among three groups, but body length and overall mandibular length were similar to those of the normal occlusions. 4. The lower border of the mandible was the steepest among three groups and strong vertical or clockwise growth tendency was indicated. 5. The position of condyle in relation to the cranial base showed little difference in three groups. 6. In older age group , vertical growth tendency of the mandible decreased more or less.

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