The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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A CEPHALOMETRIC STUDY ON THE POSITION OF THE HYOID BONE IN CLEFT LIP AND PALATE INDIVIDUALS

순구개열자의 설골 위치에 관한 두부방사선 계측학적 연구

  • Cho, Il Je (Department of Orthodontics, College of Dentistry, Pusan National University) ;
  • Rhee, Byung Tae (Department of Orthodontics, College of Dentistry, Pusan National University)
  • 조일제 (부산대학교 치과대학 교정학교실) ;
  • 이병태 (부산대학교 치과대학 교정학교실)
  • Published : 1990.03.30
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Abstract

This comparative study was undertaken to investigate the position of the hyoid bone in unilateral cleft lip and palate individuals. The materials for this study consisted of 35 subjects with surgically repaired unilateral cleft lip and palate (25 males, 10 females) and 40 subjects with normal facial morphology (20 males, 20 females). Cephalometric measurements of unilateral cleft and palate individuals were compared with those of non-cleft individuals. The conclusions of this study were obtained as follows: 1. To the anterior cranial base, the hyoid bone in unilateral cleft lip and palate individuals was located downward as compared with non-cleft individuals. 2. To the mandible, the hyoid bone in unilateral cleft lip and palate individuals was located backward as compared with non-cleft individuals. 3. The distance between the dorsum of the tongue and the inferior border of the hard palate in unilateral cleft lip and palate individuals was longer than that in non-cleft individuals. 4. Unilateral cleft lip and palate individuals showed no significant difference in the distance between the hyoid bone and the dorum of the tongue as compared with non-cleft individuals.

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