A cephalometric comparison of Skeletal Class III malocclusion and Cleft lip and palate patients

골격성 제 III급 부정교합환자와 구순구개열환자의 두부방사선계측치의 비교

  • Baik Hyoung-Seon (Department of Orthodontics, College of Dentistry, Yonsei University) ;
  • Yu Hyung-Seog (Department of Orthodontics, College of Dentistry, Yonsei University) ;
  • Jeon Jai-min (Department of Orthodontics, College of Dentistry, Yonsei University)
  • 백형선 (연세대학교 치과대학 교정학교실) ;
  • 유형석 (연세대학교 치과대학 교정학교실) ;
  • 전재민 (연세대학교 치과대학 교정학교실)
  • Published : 2003.12.01

Abstract

A cephalometric study was performed to reveal differences between skeletal Class III malocclusion patients and cleft lip and palate patients, The material for this study consisted of 16 males (mean age 19.8, range 17-29) and 9 females(mean age 19.4, range 16-27) with cleft lip and palate, and 222 Skeletal Class III malocclusion patients(males 106, females 116), Cephalometric tracing and measurements were done by one investigator. Results were followed: 1. Cleft lip and palate group had more retrusive maxilla than the skeletal Class III malocclusion group. 2, Cleft lip and palate group had smaller effective maxillary and mandibular length than skeletal Class III malocclusion group, and the difference was more prominent in the mandible than in the maxilla. 3. Dental compensation was not observed in the upper incisors of cleft lip and palate group and in the lower incisors it was smaller than skeletal Class III group. 4, In the Gonial angle and lower anterior facial height values, there was no significant difference between cleft lip and palate and skeletal Class III malocclusion group. These results can be used in orthodontic treatment planning and orthognathic surgery for the cleft lip and palate patients.