下顎正中結合과 下顎切齒의 成長變化에 關한 累年的 硏究

• 영문명: A LONGITUDINDAL STUDY OF GROWTH CHANGE ON THE MANDIBULAR SYMPHYSIS AND LOWER INCISORS
• 발행기관: 대한치과교정학회
• 저자명: 沈元燮(Won Sub Shim) 鄭圭林(Kyu Rhim Chung) 李起受(Ki Soo Lee)
• 간행물 정보: 『The Korean Journal of Orthodontics』제17권 제1호, 73~83쪽, 전체 11쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1987.06.30

영문 초록

The purpose of this longitudinal study was to examine the growth changes of mandibular symphysis and lower incisors with age. The material was 294 lateral cephalometric radiographs taken longitudinally from 6 to 13 year old children, who were not teated orthodontically. The following conclusions seem to be warranted. 1. The sex difference of the measurements of mandibular symphysis and lower incisors were not statistically significant. 2. There were growth increments (2.69mm in boys and 2.08mm in girls) in the total thickness of mandibular symphysis. 3. There were a great change and individual variations on the curvature of anterior border of mandibular symphysis. 4. The chin angle had a tendency to decrease progressively in both sexes. 5. There were growth increments (8.23mm in boys and 7.40mm in girls) in the anterior dental height. 6. The lower anterior teeth tended to incline labially with age.