설과 구순의 기능압이 전치부 교합형태에 미치는 영향

• 영문명: The Effect of Functional Pressures of the Tongue and Lips on the Incisor Relationship
• 발행기관: 대한치과교정학회
• 저자명: 정현수(Huyun Soo Chung) 이기수(Ki-Soo Lee)
• 간행물 정보: 『The Korean Journal of Orthodontics』제13권 제1호, 15~30쪽, 전체 16쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1983.06.30

영문 초록

This study was to investigate the effect of functional pressures of the tongue and lips on the incisor relationship. The incisor relationship was divided into two categories; one is vertical relationship which is subdevided into open bite, normal overbite and deep bite no the basis of overbite, and the other is anteroposterior relationship which is subdevided into cross bite, normal overjet and large overjet on the basis of overjet. The functional tongue and lip pressures exerted to incisors were measured with subminiature pressure sensor form the 99 subjects, 19 of normal overbite and overjet, 26 of open bite, 18 of deep bite, 17 of cross bite and 19 of large overjet with age of 17-20, and cephalograms were taken from the same subjects. Functional pressures were analyzed and correlated to craniofacial veriables. The results of pressent investigation led to the following conclusions. 1. There were no difference in functional and maximum pressures by the tongue and lips exerted to maxillary incisors between normal occlusion, open bite, deep bite, cross bite and large overjet. 2. Significant differences in functional and maximum pressures by the tongue and lips exerted to mandibular incisors have been shown to exist between open bite deep bite, but no differences between cross bite and large overjet. 3. Equilibrium between tongue pressures and lip pressures did not exist. 4. Significant differences in the ratio of upper functional and maximum pressures to lower pressures of the tongue and lips exerted to upper and lower incisors have been shown to exist between open bite and deep bite, and no differences between cross bite and large overjet. 5. There was significant correlation between functional and maximum pressures exerted to mandibular incisors and craniofacial variables, but not significant correlation between funetional and maximum pressures exerted to maxillary incisors and craniofacial variables.