Journal of the Korean Academy of Pediatric Dentistry 2008;35(4):652-661.
Published online November 30, 2008.
TREATMENT EFFECTS OF FRANKEL FUNCTIONAL REGULATOR Ⅲ IN MIXED DENTITION CHILDREN WITH ANTERIOR CROSSBITE
Jeung-Ah Park, Kyu-Ho Yang, Nam-Ki Choi, Seon-Mi Kim
Department of Pediatric Dentistry, School of Dentistry, Chonnam National University and Dental Research Institute and second stage of BK 21 
혼합치열기 전치부 반대교합 아동에서 Frankel functional regulator Ⅲ의 치료효과
박정아, 양규호, 최남기, 김선미
전남대학교 치의학전문대학원 소아치과학교실 및 치의학연구소 및 2단계 BK21
Correspondence:  Kyu-Ho Yang,  Tel: 062-530-5668, Email: hellopedo@hanmail.net
Received: 1 April 2008   • Accepted: 29 August 2008
Abstract
The purpose of this study was to evaluate the skeletal and dental effects obtained by the Frankel functional regulator Ⅲ in growing children with Class Ⅲ malocclusions. Cephalometric changes in thirty children at the time of mixed dentition malocclusions (initial mean age, 7.9 ± 1.1 years; mean treatment duration, 1.5 ± 0.8 years) were analysed. The results were as follows : 1. The skeletal effects on the maxilla showed a significant downward displacement whereas forward displacement was not significant in comparison with the control group. 2. The skeletal effects on the mandible showed statistically significant backward and downward displacement. 3. The dental effects showed statistically significant backward movement in the mandibular incisor tip and increase of overjet The results suggested that forward displacement on the maxilla was insufficient and treatment effects were caused mainly by downward displacement of the maxilla, backward and downward rotation of the mandible, and the increase of overjet during short period.
Key Words: Anterior crossbite, Fr¨ankel functional regulator Ⅲ, Skeletal effects, Dental effects


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