The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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A STUDY ON THE EFFECT OF RAPID MAXILLARY EXPENSION AND ITS RELAPSE

상악골 확장과 재발에 관한 연구

  • Lee, Young-Il (Department of Orthodontics, College of Dentistry, Dan Kook University) ;
  • Cha, Kyung-Suk (Department of Orthodontics, College of Dentistry, Dan Kook University)
  • 이영일 (단국대학교 치과대학 교정학교실) ;
  • 차경석 (단국대학교 치과대학 교정학교실)
  • Published : 1991.07.01
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Abstract

This research was carried out in order to study the effects of Rapid Maxillary Expansion on maxilla and it's surrounding skeletal structures. The sample for this study consists of 14 patients who were in retention period after rapid maxillary expansion. Following results were obtained after performing comparative analysis of cephalograms taken before and after rapid maxillary expansion. 1. In almost every cases, inferior displacement of palatal planes with concurrent changes in their inclination were observed. 2. Changes in the inclination of palatal plane can be categorized into inferiorty inclined group, superiorly inclined group and constant group in relation to the states before rapid masillary expansion. 3. Decrease in < Se-FMN/PMV and increase in < Se-FMN-A were evident in the superiorly inclined group and vice versa for the inferiorly inclined group.

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