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교정용 미니스크류를 이용한 하악 전치 함입 시 변위양상의 3차원 유한요소분석

Other Titles
 3-D FEA on the intrusion of mandibular anterior segment using orthodontic miniscrews 
 박현경  ;  성의향  ;  이기준  ;  전윤식  ;  모성서  ;  조영수 
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.41(6) : 384-398, 2011 
Journal Title
 Korean Journal of Orthodontics  (대한치과교정학회지) 
Issue Date
Objective: The purpose of this study was to analyze the stress distribution and the displacement pattern of mandibular anterior teeth under various intrusive force vectors according to the position of orthodontic miniscrews and hooks, using three-dimensional finite element analysis. Methods: A three-dimensional finite element model was constructed to simulate mandibular teeth, periodontal ligament, and alveolar bone. The displacement of individual tooth on three-dimensional planes and the von Mises stress distribution were compared when various intrusion force vectors were applied. Results: Intrusive forces applied to 4 mandibular anterior teeth largely resulted in remarkable labial tipping of the segment according to the miniscrew position. All 6 mandibular anterior teeth were labially tipped and the stress concentrated on the labiogingival area by intrusive force from miniscrews placed mesial to the canine. The distointrusive force vector led to pure intrusion and the stress was evenly distributed in the whole periodontal ligament when the hook was placed between the central and lateral incisors and the miniscrew was placed distal to the canine. Conclusions: Within the limits of this study, it can be concluded that predictable pure intrusion of the 6 anterior teeth segment may be accomplished using miniscrews placed distal to the canine and hooks located between the central and lateral incisors.
Appears in Collections:
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실)
Yonsei Authors
이기준(Lee, Kee Joon)
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