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유한요소 분석을 통한 심미적 교정 브라켓의 응력 및 구조분석에 관한 연구

Other Titles
 STRESS DISTRIBUTION IN ESTHETIC ORTHODONTIC BRACKETS : AN ANALYSIS USING THE FINITE ELEMENT METHOD 
Authors
 이원유  ;  안주삼  ;  박영철  ;  박명균  ;  손홍범  ;  정시동 
Citation
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.28(1) : 43-49, 1998 
Journal Title
 Korean Journal of Orthodontics (대한치과교정학회지) 
ISSN
 2234-7518 
Issue Date
1998
Abstract
The aim of this study were to measure and compare the stress level on three type brackets and each other material (stainless steel, ceramic) with tipping and torquing forces by using the finite element analysis and to design biomechanically favorable brackets. For this study, three kinds of brackets were selected(A:Transcend-RMO, B:Signature-Unitek, C:PAW: plain archwire appliance-applied for a patent in Yonsei Udiversity). The slot size of bracket was 0.022inch and the size of archwire was 0.0175x0.025inch and taper shaped archwire was used in PAW. Loading force in tipping was 4.27N and torquing force was 32.858N applied by archwire torsion with 19.7degree and 11.3 degree in C type bracket. The conclusions were that (1) The finite element method proved to be a useful tool in the stress analysis of orthodontic bracket subjected to various forces. (2) With tipping, the stresses were concentrated at the gingival wall of the wire slot where it meets the mesial bracket surface and the incisal wall of the wire slot where it meets the distal bracket surface and with torquing, the stresses were concentrated at the junction of the gingival or incisal wall and base of the slot. (3) The maximum stress value was higher in torquing force than tipping force and therefore it is desirable to design on the basis of torquing force. (4) It was considered that the change in material might be affect on the diminish of stress value in the place of stess concentration. (5) The maximum stress value was highest on PAW bracket when the tipping and torquing force was applied and therefore it would be desirable to use mechanically favorable material on PAW bracket.
Files in This Item:
T199802811.pdf Download
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Park, Young Chel(박영철)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176943
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