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금속도재관으로 수복된 Abfraction lesion이 있는 치아에 가해지는 교합력의 응력 분포 분석

Other Titles
 Analysis of stress distribution of tooth restored with metal-ceramic crown covering abfraction lesion according to its finish line location under occlusal load 
Authors
 김지환  ;  윤철욱  ;  김태현  ;  김한성  ;  우대곤  ;  이근우  ;  심준성 
Citation
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.52(4) : 305-311, 2014 
Journal Title
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지) 
ISSN
 0301-2875 
Issue Date
2014
Keywords
Abfraction ; Metal-ceramic crown ; Finish line ; Stress distribution ; Finite element analysis
Abstract
PURPOSE. When the full veneer crown was treated in the tooth with abfraction lesion due to various causes, the prognosis of it may be compromised according to the location of the finish line, but there is few study about the location of its buccal finish line. The purpose of this study was to investigate the effect of location of the finish line of the full veneer crown on stress distribution of the tooth with abfraction lesion. MATERIALS AND METHODS. The two dimensional finite element model was developed to express tooth, surrounding tissue and full veneer crown. The stress distribution under eccentric 144 N occlusal load was analyzed using finite element analysis. The location of finish line was set just at the lower border of the lesion (Group 0), 1 mm (Group 1) and 2 mm (Group 2) below the lower border of the lesion. RESULTS. In the Group 0, von Mises stress was concentrated at the finish line and the apex of the lesion. Also, the stress at the bucal finish line propagated to the lingual side. In the Group 1 and Group 2, stress distribution was similar each other. Stress was concentrated at the apex of lesion, but the stress at the buccal finish line did not propagate to the lingual side. That implied decrease of the possibility of horizontal crown fracture. CONCLUSION. Full veneer crown alleviated the stress concentrated at the apex of the abfraction lesion, when the finish line of full veneer crown was set below the lower border of abfraction lesion.
Files in This Item:
T201405964.pdf Download
DOI
10.4047/jkap.2014.52.4.305
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jee Hwan(김지환) ORCID logo https://orcid.org/0000-0002-0872-4906
Shim, June Sung(심준성) ORCID logo https://orcid.org/0000-0003-1428-0122
Lee, Keun Woo(이근우) ORCID logo https://orcid.org/0000-0002-3153-190X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/139019
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