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최적설계기법을 이용한 완전도재 가공의치의 연결부 형태보강

Other Titles
 THE OPTIMAL DESIGN OF CONNECTORS IN ALL CERAMIC FIXEDPARTIAL DENTURES MANUFACTURED FROM ALUMINA TAPE 
Authors
 오남식  ;  김한성  ;  이근우  ;  이명현 
Citation
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.42(2) : 125-132, 2004 
Journal Title
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지) 
ISSN
 0301-2875 
Issue Date
2004
Keywords
All ceramic crown ; Fixed partial denture ; Connector design ; Finite element analysis ; Topology optimization
Abstract
Statements of problem: All ceramic fixed partial denture cores can be made by the slip casting method and the advanced alumina tape method. The fracture resistance of these core connector areas is relatively low. Purpose: The purpose of this study is to standardize the appropriate volumetric figure and location of the connectors in the alumina core fabricated in alumina tape to be used in fixed partial dentures by way of topology optimization. Material and method: A maxillary anterior three-unit bridge alumina core with teeth form and surrounding periodontal apparatus model was used to ultimately design the most structurally rigid form of the connector. Loadings from a $0^{\circ}$, 45° and $60^{\circ}$ to the axis of each tooth were applied and analyzed with the 3-D finite element analysis method. Using the results from these experiments, the topology optimization was applied and the optimal reinforcement layout of connector was obtained and the detail shape in the fixed partial denture core was designed. Results: The modified prosthesis with the form of a bulk in the lower lingual surface of the connector in the event, reduced the stress concentration up to 20% in the 3-D FEA. Conclusion: The formation of a bulk in the lower lingual connector area of an alumina core for a fixed partial denture decreases the stress to a clinically favorable measure but does not harm the esthetic point of view. This result illustrates the possibility of clinical application of the modified form designed by the topology optimization method.
Files in This Item:
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Oh, Nam Sik(오남식)
Lee, Keun Woo(이근우) ORCID logo https://orcid.org/0000-0002-3153-190X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/112931
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