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Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis

Authors
 Ki-Sun Lee  ;  Joo-Hee Shin  ;  Jong-Eun Kim  ;  Jee-Hwan Kim  ;  Won-Chang Lee  ;  Sang-Wan Shin  ;  Jeong-Yol Lee 
Citation
 BIOMED RESEARCH INTERNATIONAL, Vol.2017 : 1373127, 2017 
Journal Title
 BIOMED RESEARCH INTERNATIONAL 
ISSN
 2314-6133 
Issue Date
2017
MeSH
Composite Resins/chemistry ; Composite Resins/therapeutic use ; Crowns ; Dental Materials/chemistry ; Dental Materials/therapeutic use ; Dental Stress Analysis* ; Finite Element Analysis ; Glass/chemistry ; Gold/chemistry ; Humans ; Incisor/drug effects ; Incisor/pathology ; Ketones/chemistry* ; Ketones/therapeutic use ; Polyethylene Glycols/chemistry* ; Polyethylene Glycols/therapeutic use ; Polymers/chemistry* ; Polymers/therapeutic use ; Tooth Root/drug effects* ; Tooth Root/pathology
Abstract
The aim of this study was to evaluate the biomechanical behavior and long-term safety of high performance polymer PEKK as an intraradicular dental post-core material through comparative finite element analysis (FEA) with other conventional post-core materials. A 3D FEA model of a maxillary central incisor was constructed. A cyclic loading force of 50 N was applied at an angle of 45° to the longitudinal axis of the tooth at the palatal surface of the crown. For comparison with traditionally used post-core materials, three materials (gold, fiberglass, and PEKK) were simulated to determine their post-core properties. PEKK, with a lower elastic modulus than root dentin, showed comparably high failure resistance and a more favorable stress distribution than conventional post-core material. However, the PEKK post-core system showed a higher probability of debonding and crown failure under long-term cyclic loading than the metal or fiberglass post-core systems.
Files in This Item:
T201950008.pdf Download
DOI
10.1155/2017/1373127
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jong Eun(김종은) ORCID logo https://orcid.org/0000-0002-7834-2524
Kim, Jee Hwan(김지환) ORCID logo https://orcid.org/0000-0002-0872-4906
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/167685
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