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

被引：26
作者：
Lee, Ki-Sun [1 ]
Shin, Joo-Hee [2 ]
Kim, Jong-Eun [3 ]
Kim, Jee-Hwan [3 ]
Lee, Won-Chang [4 ]
Shin, Sang-Wan [1 ]
Lee, Jeong-Yol [1 ]
机构：
[1] Korea Univ, Guro Hosp, Dept Prosthodont, Seoul, South Korea
[2] Korea Univ, Guro Hosp, Dept Conservat Dent, Seoul, South Korea
[3] Yonsei Univ, Dept Prosthodont, Coll Dent, Seoul, South Korea
[4] Korea Univ, Grad Sch Clin Dent, Seoul, South Korea
来源：
BIOMED RESEARCH INTERNATIONAL | 2017年 / 2017卷
关键词：
FIBER-REINFORCED COMPOSITE; STRESS-DISTRIBUTION; FRACTURE STRENGTH; POSTS; TEETH; CORE; RESISTANCE; GLASS; ROOTS;
D O I：
10.1155/2017/1373127
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
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 50N was applied at an angle of 45 degrees 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-corematerial. 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.
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页数：9
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