IR@PKUHSC  > 北京大学口腔医学院  > 口腔修复科
学科主题口腔医学
Fatigue Resistance of Resin-Bonded Post-Core-Crown Treated Teeth with Flared Root Canal
Xie, Qiufie1; Wu, Wei1; Liu, Peng1; Vallittu, Pekka K.2
关键词Fatigue resistance fiber reinforced composite flared root canal load-bearing capacity post and core resin bonded
刊名JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
2009
DOI10.1163/156856109X432677
23期:7-8页:1113-1124
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Engineering, Chemical ; Materials Science, Multidisciplinary ; Mechanics
研究领域[WOS]Engineering ; Materials Science ; Mechanics
关键词[WOS]FRACTURE-RESISTANCE ; PULPLESS TEETH ; COMPOSITE POSTS ; BITE FORCE ; IN-VITRO ; FIBER ; MORPHOLOGY ; STRENGTH
英文摘要

Here the objective was to evaluate fatigue resistance of anterior teeth with flared root canal restored using resin-bonded individualized fiber-reinforced composite (FRC) posts, prefabricated FRC posts, or prefabricated stainless-steel posts.

Twenty-four maxillary central incisors were endodontically treated and prepared as flared root canals. They were divided into three groups of 8 each. In Group 1, individual posts were made of FRC material. Prefabricated FRC posts were used for Group 2 and prefabricated stainless-steel posts used in Group 3. All posts were cemented with a self-adhesive resin into canals. The composite core and porcelain fused to metal crown were made for each. The specimens underwent thermocycling and dynamic mechanical loading and survived specimens were loaded to fracture. The data were statistically analyzed using ANOVA and independent sample t-test.

In the fatigue test, Group 1 had no failure; all Group 2 specimens failed; and 7 specimens of Group 3 survived. There were significant differences in numbers of cyclically mechanical loading times between Groups 1 and 2, and Groups 2 and 3 (p < 0.01, p < 0.05). The average of residual load-bearing capacity was 317.5 (+/- 90.2) N for Group 1 and 403.8 (+/- 138.2) N for Group 3 and there was no significant difference between these two groups. The fracture mode of specimens was cervical root fracture with or without vertical crack in both Groups 1 and 3. In Group 2 the debonding mostly occurred at the cement-post interface.

This in vitro study indicates that the flared canal teeth restored with individually formed FRC posts and prefabricated serrated stainless-steel posts provide good resistance against cyclic loading. The teeth restored with conventional prefabricated FRC posts may not be strong enough to resist masticatory forces without a ferrule. (C) Koninklijke Brill NV, Leiden, 2009

语种英语
WOS记录号WOS:000268125700013
Citation statistics
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/60376
Collection北京大学口腔医学院_口腔修复科
作者单位1.Peking Univ Sch & Hosp Stomatol, Dept Prosthodont, Beijing 100081, Peoples R China
2.Univ Turku, Inst Dent, Fac Med, Dept Prosthet Dent & Biomat Sci, Turku, Finland
Recommended Citation
GB/T 7714
Xie, Qiufie,Wu, Wei,Liu, Peng,et al. Fatigue Resistance of Resin-Bonded Post-Core-Crown Treated Teeth with Flared Root Canal[J]. JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY,2009,23(7-8):1113-1124.
APA Xie, Qiufie,Wu, Wei,Liu, Peng,&Vallittu, Pekka K..(2009).Fatigue Resistance of Resin-Bonded Post-Core-Crown Treated Teeth with Flared Root Canal.JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY,23(7-8),1113-1124.
MLA Xie, Qiufie,et al."Fatigue Resistance of Resin-Bonded Post-Core-Crown Treated Teeth with Flared Root Canal".JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY 23.7-8(2009):1113-1124.
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