Document Detail


Durability of fiber-post and resin core build-up systems.
MedLine Citation:
PMID:  20379034     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to evaluate the durability of unidirectional and bidirectional fiber-reinforced post systems under static and cyclic loading. Three prefabricated fiber posts with one of two core composite resins each or a post resin were used. Each specimen was subjected to a three-point bending test after cyclic loading (1000 times) by 0.1, 0.2 or 0.3 mm deflection. Under cyclic loading, flexure strength and elastic modulus tended to show a decrease with increase in deflection in the unidirectional fiber post specimens. No such tendency, however, was observed in the bidirectional fiber post specimen. In conclusion, use of a prefabricated fiber post in a post-and-core complex improved the flexural properties of the core composite resin, regardless of fiber direction. Although deterioration in flexural properties was observed with cyclic loading in the unidirectional fiber post specimens, no significant difference was observed in the bidirectional fiber post specimen.
Authors:
Masayuki Hattori; Shinji Takemoto; Masao Yoshinari; Eiji Kawada; Yutaka Oda
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Dental materials journal     Volume:  29     ISSN:  0287-4547     ISO Abbreviation:  Dent Mater J     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-04-09     Completed Date:  2010-06-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309299     Medline TA:  Dent Mater J     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  224-8     Citation Subset:  D    
Affiliation:
Department of Dental Materials Science, Tokyo Dental College, Masago, Mihama-ku, Chiba, Japan. hattori@tdc.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Bisphenol A-Glycidyl Methacrylate / chemistry
Composite Resins / chemistry*
Dental Alloys / chemistry
Dental Materials / chemistry*
Dental Prosthesis Design*
Dental Restoration Failure
Elastic Modulus
Glass / chemistry*
Humans
Materials Testing
Methacrylates / chemistry
Pliability
Post and Core Technique* / instrumentation
Stainless Steel / chemistry
Stress, Mechanical
Chemical
Reg. No./Substance:
0/Build-it composite resin; 0/Composite Resins; 0/Dental Alloys; 0/Dental Materials; 0/Methacrylates; 0/Unifil Core; 0/fiberglass; 12597-68-1/Stainless Steel; 1565-94-2/Bisphenol A-Glycidyl Methacrylate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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