| Evaluation of regional bond strength of resin cement to endodontic surfaces. | |
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MedLine Citation:
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PMID: 11485248 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to test the feasibility of adapting a new microtensile testing technique to measure resin cement bond strengths to the cervical, middle, and apical thirds of root canals. Post spaces were created in extracted human teeth, and the roots were ground flat on one side to expose the canal and permit ideal placement of one of two resin cements (Panavia 21 or C&B Metabond). After 48 h of storage, serial 1-mm-thick cross-sections were cut to create 6-10 specimens per root. The first three specimens were from the cervical third, the next three were from the middle third, and the last three were from the apical third of the root. Each 1 x 1 x 8 mm specimen was pulled to failure in a miniature testing machine. The results indicated that both resin cements produced high bond strengths (12-23 MPa), and that bond strengths to the apical third were significantly higher (p < 0.05) than to the cervical or middle third with either cement. This new method shows promise for evaluating resin bond strengths within root canals. |
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Authors:
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B A Gaston; L A West; F R Liewehr; C Fernandes; D H Pashley |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of endodontics Volume: 27 ISSN: 0099-2399 ISO Abbreviation: J Endod Publication Date: 2001 May |
Date Detail:
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Created Date: 2001-08-03 Completed Date: 2001-10-18 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7511484 Medline TA: J Endod Country: United States |
Other Details:
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Languages: eng Pagination: 321-4 Citation Subset: D |
Affiliation:
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U.S Army Endodontic Residency, USA DENTAC, Fort Gordon, GA, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adhesiveness Analysis of Variance Boron Compounds Dental Bonding* Dental Pulp Cavity* Dentin Dentin-Bonding Agents* Feasibility Studies Humans Materials Testing / methods Methacrylates Methylmethacrylates Phosphates Post and Core Technique Resin Cements* Root Canal Filling Materials* Statistics, Nonparametric Tensile Strength |
| Grant Support | |
ID/Acronym/Agency:
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DE 06427/DE/NIDCR NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Boron Compounds; 0/Dentin-Bonding Agents; 0/Methacrylates; 0/Methylmethacrylates; 0/Panavia TPN-S; 0/Phosphates; 0/Resin Cements; 0/Root Canal Filling Materials; 95508-14-8/Super-bond |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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