Document Detail

Evaluation of regional bond strength of resin cement to endodontic surfaces.
MedLine Citation:
PMID:  11485248     Owner:  NLM     Status:  MEDLINE    
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.
B A Gaston; L A West; F R Liewehr; C Fernandes; D H Pashley
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of endodontics     Volume:  27     ISSN:  0099-2399     ISO Abbreviation:  J Endod     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-08-03     Completed Date:  2001-10-18     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7511484     Medline TA:  J Endod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  321-4     Citation Subset:  D    
U.S Army Endodontic Residency, USA DENTAC, Fort Gordon, GA, USA.
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MeSH Terms
Analysis of Variance
Boron Compounds
Dental Bonding*
Dental Pulp Cavity*
Dentin-Bonding Agents*
Feasibility Studies
Materials Testing / methods
Post and Core Technique
Resin Cements*
Root Canal Filling Materials*
Statistics, Nonparametric
Tensile Strength
Grant Support
Reg. No./Substance:
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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