rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
5
|
pubmed:dateCreated |
2006-4-24
|
pubmed:abstractText |
Removal of the oxygen inhibition layer from the surface of resin-coated gutta-percha cones during packaging has been hypothesized for their weak adhesion to a methacrylate-based root canal sealer, resulting in their frequent delamination from the sealer after root canal obturation. This study examined the feasibility of creating oxygen inhibition layers on resin-coated gutta-percha cones via the adjunctive application of a dual-cured dentin adhesive just before bonding. Composite cylinders were bonded with EndoREZ to flat, resin-coated gutta-percha disks and similar disks that were post-treated with Prime&Bond NT Dual Cure adhesive and stressed to failure using a modified microshear testing design. Although shear strengths for both groups were relatively low, a 5-fold increase in shear strength was observed after adhesive application, with complex interfacial failures instead of complete sealer delamination from the resin-coating. In-situ dentin adhesive application appears to have merits in enhancing the coupling of resin-coated gutta-percha to methacrylate sealers.
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pubmed:grant |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
D
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
May
|
pubmed:issn |
0099-2399
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
32
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
429-33
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:16631842-Analysis of Variance,
pubmed-meshheading:16631842-Coated Materials, Biocompatible,
pubmed-meshheading:16631842-Composite Resins,
pubmed-meshheading:16631842-Dental Bonding,
pubmed-meshheading:16631842-Dental Stress Analysis,
pubmed-meshheading:16631842-Dentin-Bonding Agents,
pubmed-meshheading:16631842-Drug Storage,
pubmed-meshheading:16631842-Gutta-Percha,
pubmed-meshheading:16631842-Materials Testing,
pubmed-meshheading:16631842-Microscopy, Electron, Scanning,
pubmed-meshheading:16631842-Oxygen,
pubmed-meshheading:16631842-Resin Cements,
pubmed-meshheading:16631842-Root Canal Filling Materials,
pubmed-meshheading:16631842-Shear Strength,
pubmed-meshheading:16631842-Statistics, Nonparametric,
pubmed-meshheading:16631842-Surface Properties
|
pubmed:year |
2006
|
pubmed:articleTitle |
Is an oxygen inhibited layer required for bonding of resin-coated gutta-percha to a methacrylate-based root canal sealer?
|
pubmed:affiliation |
Pediatric Dentistry and Orthodontics, The University of Hong Kong, Pokfulam, China.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
|