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Article: Effect of intrinsic wetness and regional difference on dentin bond strength

TitleEffect of intrinsic wetness and regional difference on dentin bond strength
Authors
KeywordsChemicals And Cas Registry Numbers
Issue Date1999
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental
Citation
Dental Materials, 1999, v. 15 n. 1, p. 46-53 How to Cite?
AbstractObjectives: The aim of this investigation was to determine the influence of intrinsic wetness on regional bond strengths of adhesive resins to dentin. Methods: Human caries-free third molars were randomly divided into three groups for bonding: Group 1 - no pulpal pressure; Group 2 -pulpal pressure of 15 cm H2O; and Group 3 - dentin dried overnight in a desiccator. Clearfil Liner Bond II (Kuraray) or One Step (Bisco) adhesive resins systems were applied to the flat dentin surfaces and the teeth were restored with APX resin composite (Kuraray). After 24 h in water at 37°C, the specimens were sectioned into 0.7 mm thick slabs and divided into three regional subgroups according to the remaining dentin thickness and visual criteria: pulp horn, center, and periphery. The slabs were then trimmed for the micro-tensile bond test and subjected to a tensile force and crosshead of 1 mm/min. The data were analyzed with ANOVA and Fisher's PLSD test at a confidence level of 95%. The fracture modes were determined under a scanning electron microscope (JXA-840, JEOL, Japan). Results: No significant regional difference was observed for the Group 1 and 2 specimens restored with Clearfil Liner Bond II (p > 0.05). However, bond strengths significantly decreased at the pulp horn region of the Group 1 and 2 specimens restored with One Step (p < 0.01). All bond strengths of Group 3 decreased significantly and regional differences were not evident (p > 0.05). Significance: The dentin adhesive system should be chosen according to the substrate and region to be bonded, since bond strengths can vary according to the intrinsic wetness, region, and the adhesive system. © 1999 Published by Elsevier Science Ltd on behalf of the Academy of Dental Materials. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/90653
ISSN
2015 Impact Factor: 3.931
2015 SCImago Journal Rankings: 1.339
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPereira, PNRen_HK
dc.contributor.authorOkuda, Men_HK
dc.contributor.authorSano, Hen_HK
dc.contributor.authorYoshikawa, Ten_HK
dc.contributor.authorBurrow, MFen_HK
dc.contributor.authorTagami, Jen_HK
dc.date.accessioned2010-09-17T10:06:18Z-
dc.date.available2010-09-17T10:06:18Z-
dc.date.issued1999en_HK
dc.identifier.citationDental Materials, 1999, v. 15 n. 1, p. 46-53en_HK
dc.identifier.issn0109-5641en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90653-
dc.description.abstractObjectives: The aim of this investigation was to determine the influence of intrinsic wetness on regional bond strengths of adhesive resins to dentin. Methods: Human caries-free third molars were randomly divided into three groups for bonding: Group 1 - no pulpal pressure; Group 2 -pulpal pressure of 15 cm H2O; and Group 3 - dentin dried overnight in a desiccator. Clearfil Liner Bond II (Kuraray) or One Step (Bisco) adhesive resins systems were applied to the flat dentin surfaces and the teeth were restored with APX resin composite (Kuraray). After 24 h in water at 37°C, the specimens were sectioned into 0.7 mm thick slabs and divided into three regional subgroups according to the remaining dentin thickness and visual criteria: pulp horn, center, and periphery. The slabs were then trimmed for the micro-tensile bond test and subjected to a tensile force and crosshead of 1 mm/min. The data were analyzed with ANOVA and Fisher's PLSD test at a confidence level of 95%. The fracture modes were determined under a scanning electron microscope (JXA-840, JEOL, Japan). Results: No significant regional difference was observed for the Group 1 and 2 specimens restored with Clearfil Liner Bond II (p > 0.05). However, bond strengths significantly decreased at the pulp horn region of the Group 1 and 2 specimens restored with One Step (p < 0.01). All bond strengths of Group 3 decreased significantly and regional differences were not evident (p > 0.05). Significance: The dentin adhesive system should be chosen according to the substrate and region to be bonded, since bond strengths can vary according to the intrinsic wetness, region, and the adhesive system. © 1999 Published by Elsevier Science Ltd on behalf of the Academy of Dental Materials. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dentalen_HK
dc.relation.ispartofDental Materialsen_HK
dc.subjectChemicals And Cas Registry Numbersen_HK
dc.subject.meshDental Bondingen_HK
dc.subject.meshDental Stress Analysisen_HK
dc.subject.meshDentin - chemistryen_HK
dc.subject.meshDentin-Bonding Agents - chemistryen_HK
dc.subject.meshDesiccationen_HK
dc.subject.meshHumansen_HK
dc.subject.meshHydrostatic Pressureen_HK
dc.subject.meshMethacrylates - chemistryen_HK
dc.subject.meshMicroscopy, Electron, Scanningen_HK
dc.subject.meshTensile Strengthen_HK
dc.subject.meshWater - chemistryen_HK
dc.subject.meshWettabilityen_HK
dc.titleEffect of intrinsic wetness and regional difference on dentin bond strengthen_HK
dc.typeArticleen_HK
dc.identifier.emailBurrow, MF:mfburr58@hku.hken_HK
dc.identifier.authorityBurrow, MF=rp01306en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid10483395-
dc.identifier.scopuseid_2-s2.0-0032609138en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032609138&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue1en_HK
dc.identifier.spage46en_HK
dc.identifier.epage53en_HK
dc.identifier.isiWOS:000080816800007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridPereira, PNR=7202938166en_HK
dc.identifier.scopusauthoridOkuda, M=7203079287en_HK
dc.identifier.scopusauthoridSano, H=7403159147en_HK
dc.identifier.scopusauthoridYoshikawa, T=7402717952en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK
dc.identifier.scopusauthoridTagami, J=7005967527en_HK

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