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Article: Microshear bond strength of resin composite to teeth affected by molar hypomineralization using 2 adhesive systems

TitleMicroshear bond strength of resin composite to teeth affected by molar hypomineralization using 2 adhesive systems
Authors
KeywordsDental adhesives
Enamel bonding
Hypomineralization
Microshear bond strength
Issue Date2006
PublisherAmerican Academy of Pediatric Dentistry. The Journal's web site is located at http://www.aapd.org/publications/peddent/
Citation
Pediatric Dentistry, 2006, v. 28 n. 3, p. 233-241 How to Cite?
AbstractPurpose: When restoring hypomineralized first permanent molars, placement of cavo-surface margins can be difficult to ascertain due to uncertainty of the bonding capability of the tooth surface. The purpose of this study was to investigate the adhesion of resin composite bonded to control and hypomineralized enamel with an all-etch single-bottle adhesive or self-etching primer adhesive. Methods: Specimens of control enamel (N=44) and hypomineralized enamel (N=45) had a 0.975-mm diameter composite rod (Filtek Supreme Universal Restorative) bonded with either 3M ESPE Single Bond or Clearfil SE Bond following manufacturers' instructions. Specimens were stressed in shear at 1 mm/min to failure (microshear bond strength). Etched enamel surfaces and enamel-adhesive interfaces were examined under scanning electron microscopy. Results: The microshear bond strength (MPa) of resin composite bonded to hypo-mineralized enamel was significantly lower than for control enamel (3M ESPE Single Bond=7.08±4.90 vs 16.27±10.04; Clearfil SE Bond=10.39±7.56 vs 19.63±7.42; P=.001). Fractures were predominantly adhesive in control enamel and cohesive in hypomineralized enamel. Scotchbond etchant produced deep interprismatic and intercrystal porosity in control enamel and shallow etch patterns with minimal intercrystal porosity in hypomineralized enamel. Control enamel appeared almost unaffected by SE Primer; hypomineralized enamel showed shallow etching. The hypomineralized enamel-adhesive interface was porous with cracks in the enamel. The control enamel-adhesive interface displayed a hybrid layer of even thickness. Conclusions: The microshear bond strength of resin composite bonded to hypomineralized enamel was significantly lower than for control enamel. This was supported by differences seen in etch patterns and at the enamel-adhesive interface.
Persistent Identifierhttp://hdl.handle.net/10722/90610
ISSN
2015 Impact Factor: 0.872
2015 SCImago Journal Rankings: 0.458
References

 

DC FieldValueLanguage
dc.contributor.authorWilliam, Ven_HK
dc.contributor.authorBurrow, MFen_HK
dc.contributor.authorPalamara, JEAen_HK
dc.contributor.authorMesser, LBen_HK
dc.date.accessioned2010-09-17T10:05:39Z-
dc.date.available2010-09-17T10:05:39Z-
dc.date.issued2006en_HK
dc.identifier.citationPediatric Dentistry, 2006, v. 28 n. 3, p. 233-241en_HK
dc.identifier.issn0164-1263en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90610-
dc.description.abstractPurpose: When restoring hypomineralized first permanent molars, placement of cavo-surface margins can be difficult to ascertain due to uncertainty of the bonding capability of the tooth surface. The purpose of this study was to investigate the adhesion of resin composite bonded to control and hypomineralized enamel with an all-etch single-bottle adhesive or self-etching primer adhesive. Methods: Specimens of control enamel (N=44) and hypomineralized enamel (N=45) had a 0.975-mm diameter composite rod (Filtek Supreme Universal Restorative) bonded with either 3M ESPE Single Bond or Clearfil SE Bond following manufacturers' instructions. Specimens were stressed in shear at 1 mm/min to failure (microshear bond strength). Etched enamel surfaces and enamel-adhesive interfaces were examined under scanning electron microscopy. Results: The microshear bond strength (MPa) of resin composite bonded to hypo-mineralized enamel was significantly lower than for control enamel (3M ESPE Single Bond=7.08±4.90 vs 16.27±10.04; Clearfil SE Bond=10.39±7.56 vs 19.63±7.42; P=.001). Fractures were predominantly adhesive in control enamel and cohesive in hypomineralized enamel. Scotchbond etchant produced deep interprismatic and intercrystal porosity in control enamel and shallow etch patterns with minimal intercrystal porosity in hypomineralized enamel. Control enamel appeared almost unaffected by SE Primer; hypomineralized enamel showed shallow etching. The hypomineralized enamel-adhesive interface was porous with cracks in the enamel. The control enamel-adhesive interface displayed a hybrid layer of even thickness. Conclusions: The microshear bond strength of resin composite bonded to hypomineralized enamel was significantly lower than for control enamel. This was supported by differences seen in etch patterns and at the enamel-adhesive interface.en_HK
dc.languageengen_HK
dc.publisherAmerican Academy of Pediatric Dentistry. The Journal's web site is located at http://www.aapd.org/publications/peddent/en_HK
dc.relation.ispartofPediatric Dentistryen_HK
dc.subjectDental adhesivesen_HK
dc.subjectEnamel bondingen_HK
dc.subjectHypomineralizationen_HK
dc.subjectMicroshear bond strengthen_HK
dc.titleMicroshear bond strength of resin composite to teeth affected by molar hypomineralization using 2 adhesive systemsen_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.scopuseid_2-s2.0-33746503204en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33746503204&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume28en_HK
dc.identifier.issue3en_HK
dc.identifier.spage233en_HK
dc.identifier.epage241en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWilliam, V=14053355700en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK
dc.identifier.scopusauthoridPalamara, JEA=36622764100en_HK
dc.identifier.scopusauthoridMesser, LB=7006481737en_HK

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