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Article: The effect of long-term storage on nanoleakage.

TitleThe effect of long-term storage on nanoleakage.
Authors
KeywordsChemicals And Cas Registry Numbers
Issue Date2001
PublisherOperative Dentistry. The Journal's web site is located at http://www.jopdent.org
Citation
Operative Dentistry, 2001, v. 26 n. 6, p. 609-616 How to Cite?
AbstractTo evaluate the durability of dentin bonding over time, the nanoleakage of four dentin bonding systems (Single Bond, Stae, Clearfil SE Bond and PermaQuik) over 24 hours, three months, six months and 12 months, was investigated. Flat occlusal dentin surfaces from extracted human molars were finished with wet 600-grit silicon carbide paper and bonded with one of the dentin bonding systems following manufacturers' instructions. The bonded surface was covered with < 1 mm thick layer of Silux Plus resin composite and light cured for 40 seconds. The specimens in each dentin-bonding group were randomly assigned to four sub-groups and kept in phosphate buffered saline solution (pH 7.4) containing 0.01% sodium azide at 37 degrees C for 24 hours, three, six or 12 months. The margins of all specimens were finished and polished with Sof-Lex disks after initial 24-hour storage. At the end of each storage time, the surrounding tooth surfaces except for 1 mm adjacent to the restoration were coated with nail varnish. The samples were immersed in a 50% w/v solution of silver nitrate for 24 hours, placed in photodeveloping solution and exposed to fluorescent light for eight hours. The samples were cut longitudinally and buccoligually, polished, mounted on stubs, carbon coated and observed in a Field Emission-SEM using backscattered electron mode. The results showed that systems using phosphoric acid as the etchant had a line of silver deposition at the base of the hybrid layer. Silver deposition increased in all systems over 12-months storage, with PermaQuik changing the least. Nanoleakage of the dentin bonding systems increased slightly during the 12-month storage period, indicating that they may be subject to hydrolytic attack over time.
Persistent Identifierhttp://hdl.handle.net/10722/90596
ISSN
2015 Impact Factor: 2.819
2015 SCImago Journal Rankings: 0.641
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, HPen_HK
dc.contributor.authorBurrow, MFen_HK
dc.contributor.authorTyas, MJen_HK
dc.date.accessioned2010-09-17T10:05:26Z-
dc.date.available2010-09-17T10:05:26Z-
dc.date.issued2001en_HK
dc.identifier.citationOperative Dentistry, 2001, v. 26 n. 6, p. 609-616en_HK
dc.identifier.issn0361-7734en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90596-
dc.description.abstractTo evaluate the durability of dentin bonding over time, the nanoleakage of four dentin bonding systems (Single Bond, Stae, Clearfil SE Bond and PermaQuik) over 24 hours, three months, six months and 12 months, was investigated. Flat occlusal dentin surfaces from extracted human molars were finished with wet 600-grit silicon carbide paper and bonded with one of the dentin bonding systems following manufacturers' instructions. The bonded surface was covered with < 1 mm thick layer of Silux Plus resin composite and light cured for 40 seconds. The specimens in each dentin-bonding group were randomly assigned to four sub-groups and kept in phosphate buffered saline solution (pH 7.4) containing 0.01% sodium azide at 37 degrees C for 24 hours, three, six or 12 months. The margins of all specimens were finished and polished with Sof-Lex disks after initial 24-hour storage. At the end of each storage time, the surrounding tooth surfaces except for 1 mm adjacent to the restoration were coated with nail varnish. The samples were immersed in a 50% w/v solution of silver nitrate for 24 hours, placed in photodeveloping solution and exposed to fluorescent light for eight hours. The samples were cut longitudinally and buccoligually, polished, mounted on stubs, carbon coated and observed in a Field Emission-SEM using backscattered electron mode. The results showed that systems using phosphoric acid as the etchant had a line of silver deposition at the base of the hybrid layer. Silver deposition increased in all systems over 12-months storage, with PermaQuik changing the least. Nanoleakage of the dentin bonding systems increased slightly during the 12-month storage period, indicating that they may be subject to hydrolytic attack over time.en_HK
dc.languageengen_HK
dc.publisherOperative Dentistry. The Journal's web site is located at http://www.jopdent.orgen_HK
dc.relation.ispartofOperative dentistryen_HK
dc.subjectChemicals And Cas Registry Numbersen_HK
dc.subject.meshBisphenol A-Glycidyl Methacrylate - chemistryen_HK
dc.subject.meshDental Leakageen_HK
dc.subject.meshDentin-Bonding Agents - chemistryen_HK
dc.subject.meshDrug Storageen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMolaren_HK
dc.subject.meshRandom Allocationen_HK
dc.subject.meshResin Cements - chemistryen_HK
dc.subject.meshSilver Nitrateen_HK
dc.titleThe effect of long-term storage on nanoleakage.en_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.pmid11699186-
dc.identifier.scopuseid_2-s2.0-0035514936en_HK
dc.identifier.volume26en_HK
dc.identifier.issue6en_HK
dc.identifier.spage609en_HK
dc.identifier.epage616en_HK
dc.identifier.isiWOS:000171903000014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, HP=15035396600en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK
dc.identifier.scopusauthoridTyas, MJ=7006088443en_HK

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