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Article: The evaluation of four conditioners for glass ionomer cements using field-emission scanning electron microscopy

TitleThe evaluation of four conditioners for glass ionomer cements using field-emission scanning electron microscopy
Authors
KeywordsChemicals And Cas Registry Numbers
Issue Date2001
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jdent
Citation
Journal Of Dentistry, 2001, v. 29 n. 2, p. 131-138 How to Cite?
AbstractObjectives: The purpose of this study was to evaluate the GIC-dentine interface morphology using FE-SEM after four different conditioners (Ketac Conditioner, Dentin Conditioner, Cavity Conditioner, and an experimental conditioner K-930), used with two RM-GICs and one self-cured GIC, and to observe the effect with an AFM of the four different conditioners on the surface of polished human dentine. Materials and methods: sample preparation for FE-SEM: Twenty-four 1-mm thick dentine discs were obtained from superficial occlusal dentine of extracted human third molars, and finished with wet 600-grit SiC paper. The discs were treated for each of the GICs using the conditioners according to the manufacturers' instructions. The specimens were kept in tap water for 24 h at 37°C, and then assigned for one of two observational techniques; a fractured technique and an acid-base technique. Specimens were mounted on aluminium stubs, gold sputter-coated and observed using a FE-SEM. Sample preparation for AFM: Four rectangular dentine blocks approximately 2 mm3 were prepared from two extracted human third molars, polished and finished with diamond paste down to 0.25 μm particle size. One half of each sample was treated with one of the conditioners according to the manufacturers' instructions, and the other half was not conditioned. The samples were stored in distilled water prior to AFM contact mode observation. Results: FE-SEM: All specimens of all materials demonstrated good adaptation to the underlying dentine. However, the specimens conditioned with K-930 showed increased demineralization and a thicker acid-base resistant layer (2.8-3.4 μm) compared with the others (1-2 μm). AFM: The images of conditioned specimens showed demineralization of peritubular dentine. Funneling of dentinal tubule orifices of specimens conditioned with K-930 was observed, and was also seen for the FE-SEM specimens. Significance: The use of surface conditioners resulted in similar adaptation to the non-conditioned specimens at the GIC-dentine interface. All of the GICs demonstrated intimate adaptation to the dentine surface whether it was conditioned or not. © 2001 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/90697
ISSN
2015 Impact Factor: 3.109
2015 SCImago Journal Rankings: 1.029
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTanumiharja, Men_HK
dc.contributor.authorBurrow, MFen_HK
dc.contributor.authorCimmino, Aen_HK
dc.contributor.authorTyas, MJen_HK
dc.date.accessioned2010-09-17T10:06:56Z-
dc.date.available2010-09-17T10:06:56Z-
dc.date.issued2001en_HK
dc.identifier.citationJournal Of Dentistry, 2001, v. 29 n. 2, p. 131-138en_HK
dc.identifier.issn0300-5712en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90697-
dc.description.abstractObjectives: The purpose of this study was to evaluate the GIC-dentine interface morphology using FE-SEM after four different conditioners (Ketac Conditioner, Dentin Conditioner, Cavity Conditioner, and an experimental conditioner K-930), used with two RM-GICs and one self-cured GIC, and to observe the effect with an AFM of the four different conditioners on the surface of polished human dentine. Materials and methods: sample preparation for FE-SEM: Twenty-four 1-mm thick dentine discs were obtained from superficial occlusal dentine of extracted human third molars, and finished with wet 600-grit SiC paper. The discs were treated for each of the GICs using the conditioners according to the manufacturers' instructions. The specimens were kept in tap water for 24 h at 37°C, and then assigned for one of two observational techniques; a fractured technique and an acid-base technique. Specimens were mounted on aluminium stubs, gold sputter-coated and observed using a FE-SEM. Sample preparation for AFM: Four rectangular dentine blocks approximately 2 mm3 were prepared from two extracted human third molars, polished and finished with diamond paste down to 0.25 μm particle size. One half of each sample was treated with one of the conditioners according to the manufacturers' instructions, and the other half was not conditioned. The samples were stored in distilled water prior to AFM contact mode observation. Results: FE-SEM: All specimens of all materials demonstrated good adaptation to the underlying dentine. However, the specimens conditioned with K-930 showed increased demineralization and a thicker acid-base resistant layer (2.8-3.4 μm) compared with the others (1-2 μm). AFM: The images of conditioned specimens showed demineralization of peritubular dentine. Funneling of dentinal tubule orifices of specimens conditioned with K-930 was observed, and was also seen for the FE-SEM specimens. Significance: The use of surface conditioners resulted in similar adaptation to the non-conditioned specimens at the GIC-dentine interface. All of the GICs demonstrated intimate adaptation to the dentine surface whether it was conditioned or not. © 2001 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jdenten_HK
dc.relation.ispartofJournal of Dentistryen_HK
dc.subjectChemicals And Cas Registry Numbersen_HK
dc.subject.meshAcid Etching, Dentalen_HK
dc.subject.meshAcrylic Resins - pharmacologyen_HK
dc.subject.meshCitric Acid - pharmacologyen_HK
dc.subject.meshDental Bondingen_HK
dc.subject.meshDentin - drug effectsen_HK
dc.subject.meshGlass Ionomer Cements - chemistryen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMaterials Testingen_HK
dc.subject.meshMicroscopy, Atomic Forceen_HK
dc.subject.meshMicroscopy, Electron, Scanning - methodsen_HK
dc.subject.meshSmear Layeren_HK
dc.subject.meshSurface Properties - drug effectsen_HK
dc.subject.meshSurface-Active Agents - pharmacologyen_HK
dc.titleThe evaluation of four conditioners for glass ionomer cements using field-emission scanning electron microscopyen_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.doi10.1016/S0300-5712(00)00056-7en_HK
dc.identifier.pmid11239588-
dc.identifier.scopuseid_2-s2.0-0035256608en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035256608&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume29en_HK
dc.identifier.issue2en_HK
dc.identifier.spage131en_HK
dc.identifier.epage138en_HK
dc.identifier.isiWOS:000167364800008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridTanumiharja, M=6602267792en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK
dc.identifier.scopusauthoridCimmino, A=7004081439en_HK
dc.identifier.scopusauthoridTyas, MJ=7006088443en_HK

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