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Article: Raman spectroscopic study of noncarious cervical lesions

TitleRaman spectroscopic study of noncarious cervical lesions
Authors
KeywordsChemicals And Cas Registry Numbers
Issue Date2005
PublisherSpringer Japan. The Journal's web site is located at http://link.springer.de/link/service/journals/10266/about.htm
Citation
Odontology, 2005, v. 93 n. 1, p. 35-40 How to Cite?
AbstractThe surface of noncarious cervical lesions (NCCLs) consists of sclerosed dentin. This type of dentin may affect the ability of adhesive restorative materials to bond well to its surface, but little information exists on the chemical nature of this dentin surface and how it may be affected during acidic treatment. The inorganic part of normal dentin and dentin from NCCLs before and after acid conditioning with phosphoric acid or polyacrylic acid was investigated. Ten premolars with NCCLs and four human third molars (control) were used. Replicas of NCCLs were examined using scanning electron microscopy (SEM). Surfaces and longitudinal sections of four NCCLs and control dentin discs were analyzed using Raman spectroscopy. The discs and NCCLs were sectioned, and treated with 35% phosphoric acid or 20% polyacrylic acid/3% aluminum chloride, and Raman spectra obtained. The area under phosphate ν1 of the dentin spectrum was computed to obtain a ratio with the area under the second-order spectrum of a silicon phonon comparative standard. Mean phosphate ν1 and silicon phonon ratios from normal dentin and NCCLs were compared using a linear model with repeated measurements and Tukey's pairwise tests. Mean ratios from different locations of the NCCLs were compared using one-way analysis of variance (ANOVA) and Tukey's pairwise tests. SEM micrographs of NCCL surfaces showed variation from relatively smooth with no dentinal tubule openings to surfaces with occluded tubules. The mean phosphate ν1 and silicon phonon ratios for NCCLs were higher than those of normal dentin in all treatment groups (P < 0.05). Ratios from the untreated specimens were higher than those of the polyacrylic acid-treated specimens, and those for the phosphoric acid-treated group were the lowest (P < 0.05). The ratios obtained for the surfaces of NCCLs were higher than those halfway towards the pulp, and those adjacent to the pulp were the lowest (P < 0.05). © The Society of The Nippon Dental University 2005.
Persistent Identifierhttp://hdl.handle.net/10722/90579
ISSN
2015 Impact Factor: 1.538
2015 SCImago Journal Rankings: 0.493
References

 

DC FieldValueLanguage
dc.contributor.authorSakoolnamarka, Ren_HK
dc.contributor.authorBurrow, MFen_HK
dc.contributor.authorPrawer, Sen_HK
dc.contributor.authorTyas, MJen_HK
dc.date.accessioned2010-09-17T10:05:10Z-
dc.date.available2010-09-17T10:05:10Z-
dc.date.issued2005en_HK
dc.identifier.citationOdontology, 2005, v. 93 n. 1, p. 35-40en_HK
dc.identifier.issn1618-1247en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90579-
dc.description.abstractThe surface of noncarious cervical lesions (NCCLs) consists of sclerosed dentin. This type of dentin may affect the ability of adhesive restorative materials to bond well to its surface, but little information exists on the chemical nature of this dentin surface and how it may be affected during acidic treatment. The inorganic part of normal dentin and dentin from NCCLs before and after acid conditioning with phosphoric acid or polyacrylic acid was investigated. Ten premolars with NCCLs and four human third molars (control) were used. Replicas of NCCLs were examined using scanning electron microscopy (SEM). Surfaces and longitudinal sections of four NCCLs and control dentin discs were analyzed using Raman spectroscopy. The discs and NCCLs were sectioned, and treated with 35% phosphoric acid or 20% polyacrylic acid/3% aluminum chloride, and Raman spectra obtained. The area under phosphate ν1 of the dentin spectrum was computed to obtain a ratio with the area under the second-order spectrum of a silicon phonon comparative standard. Mean phosphate ν1 and silicon phonon ratios from normal dentin and NCCLs were compared using a linear model with repeated measurements and Tukey's pairwise tests. Mean ratios from different locations of the NCCLs were compared using one-way analysis of variance (ANOVA) and Tukey's pairwise tests. SEM micrographs of NCCL surfaces showed variation from relatively smooth with no dentinal tubule openings to surfaces with occluded tubules. The mean phosphate ν1 and silicon phonon ratios for NCCLs were higher than those of normal dentin in all treatment groups (P < 0.05). Ratios from the untreated specimens were higher than those of the polyacrylic acid-treated specimens, and those for the phosphoric acid-treated group were the lowest (P < 0.05). The ratios obtained for the surfaces of NCCLs were higher than those halfway towards the pulp, and those adjacent to the pulp were the lowest (P < 0.05). © The Society of The Nippon Dental University 2005.en_HK
dc.languageengen_HK
dc.publisherSpringer Japan. The Journal's web site is located at http://link.springer.de/link/service/journals/10266/about.htmen_HK
dc.relation.ispartofOdontologyen_HK
dc.subjectChemicals And Cas Registry Numbersen_HK
dc.subject.meshAcid Etching, Dentalen_HK
dc.subject.meshAcrylic Resins - chemistryen_HK
dc.subject.meshArea Under Curveen_HK
dc.subject.meshDental Pulp - pathologyen_HK
dc.subject.meshDentin - chemistry - pathologyen_HK
dc.subject.meshDentin, Secondary - chemistry - pathologyen_HK
dc.subject.meshHumansen_HK
dc.subject.meshMicroscopy, Electron, Scanningen_HK
dc.subject.meshPhosphates - analysisen_HK
dc.subject.meshPhosphoric Acids - chemistryen_HK
dc.subject.meshSclerosisen_HK
dc.subject.meshSilicon - analysisen_HK
dc.subject.meshSpectrum Analysis, Ramanen_HK
dc.subject.meshTooth Abrasion - pathologyen_HK
dc.subject.meshTooth Cervix - chemistry - pathologyen_HK
dc.subject.meshTooth Erosion - pathologyen_HK
dc.titleRaman spectroscopic study of noncarious cervical lesionsen_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.doi10.1007/s10266-005-0052-yen_HK
dc.identifier.pmid16170474-
dc.identifier.scopuseid_2-s2.0-26044444157en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-26044444157&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume93en_HK
dc.identifier.issue1en_HK
dc.identifier.spage35en_HK
dc.identifier.epage40en_HK
dc.publisher.placeJapanen_HK
dc.identifier.scopusauthoridSakoolnamarka, R=6508034450en_HK
dc.identifier.scopusauthoridBurrow, MF=7005876730en_HK
dc.identifier.scopusauthoridPrawer, S=7006110206en_HK
dc.identifier.scopusauthoridTyas, MJ=7006088443en_HK

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