Study of the morphological alterations to enamel and dentin in human and bovine teeth after irradiation with Er : YAG laser

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dc.contributor.authorFontana, C. R.
dc.contributor.authorMalta, DAMP
dc.contributor.authorFontana, U. F.
dc.contributor.authorSampaio, JEC
dc.contributor.authorBernardes, V. L.
dc.contributor.authorde Andrade, M. F.
dc.contributor.institutionInst Phys Sao Carlos
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFac Dent Barretos
dc.date.accessioned2014-05-20T15:27:16Z
dc.date.available2014-05-20T15:27:16Z
dc.date.issued2004-08-01
dc.description.abstractObjective: the purpose of this study is to make use of scanning electron microscopy in order to comparatively analyze the morphological alterations to human and bovine enamel and dentin. Earlier data: Many a morphological study involving Er:YAG laser can be found in the literature. Still, not a single study comparing the effects of this infrared laser in human and bovine teeth has been reported. Materials and Methods: Thirty-two slices of human and bovine enamel and dentin were evenly divided into four groups. With the exception of the control group, the samples were irradiated with Er:YAG laser, focused at a distance of 12 mm and a 10-Hz frequency, with 150, 250, and 350 mJ of output energy per pulse for 10 seconds. After irradiation all specimens were observed under a scanning electron microscope. Results: There was practically no morphological difference for those samples that underwent 150 mJ/pulse irradiation. The dentin exposed to 250 mJ had a few open dentinal tubules. These were seen in enamel after a 350 mJ irradiation, in which the energy was able to reach the dentin. Conclusions: the breadth of this study allows us to state that the pattern between the species grew more heterogenous as the energy density was increased and that irradiation with 150 mJ/pulse resulted in greater likeness in human and bovine enamel and dentin.en
dc.description.affiliationInst Phys Sao Carlos, BR-13560970 São Paulo, Brazil
dc.description.affiliationAraaquara State Univ São Paulo, BR-14801903 Araraquara, SP, Brazil
dc.description.affiliationFac Dent Barretos, BR-14783226 São Paulo, Brazil
dc.description.affiliationUnespAraaquara State Univ São Paulo, BR-14801903 Araraquara, SP, Brazil
dc.format.extent411-416
dc.identifierhttp://dx.doi.org/10.1002/lapl.200410092
dc.identifier.citationLaser Physics Letters. Weinheim: Wiley-v C H Verlag Gmbh, v. 1, n. 8, p. 411-416, 2004.
dc.identifier.doi10.1002/lapl.200410092
dc.identifier.issn1612-2011
dc.identifier.urihttp://hdl.handle.net/11449/37287
dc.identifier.wosWOS:000227180700007
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofLaser Physics Letters
dc.relation.ispartofjcr2.240
dc.relation.ispartofsjr0,818
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectmorphologypt
dc.subjectenamelpt
dc.subjectdentinpt
dc.subjectEr : YAG laserpt
dc.titleStudy of the morphological alterations to enamel and dentin in human and bovine teeth after irradiation with Er : YAG laseren
dc.typeArtigo
dcterms.licensehttp://iopscience.iop.org/page/copyright
dcterms.rightsHolderWiley-Blackwell
unesp.author.lattes5168319315634298[1]
unesp.author.orcid0000-0002-9135-3690[3]
unesp.author.orcid0000-0002-9135-3690[1]

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