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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorFontana, C. R.
dc.creatorMalta, DAMP
dc.creatorFontana, U. F.
dc.creatorSampaio, JEC
dc.creatorBernardes, V. L.
dc.creatorde Andrade, M. F.
dc.date2014-05-20T15:27:16Z
dc.date2016-10-25T18:02:03Z
dc.date2014-05-20T15:27:16Z
dc.date2016-10-25T18:02:03Z
dc.date2004-08-01
dc.date.accessioned2017-04-06T00:01:13Z
dc.date.available2017-04-06T00:01:13Z
dc.identifierLaser Physics Letters. Weinheim: Wiley-v C H Verlag Gmbh, v. 1, n. 8, p. 411-416, 2004.
dc.identifier1612-2011
dc.identifierhttp://hdl.handle.net/11449/37287
dc.identifierhttp://acervodigital.unesp.br/handle/11449/37287
dc.identifier10.1002/lapl.200410092
dc.identifierWOS:000227180700007
dc.identifierhttp://dx.doi.org/10.1002/lapl.200410092
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/880631
dc.descriptionObjective: 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.
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationLaser Physics Letters
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectmorphology
dc.subjectenamel
dc.subjectdentin
dc.subjectEr : YAG laser
dc.titleStudy of the morphological alterations to enamel and dentin in human and bovine teeth after irradiation with Er : YAG laser
dc.typeOtro


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