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Chemical composition and morphology study of bovine enamel submitted to different sterilization methods

dc.contributor.authorViana, P. S. [UNESP]
dc.contributor.authorOrlandi, M. O. [UNESP]
dc.contributor.authorPavarina, A. C. [UNESP]
dc.contributor.authorMachado, A. L. [UNESP]
dc.contributor.authorVergani, C. E. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUNISA
dc.date.accessioned2018-12-11T17:13:06Z
dc.date.available2018-12-11T17:13:06Z
dc.date.issued2018-03-01
dc.description.abstractObjectives: The morphology and chemical composition of enamel submitted to different sterilization methods was studied. Methods: X-ray photoelectron spectroscopy (XPS), field emission gun scanning electron microscopy (FEG-SEM), and energy-dispersive X-ray spectroscopy (EDS) were performed to evaluate 50 bovine enamel specimens sterilized using four methods: microwaving (MI), gamma irradiation (GI), ethylene oxide (EO), and steam autoclave (SA). Non-sterilized specimens were used as control. Results: XPS indicated that the concentration of P (phosphorus), CO3 (carbonate), and CO3/P was not changed in all groups. GI produced no significant change on elemental composition. SA produced the major decrease in calcium (Ca), Ca/P ratio, and increase in N (nitrogen). MI was found to decrease Ca, Ca/P ratio and O (oxygen), and increase in C (carbon) and N. EO produced decrease in Ca and O with increased C concentration. FEG-SEM revealed surface and in-depth morphological changes on SA specimens. Minor surface alterations were observed for EO and for MI groups, and no alteration was observed on GI group. EDS indicated no difference on elemental composition of enamel bulk among groups. Conclusions: SA produced mineral loss and morphological alterations on surface and in depth. MI and EO sterilization caused mineral loss showing only slight alteration on enamel surface. GI sterilization preserves the morphological characteristics of enamel. The sterilization methods could be classified from lower to high damage as GI < MI < EO < SA. Clinical relevance: This is a comprehensive comparative study where different methods for enamel sterilization were investigated in terms of chemical changes. The results presented here may help researchers to choose the most appropriate method for their research setting and purpose.en
dc.description.affiliationDepartment of Dental Materials and Prosthodontics Araraquara Dental School Faculdade de Odontologia de Araraquara UNESP Univ Estadual Paulista, Rua Humaitá, N° 1680
dc.description.affiliationFaculdade de Odontologia Universidade Santo Amaro UNISA
dc.description.affiliationDepartment of Physical Chemistry Institute of Chemistry UNESP Univ Estadual Paulista
dc.description.affiliationUnespDepartment of Dental Materials and Prosthodontics Araraquara Dental School Faculdade de Odontologia de Araraquara UNESP Univ Estadual Paulista, Rua Humaitá, N° 1680
dc.description.affiliationUnespDepartment of Physical Chemistry Institute of Chemistry UNESP Univ Estadual Paulista
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2011/09416-0
dc.description.sponsorshipIdFAPESP: 2011/10358-4
dc.format.extent733-744
dc.identifierhttp://dx.doi.org/10.1007/s00784-017-2148-5
dc.identifier.citationClinical Oral Investigations, v. 22, n. 2, p. 733-744, 2018.
dc.identifier.doi10.1007/s00784-017-2148-5
dc.identifier.issn1436-3771
dc.identifier.issn1432-6981
dc.identifier.scopus2-s2.0-85021750558
dc.identifier.urihttp://hdl.handle.net/11449/174837
dc.language.isoeng
dc.relation.ispartofClinical Oral Investigations
dc.relation.ispartofsjr0,986
dc.relation.ispartofsjr0,986
dc.rights.accessRightsAcesso abertopt
dc.sourceScopus
dc.subjectChemical analysis
dc.subjectDental enamel
dc.subjectEDS
dc.subjectSEM
dc.subjectSterilization
dc.subjectXPS
dc.titleChemical composition and morphology study of bovine enamel submitted to different sterilization methodsen
dc.typeArtigopt
dspace.entity.typePublication
relation.isDepartmentOfPublication3936e2e2-946a-42ab-8b9d-9521513200fc
relation.isDepartmentOfPublication.latestForDiscovery3936e2e2-946a-42ab-8b9d-9521513200fc
relation.isOrgUnitOfPublicationca4c0298-cd82-48ee-a9c8-c97704bac2b0
relation.isOrgUnitOfPublication.latestForDiscoveryca4c0298-cd82-48ee-a9c8-c97704bac2b0
unesp.author.lattes8867670539105403[3]
unesp.author.lattes8000248781842587[4]
unesp.author.lattes3003130522427820[5]
unesp.author.orcid0000-0002-9231-1994[3]
unesp.author.orcid0000-0002-2718-428X[4]
unesp.author.orcid0000-0002-7375-4714[5]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Odontologia, Araraquarapt
unesp.departmentMateriais Odontológicos e Prótese - FOARpt
unesp.departmentFísico-Química - IQARpt

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