Incorporation of ZnCl2 into an etch-and-rinse adhesive system on flexural strength, degree of conversion and bond durability to caries-affected dentin

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dc.contributor.authorRodrigues Oliveira, Cerida Aurelia
dc.contributor.authorPeixoto Campos, Rosa Maria
dc.contributor.authorCampos Macedo, Julia Peixoto
dc.contributor.authorSilva, Anderson Rodrigo
dc.contributor.authorCandid Maximo, Leandro Neriton
dc.contributor.authorSilva, Tania Mara [UNESP]
dc.contributor.authorGomes Franca, Fabiana Mantovani
dc.contributor.authorBasting, Roberta Tarkany
dc.contributor.authorTurssi, Cecilia Pedroso
dc.contributor.authorPaiva Goncalves, Sergio Eduardo de [UNESP]
dc.contributor.authorBotelho Amaral, Flavia Lucisano
dc.contributor.institutionSao Leopoldo Mand Inst & Dent Res Ctr
dc.contributor.institutionInst Fed Goiano
dc.contributor.institutionUniv Ctr Cesmac
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-10T17:04:52Z
dc.date.available2020-12-10T17:04:52Z
dc.date.issued2019-12-01
dc.description.abstractPurpose: To evaluate the effect of a zinc chloride (ZnCl2) solution (2% wt), incorporated into a two-step etch-and-rinse adhesive system (AS), on microtensile bond strength (mu TBS) to caries-affected dentin (CAD). Methods: First, the degree of conversion (DC) of the AS with and without the ZnCl2 solution was evaluated by Fourier transform infrared spectroscopy (FTIR). Second, beam-shaped samples (7 mm x 2 mm x 1 mm) were prepared with the AS containing the ZnCl2 solution to perform flexural strength (FS) tests. For mu TBS testing purposes, CAD surfaces were etched with phosphoric acid and randomly divided into three groups (n=10): ZnCl2 - AS with ZnCl2; NT (no treatment)-AS without ZnCl2; and CHX - pretreatment with 2% chlorhexidine solution. AS (Adper Single Bond 2) was applied according to the manufacturer's instructions, and resin composite restorations were built up. After 24 hours, the resindentin blocks were sectioned into specimens (0.8 mm 2 ), and then subjected to mu TBS testing immediately following, or after 6 or 12 months of water storage (WS). The adhesive interface was evaluated by scanning electron microscope. Both mu TBS and FS tests were performed using a universal testing machine (0.5 mm/minute). FS and DC data were submitted to the Student t-test, and mu TBS data were subjected to two-way ANOVA and Tukey's test (alpha= 0.05). Results: DC was not affected by ZnCl2 incorporation into AS (P= 0.2527). Higher FS values were obtained in the group with ZnCl2 added to AS. Regarding mu TBS, the mean of the NT group was statistically higher than that of the ZnCl2 or the CHX groups (P< 0.001), regardless of WS, but the latter groups did not differ from each other. mu TBS at 24 hours was statistically superior to that of 6 and 12 months of WS (P< 0.001).en
dc.description.affiliationSao Leopoldo Mand Inst & Dent Res Ctr, Campinas, SP, Brazil
dc.description.affiliationInst Fed Goiano, Urutai, Go, Brazil
dc.description.affiliationUniv Ctr Cesmac, Maceio, Alagoas, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Sci & Technol Sao Jose dos Campos, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Sci & Technol Sao Jose dos Campos, Sao Jose Dos Campos, SP, Brazil
dc.description.sponsorshipInstitute Federal Goiano
dc.format.extent299-305
dc.identifier.citationAmerican Journal Of Dentistry. Weston: Mosher & Linder, Inc, v. 32, n. 6, p. 299-305, 2019.
dc.identifier.issn0894-8275
dc.identifier.urihttp://hdl.handle.net/11449/195107
dc.identifier.wosWOS:000506724800007
dc.language.isoeng
dc.publisherMosher & Linder, Inc
dc.relation.ispartofAmerican Journal Of Dentistry
dc.sourceWeb of Science
dc.titleIncorporation of ZnCl2 into an etch-and-rinse adhesive system on flexural strength, degree of conversion and bond durability to caries-affected dentinen
dc.typeArtigo
dcterms.rightsHolderMosher & Linder, Inc

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