Five-year Effects of Chlorhexidine on the In Vitro Durability of Resin/Dentin Interfaces

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dc.contributor.authorLoguercio, A. D.
dc.contributor.authorHass, V.
dc.contributor.authorGutierrez, M. F.
dc.contributor.authorLuque Martínez, Íssis Virginia
dc.contributor.authorSzezs, A.
dc.contributor.authorStanislawczuk, R.
dc.contributor.authorBandeca, M. C.
dc.date.accessioned2019-10-16T20:16:10Z
dc.date.available2019-10-16T20:16:10Z
dc.date.issued2016
dc.description.abstractPurpose: To evaluate the effect of an acid containing 2% chlorhexidine (Ac/CHX) or a 2% CHX aqueous solution (Aq/CHX) on the immediate and 5-year bonding properties of resin/dentin interfaces produced by two adhesives. The presence of CHX in these interfaces was also evaluated under micro-Raman spectroscopy. Materials and Methods: Forty-two molars were ground to expose a flat dentin surface. In the control group, the surfaces were etched with conventional phosphoric acid, and Prime&Bond NT (PB) and Adper Single Bond 2 (SB) were applied. In Ac/CHX, an acid containing 2% CHX was applied after adhesive application. In the Aq/CHX group, an aqueous solution of 2% CHX was applied for 60 s after etching. After placing the restoration, specimens were prepared and tested using the microtensile bond strength test (mu TBS, 0.5 mm/min) immediately or after 5 years. For nanoleakage (NL), specimens at each period were immersed in silver nitrate solution and examined by EDX-SEM. In addition, specimens at each period underwent examination for CHX using micro-Raman spectroscopy. Data were submitted to appropriate statistical analysis (alpha = 0.05). Results: After 5 years, NL was more pronounced in the control than in the Ac/CHX or Aq/CHX (p < 0.001). Significant reductions in the mu TBS were observed for all groups; however, they were more pronounced for the control (p < 0.001). CHX was still present in the hybrid layers Ac/CHX or Aq/CHX groups after 5 years. Conclusion: The use of a 2% chlorhexidine-containing acid or the application of an aqueous CHX primer may increase the long-term stability of resin/dentin interfaces.
dc.format.extent8 páginas
dc.fuente.origenFacultad de Medicina
dc.identifier.doi10.3290/j.jad.a35514
dc.identifier.issn1461-5185
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/26565
dc.issue.numeroNo. 1
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final42
dc.pagina.inicio35
dc.revistaJournal of Adhesive Dentistryes_ES
dc.rightsacceso restringido
dc.subjectadhesive systemses_ES
dc.subjectchlorhexidinees_ES
dc.subjectwater sorptiones_ES
dc.subjectnanoleakagees_ES
dc.subjectmicrotensile bond strengthes_ES
dc.subjectlongevityes_ES
dc.subjectresin-dentin interfaceses_ES
dc.subjectmatrix metalloproteinaseses_ES
dc.subjectbond strengthes_ES
dc.subjectclinical-performancees_ES
dc.subjectcollagen degradationes_ES
dc.subjectcysteine cathepsinses_ES
dc.subjectrinsees_ES
dc.subjectadhesiveses_ES
dc.subjectcontaining acides_ES
dc.subjectmmp inhibitorses_ES
dc.subjectnanoleakagees_ES
dc.subjectDentistry, Oral Surgery & Medicinees_ES
dc.subject.ddc610
dc.subject.deweyMedicina y saludes_ES
dc.titleFive-year Effects of Chlorhexidine on the In Vitro Durability of Resin/Dentin Interfaceses_ES
dc.typeartículo
dc.volumenVol. 18
sipa.codpersvinculados1020227
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