Pimenta, Luiz André FreireFontana, Ueide Fernando [UNESP]Cury, Jaime AparecidoSerra, Mônica CamposElderton, Richard J.2014-05-272014-05-271998-06-01Quintessence International, v. 29, n. 6, p. 363-367, 1998.0033-6572http://hdl.handle.net/11449/65455Objective: The purpose of this in vitro study was to evaluate some forms of preventing or avoiding demineralization within enamel cavity walls adjacent to amalgam restorations. Method and materials: Third molar teeth were sectioned to obtain 72 specimens, divided into one control and five experimental groups: amalgam only; varnish plus amalgam; acidulated phosphate fluoride plus amalgam; adhesive amalgam; glass-ionomer cement plus amalgam; control (amalgam only, not subjected to a demineralization challenge). The experimental groups were subjected to pH and thermal cycling and then submitted to enamel hardness determinations. Results: Significant differences between the treatment groups revealed that the bonded amalgam technique offered the best resistance to demineralization. The use of cavity varnish resulted in greater mineral loss than amalgam placed alone. Conclusion: The use of an adhesive system, glass-ionomer cement, or acidulated phosphate fluoride under amalgam restorations may interfere with development of secondary caries.363-367engAmalgam restorationBonded amalgam restorationDemineralizationMicroleakageSecondary cariesacidulated fluorophosphatebiomedical and dental materialscopalitedental alloydispersalloyglass ionomerPanavia EXphosphatePhotac BondPhotac-Bondplant resinresin cementchemistrycomparative studydental bondingdental cariesdental surgeryenamelhardnesshumanmethodologymolar toothtooth diseaseAcidulated Phosphate FluorideDental AlloysDental AmalgamDental BondingDental CariesDental Cavity LiningDental EnamelDental MaterialsDental Restoration, PermanentGlass Ionomer CementsHardnessHumansMolarPhosphatesResin CementsResins, PlantTooth DemineralizationArtigoWOS:000074200200004Acesso restrito2-s2.0-0032085583