Sodium Hypochlorite as Fluorotic Dentin Pretreatment of Two-Step Self-Etch Adhesive with Silver Nanoparticle: Atomic Force Microscope and Adhesive Microtensile Bond Strength Evaluation

摘要: The objective of this work was to evaluate the effect pretreatment with commercial sodium hypochlorite, 5.25%, a self-etch adhesive (Optibond Versa) in its original formula and incorporation silver nanoparticles (NaAg) on fluorotic dentin. 240 human molars were classified according fluorosis severity Thylstrup-Fejerskov Index (TFI) subdivided into three study subgroups technique: ( ) (SE) control subgroup; NaOCl/SE + NaAg subgroup. nanostructural characteristics observed by AFM, μTBS tested, hybrid layer formation SEM. One-way analyses variance (ANOVA) Tukey-Kramer post hoc tests used. No statistically significant differences found roughness values any studied. Remnants smear detected areas devoid resin tags SEM images samples bonded subgroup 2, contrast 3. difference between results greater number failures observed. show that technique 5.25% NaOCl self-adhesive system do not produce surface more adequate for better adhesion.