Bonding Performance of Universal Adhesive Systems Applied in Etch-and-Rinse and Self-Etch Strategies on Natural Dentin Caries

• DOI: 10.2341/17-252-l
• Publication Date: 2019-08-28T19:30:37Z
• Authors: V Hass; AFM Cardenas; FSF Siqueira; RR Pacheco; PMW Zago; DO Silva; MC Bandeca; AD Loguercio
• Keywords: Smear layer; Distilled water

This study investigated the bonding performance of three universal adhesive systems applied using etch-and-rinse (ER) or self-etch (SE) strategies on natural dentin caries.Sixty human third molars were selected for this study: 30 naturally carious (CAD) and sound (SD) teeth. The surfaces exposed, teeth randomly assigned to each evaluated system: Scotchbond Universal (SBU), Futurabond U (FBU), Prime&Bond Elect (PBE) an strategy: ER SE. following manufacturer's instructions, restored a resin composite (Filtek Supreme Ultra, 3M). After 24 hours (distilled water at 37°C), samples sectioned microtensile bond strength analysis (μTBS), micro-Raman spectroscopy evaluate degree conversion within hybrid layer (DC), scanning electronic microscopy (SEM) describe morphology layer. μTBS DC data analyzed three-way variance Tukey's test means comparison (α=0.05). SEM images qualitatively.Reduced values observed when comparing CAD with SD, regardless system strategy (p<0.0001). SBU showed statistically higher both substrates Furthermore, greater integrity tag formation compared FBU PBE. Mean SD in SE mode, whereas mean PBE (p<0.001).Bonding is reduced caries-affected substrate. was not able improve systems. Improved obtained system.