This study evaluated the effect of organic solvent (acetone or ethanol) on the microtensile bond strengths (MTBS) of an adhesive system applied to dry and moist dentin. Sixteen extracted human third molars were ground to expose a flat occlusal dentin surface and acid etched for 20 seconds (20% phosphoric acid gel, Gluma Etch 20 Gel, Heraeus/Kulzer). After rinsing the acid etchant, an ethanol-ba...

controlled by the organic content of the enamel. Marshall, Olson, and Lee4 in 1975 studied acid etching for pit and fissure sealants without precleaning the teeth and found significant advantage in having a clean, debris-free, and uniformly roughened surface for good sealing. They proposed longer etching time. Other studies proposed using other materials to solve this problem of debris. In 1979...

Background and Aim: This study aimed to evaluate the effect of repeated bonding by self-etching primers (SEPs) and a conventional phosphoric acid-etchant on shear bond strength (SBS), adhesive remnant index (ARI), and enamel morphology at different debonding time points. Materials and Methods: In this experimental study, 120 premolars were randomly divided into six groups of 20. In the first t...