[Protective effect on dentin of acid etching using prepolymerization of an enamel-dentinal adhesive (SEM study)]

In this report the Authors examined the protective action obtained on the dentin by using a varnish before acid etching. Sectional surfaces of twelve extracted teeth were observed by SEM, analysing the cover, the polymerization and the efficiency of dentine protection. The result show the effectiveness of the applied technique.