Abstract
A divergence of opinion exists regarding the efficacy of the use of an intermediate or unfilled resin in the acid-etch technique of restorative dentistry. For example, the manufacturers of Concise (3M Co., Dental Products Div., St. Paul, Minn.), Adaptic (Johnson and Johnson Dental Products Co., East Windsor, N.J.), and Silar (3M Co., Dental Products Div.) endorse the use of an intermediate resin, while Isopast (Vivadent [USA] Inc., Buffalo, N.Y.) is recommended by the manufacturer for use directly on the etched enamel surface. The main concerns are retention and sealing, which are directly related to the capacity of the resin to wet and thus adapt to the acid-etched enamel. In turn, a good indication of proper wettability is provided by the formation of resin tags in the etched enamel. The purpose of this study was to examine tag formation of selected composite and intermediate resins through the medium of scanning electron microscopy (SEM).
Published Version
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