From acid-etched enamel to universal adhesives — what the resin actually grabs onto, why eight generations exist, and why every modern restoration lives or dies by its hybrid layer
BDS · Dental Materials · TOPIC DM-08 Adhesion, Bonding Agents, Etching From acid-etched enamel to universal adhesives — what the resin actually grabs onto, why eight generations exist, and why every modern restoration lives or dies by its hybrid layer Direct restorative dentistry in 2026 is adhesive dentistry . Amalgam needed only mechanical retention — undercuts, dovetails, a flat pulpal floor. Composite needs the resin to hold onto the tooth at a molecular scale , because there is no undercut to fall back on. The science that makes that possible is adhesion — the set of physic…
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