title: Marginal leakage with different composite restorative materials in vitro. Effect of cavity design.
abstract: In this preliminary study the degree of marginal leakage was assessed for different cavity designs using both ultra violet-curing and self-curing composite restorative materials and sealants. Butt joint restorations placed in etched and sealant primed cavities failed to prevent leakage. Both saucer-shaped and funnel-shaped cavities and cavities with rounded margins were able to prevent leakage when the restorations were bonded to etched and sealant primed peripheral enamel. Further, less than 1 mm of gingival enamel available for bonding seemed to be sufficient in most instances to prevent leakage.
mesh_terms: D003188:Composite Resins; D001840:Dental Bonding / Q000379:methods; D003737:Dental Cavity Preparation / Q000379:methods; D003793:Dental Restoration, Permanent
chemical_list: D003188:Composite Resins