Bond strength of denture teeth to denture base resins

Purpose: The study examined the bond strength between 2 types of denture te eth and 3 denture base resins. The denture teeth were untreated, prepared w ith diatorics, or treated with dichloromethane, a solvent. Materials and Me thods: Conventional denture teeth and cross-linked denture teeth were bonde d to either a heat-cured denture base resin, a microwave-cured denture base resin, or a pour-type denture base resin. Compressive load was applied at 45 degrees on the palatal surface of each tooth until fracture. Results: Co nventional resin teeth possessed higher bond strength than cross-linked den ture teeth. The heat-cured denture base resin significantly surpassed the m icrowave-cured denture base resin in bond strength. Both materials were bet ter than the pour-type resin. The application of dichloromethane resulted i n a significantly better improvement in bond strength compared to the use o f diatorics. Conclusion: It is recommended that dichloromethane be applied on the denture teeth ridge-lap area prior to denture base processing.