Abstract
The present study discusses the efficacy of precious metal surface modification methods with heat curing resin containing 4-META, and also methods for preventing marginal leakage at the finish lines of metal dentures.
1. Tin electro-plating by KuraAce-Mini modification method and Adlloy modification with forming SnO and Ga2O3 on the modified surfaces were effective metal surface modifications with the heat curing resin. There were no modification effects with tin electro-plating by KuraAce, Silicoater System, Vprimer, and M-primer.
2. The marginal leaking at the finish lines can (be) prevented for finish areas of sloped type by (employing the modification methods mentioned above).
3. The stress induced by polymerization and thermal shrinkage is a large driving force to destroy the adhesion interface between the metal frame and the denture resin.
