[Effect of light cured sealants for occlusal surfaces on discoloration and plaque accumulation on removable partial...

According to increased surface hardness and decreased solubility, as revealed in laboratory tests, an improved surface-quality of denture-base polymers after glazing with light-polymerized acrylic coating materials could be expected. However, in the present clinical study on 150 dentures half-side treated with light activated coating materials, already after 3 months of use the coated denture-halfs showed more frequently discolouration and increased plaqueaccumulation in comparison with the uncoated control-sides. Scanning microscopic examination revealed an increasing roughness of the glazed surfaces during period of use.