Clinical results of the measurement of occlusal wear of complete dentures.

This study supports the clinical impression that acrylic resin teeth wear down faster than porcelain teeth but does not support Myerson's view that the total wear of acrylic resin opposing porcelain teeth is less than that of acrylic resin opposing acrylic resin teeth. There was a wide range of rate of wear in acrylic resin teeth opposing acrylic resin teeth. Dentures of the four subjects in the porcelain-only group showed considerably less wear. The dentures with acrylic resin teeth opposing porcelain teeth showed the same general trend, i.e., a high rate of wear for the acrylic resin teeth with very little for the porcelain teeth. Conclusive proof is given for the differing wear rates of acrylic resin and porcelain teeth when opposing like materials.