Abstract
In this study radiopaque self-curing acrylic resins were prepared by adding ZrO2 micro particles to the polymer beads, then their radiopacities, physical properties, discoloration and adherence of oral bacteria were evaluated for clinical use.Acrylic resin containing more than 21.3wt% ZrO2 demonstrated sufficient radiopacity, but the sterngth decreased as ZrO2 contents increased.Therefore, the most desirable ZrO2 content for clinical application was estimated to be about 21.3wt%.The other physical properties, discoloration and adherence of oral bacteria did not significantly differ from those of commercially available self-curing resins.This suggests that the present method using polymer beads polymerized with ZrO2 would more effectively obtain high radiopacity compared with that obtained by mixing ZrO2 powder with polymer beads.
