Flexural strengh of three autopolymerized acrylic resins used in fixed provisional

Abstract

It was evaluated three different kinds of auto polymerized acrylic resins for flexural strength (Dencor®, DuralayTM, PatternTM) processed in three different forms: immediately after laboratory operations (mif); 30 days immersed in water (ia); and equal parts of polymers mixed (mp). After that nine experimental groups were formed, each one with ten body test (n = 10): I Dencor® mif; II DuralayTM mif; III PatternTM mif; IV Dencor® ia; V DuralayTM ia; VI PatternTM ia; VII Dencor®- PatternTM mp; VIII Dencor®- DuralayTM mp; and IX DuralayTM and Pattern TM m. They were submitted to the flexural test in three points. The Pattern™ and Dencor® resins presented bigger averages in the flexural strength test. The results submitted to a variance analysis showed some differences among the groups (p = 0,000). The materials did not comply with ISO 10477/1998 recommendations.