Methods: Specimens were divided into three groups (n=10), according to the PTBAEMA concentration: 0% (control), 5% and 10%. The water contact angle measurements were performed to characterize the surface hydrophobicity of the specimens, using an automated goniometer (Ramé-hart 200). Measurements in two different locations were made for each specimen. Data were analyzed by one-way ANOVA and Tukey’s test, at 5% of significance.
Results: Contact angle values of specimens containing PTBAEMA were lower than those measured on control group. Significant differences (P< .05) were detected among the groups (Group 0%= 57.3°±2.2A, Group 5%= 28.7°±3.2B, Group 10%= 44.3°±3.9C).
Conclusions: It was observed that PTBAEMA incorporation decreased the hydrophobicity of acrylic resin surfaces, demonstrated by the contact angle decrease. Thus, incorporating PTBAEMA into acrylic resins could be a possible alternative for the prevention of denture stomatitis.
Keywords: Antimicrobials, Dental materials, Polymers, Prosthodontics and Surfaces