C. albicans adherence in microwave-cured acrilic resins after surface finishes

OBJECTIVES: The superficial features of acrilic resins can allow microorganisms adherence. Smooth surfaces could be obtained through mechanical and chemical polishments. This study aims on evaluating the relationship between C. albicans and the microwave-cured acrylic resins after different surface finishes. METHODS: forty microwave-cured acrylic resin Vipi Wave samples were divided into 4 groups according to the surface finishes: G1 (control group) – no treatment; G2 – chemical polishment, without pre-treatment; G3 – pre-treatment and mechanical polishment; G4 – pre-treatment and chemical polishment. The samples were immersed in Sabouroud Broth with the yests, kept in 37°C and dyied with Replanic S (Iodontec). Ten points in each sample were analysed in an optic microscope (40x) according to patterns. RESULTS: the mean values for each group were: G1 = 3,19(a); G2 = 3,42(a); G3 = 2,65(b); G4 = 2,68(b). Data were analysed by using ANOVA and Tuckey Test, and there were no statistical difference between G3 and G4. Moreover, the results with G3 and G4 were better than the ones from G1 and G2. CONCLUSION: according to the results, this in vitro study suggested that the surface roughness can promote the retention process of C. albicans in microwave-cured acrilic resins. When the pre-treatment is done, it may significativelly reduce the levels of C. albicans adherence.