Evaluation of Surface Treatment on The Surface Roughness and Candida Albicans Adhesion of Denture Base Materials in Common Beverages

Objectives: This study compares the surface roughness and microbial adhesion of the denture base materials(DBMs) on which various surface treatments are applied and immersed in beverages. Materials and Methods: 240 disc-shaped specimens were prepared from different DBMs; autopolymerized acrylic resin, heat-polymerised acrylic resin and urethan dimethacrylate resin. The samples were divided into two main groups according to applied surface treatment methods; conventional polishing(Cp) and optiglaze (Og) surface sealant agent. Subgroups were created according to the beverage (distilled water, black tea, coffee, and cola) (n=10). After the initial surface roughness measured, and the measurement was repeated on the 14th day. One sample of each group was submitted to bacterial adhesion and scanning electron microscopy(SEM). Data were statistically analysed with Kruskall Wallis and t-test by using SPPS 22.0. Results: When the Ra0 and Ra1 values were compared, the mean Ra values increased for all groups. Statistically significance was found between the DBMs for Og compared to Cp(p<0.05). Black tea beverage had been shown to affect all DBMs treated with Og. The highest C.albicans adhesion was found in GroupI-Cp which was kept in cola whereas the lowest adhesion was shown in GroupI-Og, aged in distilled water. Conclusions: Og surface sealant may be applied as an alternative to Cp. However, the surface roughness of DBMs increase dependent on the consumption habits and microbial adhesion occurs. © (2025), (Cumhuriyet University Faculty of Dentistry). All rights reserved.