Non-polar micro-coating on acrylic denture material for reducing the incidence of dental biofilm formation

Abstract

Aim: Dental plaque formation is a major health risk associated with prolonged worn
acrylic dentures. The dental biofilm usually develops when improper cleaning and
sterilizing of dentures is achieved. The aim of this study was to improve the
acrylic material surface properties for minimizing the incidence of dental plaque
formation on acrylic dentures by lowering the surface energy.
Method: The acrylic (polymethylmethacryate) surface modification was achieved by
applying a non-polar micro-coating on acrylic samples which was the dental
baseplate wax. Two experimental groups used in this study, the control and the
coated groups with 10 samples each. The surface analysis was conducted using the
contact angle's technique. All samples soaked in salivary solution for 5 days. The
methylene blue dye material used as an indicative for the dental plaque formation.
Results and conclusion: The surface analysis showed a significant decrease in the
surface hydrophilicity of the coated group by increasing the water contact angle
degree values (P-value<0.05). The microscopic analysis by visual inspection
showed a reduced formation of the dental biofilm on the acrylic samples. Within
the limitations of this study, the suggested coating material can possibly reduce
the incidence of the dental biofilm formation on acrylic dentures.