The effect of essential oils on microbial biofilm on denture base surface

Abstract

Nowadays, there is a globally effort to find solutions to replace the synthetic drugs with the therapeutic power of natural products to reduce the percentage of many side effects resulted from conventional treatment. The main objective of this research is to investigate the antimicrobial action of essential oils against grown microorganisms on the surface of acrylic resin denture base materials. In terms of methodology, four types of natural oils (Linseed, Harmal, Radish and Black seed) have been used to investigate their antimicrobial effects against the biofilm formation of three types of bacteria and one fungus on the surface of denture base material. Totally, 30 specimens (10mm×10mm×2mm) prepared from the heat cured acrylic resin denture base materials are provided. One-way ANOVA has been utilized in data analysis at P ≤ 0.05 or 0.01, also t- test is used for independent samples. According to the results, all the concentrations of radish oil and black seed oil have shown a significant effect on bacteria. Regarding its effect on fungus, only radish oil has shown a significant effect against Candida albicans. Linseed oil is less effective than other types of essential oils used in this study particularly against Streptococcus pyogenesa. As a result, all the tested natural oils have shown antibacterial effect, while only radish oil has shown significant effect against candida albicans.