The most used denture base materials is heat cured acrylic resin. The disadvantages of acrylic resin are easy to absorb water and porosity that can increase surface roughness. The surface roughness can facilitate the attachment of microorganisms and accumulation of plaque. The cleansing of mechanical denture use electric toothbrush and denture cleanser paste. This paste uses natural materials from robusta coffee beans that decrease surface roughness. To determine the effectivity of robusta coffee beans paste as a denture cleanser to the surface roughness of heat cured acrylic resin. This study was an experimental laboratory with the research design the post test only control group design. Total sample of 36 samples in size (65 x 10 x 2,5) mm which consisted of 4 groups: control group without brushing, group A brushed with electric toothbrush and a placebo paste, group B brushed with electric toothbrush and robusta coffee beans paste 25%, and group C brushed with electric toothbrush and robusta coffee beans paste 50%. Brushing was done for 22 minutes, then measured the surface roughness of dentures. Robusta coffee bean paste was less effective as a denture cleanser agent against the surface roughness of the heat cured acrylic resin. Robusta coffee beans paste 50% can be used as a denture cleanser.
Keyword: acrylic resin, electric toothbrush, robusta coffee bean paste, surface roughness
Acrylic resins are frequently used as the basic materials of dentures in daily dental practices. Submersion of dentures in disinfectant is usually done by denture users to prevent plaque accumulation. Red betel leaf decoction and essential oils of red betel leaf 10% and 25% can be used as an alternative natural disinfectant contain polyphenols, because it can inhibit the growth of Candida albicans which is commonly found in prosthesis denture users. On the other hand, the polyphenols of red betle leaves was predicted can affect the roughness and discoloration of acrylic resin. The purpose of this study was to determine the differences in surface roughness and discoloration of heat cured acrylic resin submersed in decoction of red betel leaf and essential oil of red betel leaf 10% and 25%. This study was a laboratory experimental with pre and post test group design research.measuring surface roughness value with surface roughness TR 220 and discoloration value with color reader TCR 200. Conclusion: there is a difference in surface roughness and discoloration of acrylic resin that is submersed in decoction of red betel leaves and essential oils of red betel leaf 10% and 25%.
Denture stomatitis is inflammation of the oral mucosa in contact with the denture base caused by the fungus Candida albicans. Denture stomatitis can be prevented by cleaning the dentures either mechanically or chemically. Mangosteen peel extract has been shown to inhibit the growth of C. albicans, but its effectiveness as a denture cleaning agent needs to be improved. One way to increase effectiveness is by combining chemical cleansing and mechanical cleansing through effervescent tablets. The aim of the study was to determine the effectiveness of mangosteen peel extract effervescent tablets as an acrylic denture cleaner against C. albicans. Previously, the effervescent tablets of mangosteen peel extract were made with concentrations of 30% and 60%. Heat cured acrylic resin samples were incubated into a test tube containing C. albicans suspension for 24 hours at 37oC. Furthermore, the samples were immersed in effervescent tablets of mangosteen peel extract for 15 and 30 minutes. The number of C. albicans cells was counted using a spectrophotometer. The results showed that there was a significant reduction in the number of C. albicans cells attached to the plate surface after immersion in 30% and 60% effervescent tablets of mangosteen peel extract (p <0.05). Mangosteen peel extract effervescent tablets 60% more decreased the number of C. albicans cells. The duration of immersion did not show significantly different results (p> 0.05). Effervescent tablets of 60% concentration of mangosteen peel extract soaked for 15 minutes were the most effective as an acrylic resin denture cleaner against C. albicans.
Continuous use of dentures can hinder the cleaning process by the tongue and saliva, resulting in denture stomatitis. The main factor that causes denture stomatitis is the presence of Candida albicans. Green tea dregs and rosella tea dregs still contain compounds that have antifungal properties. Based on previous research, it was stated that green tea waste still contained polyphenols, flavonoids, gallic acid, catechins, EGCG, as well as rosella pulp also contained anthocyanins and phenolics. The presence of the following ingredients means that each infusion can reduce the amount of C. albicans growth. This research is a laboratory experimental study with 54 samples divided into 9 groups. The research group consisted of soaking samples of acrylic resin contaminated with C. albicans for 7 hours in the control group (sterile distilled water) and the treatment group, namely steeping green tea dregs with concentrations of 25%, 50%, 75%, 100% and rosella tea dregs steeping 25%, 50%, 75%, 100% which were then tested by spectrophotometer to see the absorbance of C. albicans. The data obtained were analyzed by ANOVA showing p0.005 so that the LSD test continued, it could be seen that there were significant differences between each treatment group and the control group, which means that the steeping of green tea dregs and the steeping of rosella tea dregs at concentrations of 25%, 50%, 75%, 100% affected the growth of C. albicans on heat-cured acrylic resin, but between groups of various concentrations of steeping tea dregs did not show a significant effect.
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