Skripsi
PENGARUH JENIS ASAM PADA CUKA PEMPEK TERHADAP KEKASARAN PERMUKAAN BASIS GIGI TIRUAN RESIN AKRILIK
Background: Cuka pempek is a traditional food from Palembang that contains acid as one of its components. Continuous consumption of cuka pempek can affect the surface roughness of heat-cured acrylic resin denture bases due to its ability to absorb liquids. Objective: To determine the effect of the types of acid in cuka pempek on the surface roughness of heat-cured acrylic resin denture base. Method: Thirty heat cured acrylic resin plates measuring 65mm x 10mm x 2.5mm were divided into 3 groups. The initial surface roughness (pretest) was measured using a surface roughness tester. The plates were soaked in group I (cuka pempek with tamarind acid), group II (cuka pempek with acetic acid), and group III (control) with distilled water. Soaking was done for 30 hours in an incubator at 37°C. Final surface roughness measurements (post-test) were taken. Results: Normality test results using the Shapiro-Wilk test and homogeneity test using the Levene test indicated that the data were normally distributed and homogeneous. Paired t-tests showed significant differences in all groups. One-way ANOVA results indicated significant differences. The post hoc Bonferroni test results show a significant difference between cuka pempek based on tamarind and based on acetic acid in relation to aquadest, whereas there is no significant difference between cuka pempek based on tamarind and based on acetic acid. Conclusion: There is an effect of different types of acids in cuka pempek on the surface roughness of heat-cured acrylic resin denture bases.
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