Electronic Theses and Dissertation

Penelitian ini bertujuan untuk mengetahui pengaruh pasta pembersih gigi tiruan berbahan dasar minyak nilam (Pogostemon cablin Benth) terhadap kekasaran permukaan resin akrilik heat cured dengan variasi durasi penyikatan. Penelitian eksperimental laboratoris ini menggunakan rancangan post-test only control group design dengan lima kelompok perlakuan, yaitu tiga kelompok penyikatan menggunakan pasta minyak nilam 30% selama 6, 13, dan 27 menit, satu kelompok kontrol menggunakan akuades, serta satu kelompok tanpa penyikatan. Sediaan pasta pembersih gigi tiruan dievaluasi melalui uji organoleptik, pH, viskositas, dan pembentukan busa sebelum dilakukan uji kekasaran pada spesimen resin akrilik menggunakan surface roughness tester. Data dianalisis menggunakan uji Kruskal-Wallis. Hasil penelitian menunjukkan adanya perbedaan signifikan antar kelompok p = 0,009 (P< 0,05). Nilai kekasaran permukaan meningkat seiring dengan lamanya durasi penyikatan, yaitu 0,073 μm (6 menit), 0,093 μm (13 menit), dan 0,126 μm (27 menit). Seluruh hasil masih berada di bawah batas ideal kekasaran permukaan resin akrilik heat cured (≤ 0,2 μm). Kesimpulannya, penggunaan pasta pembersih gigi tiruan minyak nilam berpengaruh terhadap peningkatan kekasaran permukaan resin akrilik heat cured seiring dengan bertambahnya durasi penyikatan, namun efeknya masih dalam batas yang dapat ditoleransi.

Kata kunci: Minyak nilam, antimikroba, pasta pembersih gigi tiruan, resin akrilik heat cured, kekasaran permukaan.

This study aimed to evaluate the effect of a denture cleaning paste formulated with patchouli oil (Pogostemon cablin Benth) on the surface roughness of heat cured acrylic resin with variations in brushing duration. This laboratory-based experimental study employed a post-test only control group design consisting of five groups: three brushing groups using 30% patchouli oil paste for 6, 13, and 27 minutes, one control group using distilled water, and one group without brushing. The denture cleaning paste formulation was assessed through organoleptic, pH, viscosity, and foaming tests prior to the surface roughness evaluation, which was conducted using a surface roughness tester. Data were analyzed using the Kruskal–Wallis test. The results showed a significant difference among groups (p = 0.009, p < 0.05). Surface roughness values increased with longer brushing durations, measuring 0.073 μm (6 minutes), 0.093 μm (13 minutes), and 0.126 μm (27 minutes). Nevertheless, all values remained below the ideal threshold for heat cured acrylic resin surface roughness (≤ 0.2 μm). In conclusion, the use of patchouli oil based denture cleaning paste affects the increase in surface roughness of heat cured acrylic resin in proportion to brushing duration; however, the effect remains within clinically acceptable limits. Keywords: Patchouli, antimicrobial, denture cleaning paste, heat cured acrylic resin, surface roughness.