PENGARUH POTASSIUM PEROXYMONOPERSULFATE TERHADAP PERUBAHAN WARNA BASIS GIGI TIRUAN THERMOPLASTIC NYLON

VITA LEVINA HIDAYATI, drg.Titik Ismiyati, M.S., SpPros(K)

2013 | Skripsi | PENDIDIKAN DOKTER GIGI

Thermoplastic nylon merupakan basis gigi tiruan derivat diamine dan dibasic acid monomer yang ideal digunakan sebagai gigi tiruan karena memiliki fleksibilitas dan estetika yang baik serta tidak menimbulkan alergi. thermoplastic nylon memiliki sifat penyerapan air yang tinggi yang menyebabkan terjadinya diskolorisasi. Potassium peroxymonopersulfate merupakan senyawa yang terdiri dari triple salt, berwarna putih, granular, serta larut di dalam air. Potassium peroxymonopersulfate sering digunakan sebagai komponen pembersih gigi tiruan pada pembersih golongan alkaline peroksida. Potassium peroxymonopersulfate secara kimiawi merupakan turunan dari hidrogen peroksida, di dalam air terurai menjadi radikal bebas HO2* dan O* yang merusak pigmen warna. Tujuan penelitian ini adalah untuk mengetahui pengaruh lama perendaman thermoplastic nylon dalam kandungan pembersih gigi tiruan potassium peroxymonopersulfate. Subyek penelitian berupa 28 sampel thermoplastic nylon berbentuk persegi panjang berukuran 25 x 15 x 2,5 mm, dibagi menjadi 4 kelompok perlakuan. Kelompok pertama sebagai kontrol direndam dalam aquadestilata. Kelompok kedua direndam dalam larutan potassium peroxymonopersulfate selama 12 jam. Kelompok ketiga direndam dalam larutan potassium peroxymonopersulfate selama 24 jam. Kelompok keempat direndam dalam larutan potassium peroxymonopersulfate selama 36 jam. Selanjutnya dilakukan pengukuran perubahan absorbansi menggunakan spektrofotometer. Data yang diperoleh dianalisis menggunakan ANOVA satu jalur dilanjutkan dengan uji Tukey. Hasil penelitian menunjukkan bahwa terdapat perbedaan perubahan warna yang signifikan pada basis gigi tiruan thermoplastic nylon dalam kandungan pembersih gigi tiruan potassium peroxymonopersulfate (p < 0,05). Kesimpulan dari penelitian ini adalah kandungan pembersih gigi tiruan potassium peroxymonopersulfate berpengaruh terhadap perubahan warna pada basis gigi tiruan thermoplastic nylon, namun pada perendaman selama 12 jam masih aman dan tidak mengubah estetika dari basis gigi tiruan thermoplastic nylon.

Thermoplastic nylon denture bases are derivatives from diamine and dibasic acid monomers that has ideal features as dentures for it’s great flexibility and aesthetics, also it doesn’t cause allergies. Thermoplastic nylon has a high water absorption properties that can cause discoloration. Potassium peroxymonopersulfate is present as a component of a triple salt, free flowing, white granular and soluble in water. Potassium peroxymonopersulfate are active ingredients of the alkaline peroxide denture cleanser. Chemically, potassium peroxymonopersulfate are derivatives of hydrogen peroxide, which breaks down in water into free radicals (HO2 * and O*) that damages the pigment color. This study is aimed to determine the color stability of thermoplastic nylon denture againts the immersion time in potassium peroxymonopersulfate. Subjects of this study were 28 samples of thermoplastic nylon, rectangular shaped, with dimensions of 25 x 15 x 2.5 mm and were divided into 4 groups, containing 7 samples each. The first group, as control was immersed in aquadestilata. The second group was immersed in denture cleanser solution containg potassium peroxymonopersulfate for 12 hours. The third group was immersed in denture cleanser solution containg potassium peroxymonopersulfate for 24 hours and the fourth group was immersed in denture cleanser solution containg potassium peroxymonopersulfate for 36 hours. The absorbance changes of all samples were measured with spectrofotometer. Data obtained were then analyzed using ANOVA followed by Tukey's test. Results showed that there were significant differences in color stabilty of thermoplastic nylon on immersion of denture cleanser solution containing potassium peroxymonopersulfate (p <0.05). The conclusion of this study is there were differences in color stability of thermoplastic nylon denture base on immersion of denture cleanser solution containing potassium peroxymonopersulfate, but immersion within 12 hours are still esthetically safe.

Kata Kunci : thermoplastic nylon, potassium peroxymonopersulfate, perubahan warna