Electronic Theses and Dissertation

Prosedur dental bleaching merupakan metode pemutihan gigi yang umum dilakukan dengan memanfaatkan bahan kimia seperti karbamid peroksida. Penelitian ini bertujuan untuk mengembangkan gel bleaching berbahan dasar karbamid peroksida 10% yang dikombinasikan dengan nitrogen-doped carbon dots (N-CDs) dari sari belimbing wuluh, serta menganalisis efektivitasnya terhadap perubahan warna pada bovine teeth. Gel bleaching dibuat dengan menggunakan bahan pengental carbopol dan aristoflex dengan penambahan N-CDs. Karakteristik N-CDs diuji menggunakan FTIR dan Uv-Vis, sedangkan gel bleaching dilakukan pengujian pH dan rheologi. Spesimen bovine teeth direndam dalam larutan kopi dan saline selama 7 hari sebelum aplikasi gel bleaching, kemudian dilakukan pengukuran perubahan warna menggunakan kolorimeter. Hasil penelitian menunjukkan bahwa N-CDs berhasil disintesis. Seluruh kelompok gel bleaching pengental carbopol dan aristoflex dengan penambahan N-CDs menunjukkan peningkatan kecerahan warna gigi secara signifikan (p0,05). Uji one way anova menunjukkan tidak adanya perbedaan signifikan antar kelompok perlakuan (p>0,05). Kesimpulannya, penambahan N-CDs pada gel bleaching karbamid peroksida 10% efektif meningkatkan perubahan warna gigi.

Kata kunci : gel bleaching, karbamid peroksida 10%, Nitrogen-doped Carbon Dots (N-CDs), belimbing wuluh, perubahan warna, bovine teeth

The dental bleaching procedure Is a common tooth-whitening method that utilizes chemical agents such as carbamide peroxide. This study aims to develop a bleaching gel based on 10% carbamide peroxide combined with nitrogen doped carbon dots (N-CDs) derived from Averrhoa bilimbi extract, and to analyze its effectiveness in changing the color of bovine teeth. The bleaching gel was formulated using carbopol and aristoflex as thickening agents, with the addition of N-CDs. The characteristics of N-CDs were analyzed using FTIR and Uv-Vis spectroscopy, while the bleaching gels were tested for pH and rheological properties. Bovine teeth specimens were soaked in coffee and saline solutions for 7 days prior to the application of the bleaching gel, followed by color change measurements using a colorimeter. The results showed that the N-CDs were successfully synthesized. All groups of bleaching gel using Carbopol and aristoflex with added N-CDs demonstrated a significant increase in tooth brightness (p0,05). One-way ANOVA testing indicated no significant differences among the treatment groups (p>0,05). In conclusion, the addition of N-CDs to the 10% carbamide peroxide bleaching gel is effective in enhancing tooth color change. Keywords : bleaching gel, 10% carbamide peroxide, nitrogen-doped carbon dots (N-CDs), Averrhoa bilimbi, color change, bovine teeth.