Electronic Theses and Dissertation

Bahan berbasis peroksida yang umumnya digunakan dalam prosedur dental bleaching dilaporkan memiliki beberapa efek samping seperti iritasi gingiva dan peningkatan sensitivitas gigi yang disebabkan oleh radikal bebas yang dihasilkan selama prosedur dental bleaching. Penelitian mengenai nanomaterial dilakukan dalam upaya meminimalkan efek samping yang ditimbulkan setelah prosedur dental bleaching, salah satunya yaitu nitrogen-doped carbon dots yang merupakan salah satu bahan nanomaterial baru subkelas nanopartikel berbasis karbon yang aplikasinya sudah banyak dikembangkan salah satunya yaitu fotokatalisis. Peranan bahan fotokatalis dalam bahan bleaching berpotensi dapat meningkatkan efektivitas hidrogen peroksida dalam pemutihan gigi. Penelitian ini dilakukan untuk mengetahui efektivitas penambahan N-CDs dalam komersial karbamid peroksida 10% sebagai bahan dental bleaching dengan menggunakan 36 bovine teeth yang sebelum prosedur bleaching dibagi menjadi dua kelompok, yaitu perendaman dalam larutan kopi dan larutan saline. Setiap kelompok dibagi menjadi dua sub kelompok lainnya (n=9) berdasarkan pengaplikasian bahan bleaching (karbamid peroksida 10% dan dengan penambahan N-CDs). Prosedur dental bleaching dilakukan dengan pengaplikasian bahan bleaching lalu disinari menggunakan LED bleaching accelerator selama 20 menit setiap sesi klinis, dan dimasukkan ke dalam inkubator selama 3 jam. Prosedur ini diulangi selama 7 hari dan nilai CIELAB L*a*b* diukur sebelum dan sesudah prosedur bleaching menggunakan kolorimeter. Hasil menunjukkan adanya perubahan warna bovine teeth yang signifikan setelah diaplikasikan bahan bleaching karbamid peroksida 10% dengan penambahan N-CDs ataupun tanpa penambahan.

Kata kunci: Dental Bleaching, Nitrogen-doped Carbon Dots, Perubahan Warna

Peroxide-based materials commonly used in dental bleaching procedures are reported to have several side effects such as gingival irritation and increased tooth sensitivity caused by free radicals generated during dental bleaching procedures. Research on nanomaterials is carried out in an effort to minimize the side effects caused after dental bleaching procedures, one of which is nitrogen-doped carbon dots which is one of the new nanomaterials of the carbon-based nanoparticle subclass whose applications have been widely developed, one of which is photocatalysis. The role of photocatalyst materials in bleaching materials can potentially increase the effectiveness of hydrogen peroxide in teeth whitening. This study was conducted to determine the effectiveness of the addition of N-CDs in 10% commercial carbamide peroxide as a dental bleaching material using 36 bovine teeth which before the bleaching procedure were divided into two groups, namely immersion in coffee solution and saline solution. Each group was divided into two other sub-groups (n=9) based on the application of the bleaching agent (carbamide peroxide 10% and with the addition of N-CDs). The dental bleaching procedure was performed with the bleaching agent applied and then irradiated using an LED bleaching accelerator for 20 minutes each clinical session, and placed in an incubator for 3 hours. The procedure was repeated for 7 days and CIELAB L*a*b* values were measured before and after the bleaching procedure using a colorimeter. Results showed significant discoloration of bovine teeth after application of 10% carbamide peroxide bleaching agent with or without the addition of N-CDs. Keywords: Dental bleaching, Nitrogen-doped carbon dots, color change