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"ABSTRAKPenelitian ini bertujuan untuk mengetahui efektivitas karbamid peroksida 10% dan 15% dalam memutihkan gigi terdiskolorasi ekstrinsik oleh kopi. Tiga puluh dua gigi premolar manusia direndam dalam larutan kopi selama 8 hari untuk mendapatkan diskolorasi ekstrinsik kopi sebagai warna dasar. Pemutihan gigi dilakukan selama 14 hari. Warna diukur menggunakan sistem CIE dan sistem VITAPAN Classical. Dihasilkan kedua konsentrasi tersebut efektif dalammemutihkan gigi terdiskolorasi ekstrinsik kopi. Secara statistik tidak terbukti perbedaan efektivitas karbamid peroksida 10% dan 15% apabila diukur menggunakan sistem CIE. Namun pada hari ke-7 pengukuran dengan sistem VITAPAN Classical terdapat perbedaan efektivitas antara kedua konsentrasi tersebut.

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ABSTRACTThis study was to determine the effectiveness of 10% and 15% carbamide peroxide against extrinsic discoloration by coffee. Thirty-two human premolar teeth were immersed into coffee solution for 8 days to obtain extrinsic discoloration as base colors. Whitening process had done for 14 days. Color was measured by CIE and VITAPAN Classical color systems. The results aproved that both concentrations were effective againstextrinsic tooth discoloration by coffee. There was nosignificant effectiveness difference between both concentration by CIE color system measurement. However on day 7 there was significant effectiveness difference between both concentration by VITAPAN Classical color system measurement."

"Latar belakang: Resin komposit nanofill dan bulkfill adalah restorasi estetik yang banyak digunakan untuk gigi anterior dan posterior. Meskipun demikian, pengaruh paparan obat kumur klorheksidin 0,2% dan povidone iodine 1% maupun bleaching karbamid peroksida 10% lebih sedikit dibandingkan jenis resin komposit lainnya. Oleh sebab itu, dilakukan pengujian perubahan warna nanofill dan bulkfill oleh aplikasi bleaching karbamid peroksida 10% setelah paparan obat kumur klorheksidin 0,2% dan povidone iodine 1%. Tujuan: Menganalisa pengaruh bleaching karbamid peroksida 10% setelah paparan obat kumur klorheksidin 0,2% dan povidone iodine 1% terhadap perubahan warna nanofill dan bulkfill. Metode: Spesimen resin komposit nanofill dan bulkfill (n=24) dibagi menjadi 4 kelompok, kemudian direndam dalam obat kumur klorheksidin 0,2% (n=6) dan povidone iodine 1% (n=6) selama 2 menit/hari dalam waktu 2 minggu, lalu diaplikasikan bleaching karbamid peroksida 10% selama 4 jam/hari dalam waktu 14 hari. Pengukuran warna dilakukan di awal, setelah perendaman dalam obat kumur dan setelah bleaching menggunakan colorimeter. Hasil: Perubahan warna nanofill dan bulkfill setelah perendaman klorheksidin 0,2% dan aplikasi bleaching berbeda bermakna (p≤0,05). Akan tetapi, tidak ditemukan perbedaan bermakna (p>0,05) pada perubahan warna nanofill dan bulkfill setelah perendaman povidone iodine 1% dan aplikasi bleaching. Perbedaan bermakna (p≤0,05) juga ditemukan antara nanofill dan bulkfill yang terpapar obat kumur yang berbeda. Sedangkan perbedaan tidak bermakna (p>0,05) ditemukan pada nanofill dan bulkfill yang terpapar obat kumur yang sama kecuali klorheksidin 0,2%. Kesimpulan: Povidone iodine 1% menghasilkan perubahan warna yang lebih besar pada resin komposit. Resin komposit nanofill mengalami perubahan warna yang lebih besar dibandingkan resin komposit bulkfill.

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Background: Nanofill and bulkfill composite resins are aesthetic restorations that are widely used for anterior and posterior teeth. However, the effect of 0.2% chlorhexidine and 1% povidone iodine mouthwash as well as 10% carbamide peroxide bleaching were less than other types of composite resins. Therefore, the color change of nanofill and bulkfill by the application of 10% carbamide peroxide bleaching were tested after the exposure to 0.2% chlorhexidine and 1% povidone iodine mouthwash. Aim: To analyze the effect of 10% carbamide peroxide bleaching after exposure to 0.2% chlorhexidine and 1% povidone iodine mouthwash on the color change of nanofill and bulkfill. Method: Nanofill and bulkfill composite resin specimens (n=24) were divided into 4 groups, then immersed in 0.2% chlorhexidine (n=6) and 1% povidone iodine (n=6) mouthwash for 2 minutes/day in 2 weeks, later 10% carbamide peroxide bleaching was applied for 4 hours/day in 14 days. Color measurement was carried out in the beginning, after immersion in mouthwash and after bleaching using a colorimeter. Result: The color change of nanofill and bulkfill after 0.2% chlorhexidine immersion and bleaching application were significantly different (p≤0.05). However, there was no significant difference (p>0.05) in the color change of nanofill and bulkfill after 1% povidone iodine immersion and bleaching application. A significant difference (p≤0.05) was also found between the nanofill and bulkfill exposed to different mouthwashes. Meanwhile, no significant difference (p>0.05) was found between the nanofill and bulkfill exposed to the same mouthwash except 0.2% chlorhexidine. Conclusion: 1% povidone iodine produced a greater color change in the composite resins. The nanofill composite resin experienced a greater color change than the bulkfill composite resin."