Tujuan: Penelitian ini bertujuan untuk mengetahui pengaruh penyikatan dengan dantanpa pasta gigi charcoal terhadap kekerasan permukaan material restorasi semenionomer kaca modifikasi resin. Metode penelitian: Dalam penelitian ini digunakansemen ionomer kaca modifikasi resin Fuji II LC. Sejumlah 24 spesimen berbentuksilinder dengan ukuran diameter 6 mm dan tebal 2 mm yang dipolimerisasi denganmenggunakan LED light cured LEDMAX-Hilux selama 20 detik dengan irradiansi 800mW/cm2. Setelah polimerisasi, spesimen direndam dalam akuades pada suhu 37Cselama 24 jam. Spesimen diukur kekerasan permukaan awal dengan dengan KnoopMicrohardness tester Shimatzu HMV-G21 DT yang diindentasikan dengan beban 50 gfselama 15 detik. Selanjutnya, specimen dibagi menjadi tiga kelompok (n=8) denganperlakuan penyikatan dengan akuades, pasta gigi tanpa charcoal Colgate TotalProfessional Clean®, dan pasta gigi dengan charcoal Colgate Total Charcoal DeepClean® selama 4 menit 40 detik setara satu bulan penyikatan dengan beban 150 grammenggunakan Oral-B DB4010 Advance Power Battery Toothbrush. Spesimen kemudiandibersihkan dengan ultrasonic cleaner selama 20 detik dan diuji kekerasan permukaanakhir. Data dianalisis menggunakan uji One Way Anova untuk menilai perbedaankekerasan permukaan antara kelompok penyikatan. Hasil: Semen ionomer kacamodifikasi resin yang diberikan penyikatan dengan akuades, pasta gigi tanpa charcoal,dan pasta gigi charcoal menunjukkan peningkatan kekerasan permukaan yang signifikanantar kelompok (p<0,5). Peningkatan kekerasan permukaan paling tinggi terjadi padapenyikatan dengan pasta gigi charcoal. Kesimpulan: Semen ionomer kaca modifikasiresin setelah penyikatan menggunakan pasta gigi yang mengandung charcoal memilikikekerasan permukaan yang lebih tinggi dibandingkan pasta gigi yang tidak mengandungcharcoal

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Objective: The aim of this study was to determine the effect of brushing with and without

charcoal toothpaste to surface hardness changes of resin modified glass ionomer cement.

Method: Resin modified glass ionomer cement Fuji II LC was used in this study. 24

specimens of 6 mm in diameter and 2 mm in thinkness with disk-shaped were prepared

and polymerized using LED light cured LEDMAX-Hilux in 20 seconds with irradiance

800 mW/cm2. After polymerization, specimens were immersed in 37C aquadest solution

for 24 hours. Specimens were measured initial surface hardness using Knoop

Microhardness tester Shimatzu HMV-G21 with 50 gf indentation in 15 seconds.

Futhermore, specimens were divided into three groups (n=8); brushed using distilled

water (group A), toothpaste without charcoal Colgate Total Professional Clean® (group

B), and toothpaste with charcoal Colgate Total Charcoal Deep Clean® (group C) for four

minutes and 40 seconds (equivalent to a month brushing) using Oral-B DB4010 Advance

Power Battery Toothbrush with a load of 150 gr. Specimens were cleaned with ultrasonic

cleaner in 20 seconds and were measured for final surface hardness. Data were anylized

using One Way Anova to assess the significant differences between brushed groups.

Result: The value of surface hardness of resin modified glass ionomer cement specimens

were increased significantly between groups (p<0,05). The enhancement of surface

hardness value of charcoal toothpaste was highest between brushed groups. Conclusion:

It was concluded that resin modified glass ionomer cement specimens after brushed with

charcoal toothpaste have a higher surface hardness than toothpaste without charcoal