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"Tujuan: Penelitian ini bertujuan untuk mengetahui perubahan warna dari resin komposit mikrohibrida setelah perendaman dalam minuman cokelat Indonesia. Metode Penelitian: Dalam penelitian ini digunakan resin komposit mikrohibrida G-aenial Anterior™. Spesimen berbentuk silinder dengan ukuran diameter 6 mm dan tebal 2 mm. Selembar mylar strip diletakkan diatas permukaan resin komposit sebelum dilakukan proses curing. Polimerisasi dilakukan menggunakan Light Curing Unit (Ledmax Hilux Model 450) selama 20 detik dengan irradiansi 700 mw/cm2. Setelah polimerisasi, spesimen direndam dalam akuades pada suhu 37oC selama 24 jam. Spesimen dibagi menjadi tujuh kelompok (n = 6) yaitu; perendaman pada larutan kakao asal Aceh, Lampung, Jawa Timur, Bali, Flores, Kendari dan Akuades. Spesimen direndam dalam larutan cokelat dengan durasi 24 jam selama 7 hari dengan penggantian larutan setiap harinya. Warna spesimen diukur menggunakan Colorimeter NH310 (Shenzhen 3NH) menurut sistem warna CIE L*a*b* setelah perendaman pada akuades selama 24 jam dan setelah direndam dalam larutan cokelat Indonesia selama 7 hari. Indeks perubahan warna (ΔE*) antara setiap kelompok dihitung. Data dianalisis menggunakan uji One-Way Anova untuk menilai perbedaan warna antar kelompok perendaman. pH larutan cokelat diukur menggunakan pH meter (Thermo Scientific Orion Star A211 Benchtop). Hasil: Resin komposit G-aenial Anterior™ yang telah direndam di dalam enam larutan cokelat selama 7 hari menunjukkan perubahan warna yang signifikan antar kelompok (p<0,05). Larutan cokelat menyebabkan perubahan warna yang signifikan hanya pada satu kelompok yaitu kelompok G-aenial Anterior™ yang direndam dalam larutan cokelat Lampung. Perubahan warna yang paling rendah didapatkan pada kelompok resin komposit yang direndam dalam larutan cokelat Bali. Kesimpulan: Disimpulkan bahwa seluruh larutan cokelat tidak menyebabkan perubahan warna secara signifikan, kecuali pada larutan cokelat asal Lampung.......Objectives: The aim of this study was to analyse the color change of resin composite microhybrid after immersion in Indonesian Chocolate Drink. Material and Methods: G-aenial Anterior™ resin composite was used in this study. All materials were prepared and polymerized into disk-shaped specimens of 6 mm in diameter and 2 mm in thickness. A piece of mylar strip was placed on top of the specimens just before the polymerization. Polymerization was done using Light Curing Unit (Ledmax Hilux Model 450 for 20 seconds with irradiance of 700 mw/cm2. Specimens were immersed in 37oC aquadest solution for 24 hours after polymerization was done. Specimens were divided into seven groups (n=6); immersion in chocolate drink from Aceh, Lampung, Jawa Timur, Bali, Flores, Kendari, and Aquadest. Specimens were immersed in chocolate drink for 7 days (with the duration being 24 hours daily). The chocolate drink solutions were changed daily. Color of the specimens were measured using Colorimeter NH310 (Shenzhen 3NH) according to the CIE L*a*b* color system after immersion in aquadest solution for 24 hours and after immersion in Indonesian chocolate drink for 7 days. Color change (ΔE*) of every groups was calculated. Data were analysed using One-Way Anova to assess the significant differences among immersion groups. pH levels of all chocolate drink was measured using a pH meter. (Thermo Scientific Orion Star A211 Benchtop). Results: G-aenial Anterior™ resin composite showed significant color differences among each groups after immersion in chocolate drink for 7 days (p<0,05). G-aenial Anterior™ resin composite that has been immersed in Lampung chocolate drink was the only group with significant color change. The least amount of color change was found in G-aenial Anterior™ resin composite immersed in Bali chocolate drink. Conclusions: It was concluded that none of the chocolate drink from Indonesia caused significant color change, except for Lampung chocolate drink."

"Tujuan: Untuk mengetahui pengaruh perendaman resin komposit mikrohibrida Filtek Z250™ di dalam larutan cokelat Indonesia asal Aceh, Lampung, Jawa Timur, Bali, Flores, dan Kendari terhadap perubahan warna. Metode dan Material: Digunakan 42 spesimen resin komposit mikrohibrida Filtek Z250TM berdiameter 6 mm dan tebal 2 mm serta minuman cokelat Indonesia asal Aceh, Lampung, Jawa Timur, Bali, Flores, dan Kendari. Spesimen dipolimerisasi menggunakan LED Curing Unit iradiansi 700 mW/cm2 (LED Max Hilux) selama 20 detik kemudian direndam di dalam larutan cokelat selama 7 hari yang diganti setiap harinya. Perubahan warna diukur menggunakan colorimeter NH310 (Shenzhen 3NH) dengan sistem CIE L*a*b kemudian dianalisis menggunakan uji statistik One-Way Anova. pH larutan media perendaman diukur menggunakan pH meter (Thermo Scientific Orion Star A211 Benchtop). Hasil: Terdapat perubahan warna sebelum dan sesudah direndam dalam larutan cokelat yang signifikan (p<0,05) pada nilai ΔE*, ΔL*, Δa* dan Δb* nya. Larutan cokelat asal Lampung dengan pH yang paling rendah menyebabkan perubahan warna paling besar pada resin komposit Filtek Z250TM sedangkan larutan cokelat Kendari dengan pH yang paling tinggi menyebabkan perubahan warna yang paling kecil. Seluruh spesimen resin komposit Filtek Z250TM berubah menjadi lebih gelap. Kesimpulan: pH larutan coklat Indonesia mempengaruhi besarnya perubahan warna pada resin komposit mikrohibrida Filtek Z250TM.......Objective: To analyze the influence of Indonesian (Aceh, Lampung, East Java, Bali, Flores, and Kendari) chocolate drink immersion on color change of microhybrid composite resin. Materials and Method: 42 specimens with 6 mm diameter and 2 mm thick, chocolate drink from Aceh, Lampung, East Java, Bali, Flores, and Kendari were prepared. The specimens were polymerized for 20 seconds using a 700 mW/cm2 irradiance LED curing unit (LED Max Hilux). Specimens were immersed in Indonesia chocolate drink for 7 days and the chocolate were changed everyday. The color changes of specimens were measured using colorimeter NH310 (Shenzhen 3NH) following CIE L*a*b system then being analyzed using statistic One-Way Anova Test. pH solutions was measured by pH meter (Thermo Scientific Orion Star A211 Benchtop). Results: There were significant color change ΔE*, ΔL*, Δa* and Δb* (p<0,05) before and after immersed in Indonesia chocolate. Lampung chocolate drink which has the lowest pH makes the most significant color changes on Filtek Z250TM, meanwhile Kendari chocolate drink which has the highest pH most likely has no effect on color changes. All composite resin colors are darker after being immersed in all solutions. Conclusions: Color changes on microhybrid composite resin Filtek Z250TM are influenced by pH."