Pengaruh Minuman Kopi Hitam Robusta (Coffea canephora) Jollong Terhadap Pewarnaan Resin Komposit Nanofiller
DOI:
https://doi.org/10.35790/84t8x308Keywords:
resin komposit nanofiller; kopi robusta; perubahan warna; ΔE; diskolorasiAbstract
Abstract: Dental caries remains a predominant issue in Indonesia. Nanofiller composite resin is widely used as an aesthetic restorative material, yet it is susceptible to discoloration when exposed to pigmented beverages such as black robusta coffee. This study aimed to determine the effect of immersing nanofiller composite resin in Jollong robusta black coffee solution (Coffea canephora) on color change. A post-test only control group design was applied using 30 Filtek Z350XT specimens divided into five concentration groups (0%, 25%, 50%, 75%, 100%) over nine days. Color change was measured using a spectrophotometer and expressed as ΔE values based on the CIELAB system. The results demonstrated a progressive increase in ΔE values corresponding to higher concentrations and longer immersion periods, reaching a peak value of 1.643 at 100% concentration on day 9. One-way ANOVA and LSD post hoc tests confirmed significant differences among groups (p<0.05). The tannin, polyphenol, and chlorogenic acid content of robusta coffee synergistically interacted with its acidic properties to degrade the resin matrix, thereby, intensifying pigment penetration. In conclusion, Jollong robusta black coffee significantly affects the color stability of nanofiller composite resin.
Keywords: nanofiller composite resin; robusta coffee; color change; ΔE; discoloration
Abstrak: Karies masih merupakan masalah kesehatan gigi dan mulut di Indonesia. Resin komposit nanofiller banyak digunakan sebagai bahan restorasi estetik, namun rentan mengalami perubahan warna akibat paparan minuman berpigmen antara lain kopi hitam robusta. Penelitian ini bertujuan untuk mengetahui pengaruh perendaman resin komposit nanofiller dalam larutan kopi hitam robusta Jollong (Coffea canephora) terhadap perubahan warna. Penelitian menggunakan post-test only control group design dengan 30 spesimen Filtek Z350XT yang dibagi menjadi lima kelompok konsentrasi (0%, 25%, 50%, 75%, 100%) selama sembilan hari. Perubahan warna diukur menggunakan spektrofotometer dan dinyatakan dalam nilai ΔE berdasarkan sistem CIELAB. Hasil penelitian memperlihatkan peningkatan nilai ΔE yang progresif seiring bertambahnya konsentrasi dan durasi perendaman, dengan nilai tertinggi 1,643 pada konsentrasi 100% hari ke-9. Uji one-way ANOVA dan post hoc LSD mengonfirmasi perbedaan bermakna antar kelompok (p<0,05). Kandungan tanin, polifenol, dan asam klorogenat dalam robusta bersinergi dengan sifat asam kopi dalam mendegradasi matriks resin sehingga memperparah penetrasi pigmen. Simpulan penelitian ini ialah kopi hitam robusta Jollong berpengaruh bermakna terhadap perubahan warna resin komposit nanofiller.
Kata kunci: resin komposit nanofiller; kopi robusta; perubahan warna; ΔE; diskolorasi
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