การดูดซับและความคงที่ของสีของเรซินคอมโพสิตภายหลังการแช่ในเครื่องดื่มที่มีสี / รัชชา รักศักดิ์มนุษย์ = Absorption and color stability of resin composites after immersion in colored drinks / Ratcha Raksakmanut
Objective: To evaluate drink sorption and color stability of resin composites after immersion in colored drinks. Methods: Ten disk-shaped specimens were made of each of 5 composite materials (Estelite Σ Quick, Venus, Premise, Filtek Z350 XT and Filtek P90). After the volume of specimens was calculated, specimens were immersed in coffee and red wine at 37°C. After 7 days, the initial mass of specimens was recorded. Specimens were reconditioned to constant mass in the desiccators using the desiccating cycles and drink sorption values were calculated. Another twenty disk-shaped specimens of each composite were made for color stability evaluation. After stored in artificial saliva at 37°C for 24 hours in an incubator, the initial color of each specimen was assessed by a spectrophotometer. Specimens were immersed in coffee and red wine at 37°C. After 1, 2, 3, 4, 5, 6, 12, 18, 24, 30, 36, 42, 48, 54 and 60 days, spectrophotometric measurements were again performed to determine the color changes. Data were analyzed by two-way ANOVA. Results: Drink sorption was the highest for Filtek Z350 XT (coffee = 26.66 μg/mm³, red wine = 27.20 μg/mm³) and the lowest for Filtek P90 (coffee = 8.84 μg/mm³, red wine = 8.00 μg/mm³). Red wine had more staining potential than did coffee. The most color change was observed for Filtek Z350 XT (3M ESPE) in red wine (ΔE = 29.13), while the least was found for Filtek P90 (3M ESPE) in coffee (ΔE = 1.45). Conclusions: Drink sorption and color stability of resin composites are vary among product brands with different types and amount of chemical components. Potential discoloration might be limited by proper material selection and after treatment advisement about dietary selection, based on this in vitro evaluation.
