Akademik Veri Yönetim Sistemi
REVISTA PORTUGUESA DE ESTOMATOLOGIA MEDICINA DENTARIA E CIRURGIA MAXILOFACIAL, cilt.66, sa.3, ss.115-123, 2025 (ESCI, Scopus)
Objectives: This study aimed to evaluate the color adjustment potential (CAP) of a universal- shade composite resin applied to acrylic teeth of different shades under various storage conditions and over different time intervals. Methods: A universal-shade composite (Omnichroma; Tokuyama, Tokyo, Japan) and acrylic molar teeth in three shades (A1, A2, D4) were used. Two types of samples were prepared: dual-shade (Class I restorations with 5-mm diameter and 2-mm depth in acrylic teeth) and single-shade (artificial tooth replicas). Specimens were stored in either distilled water or coffee. Color measurements were performed using a spectrophotometer at baseline, 1 day, 1 week, and 1 month. Color differences (Delta E-00) were calculated using the CIEDE2000 formula. Delta E-00 values were analyzed with two-way ANOVA and Tukey's tests. CAP(00) values were analyzed using the three-way ANOVA for intergroup comparisons and repeated measures ANOVA with Bonferroni tests to assess time-related effects. Results: At baseline, the Delta E-00 values were lowest in the A1 group for both sample types, followed by A2 and D4. After 1 month, coffee immersion led to significantly higher Delta E-00 values than distilled water in all groups. CAP(00) values significantly decreased between 1 week and 1 month in coffee-stored samples. All shade and storage subgroups showed a significant time-dependent increase in CAP(00) (p < 0.05). Conclusions: One-month storage in distilled water enhanced CAP in all groups. In turn, prolonged coffee exposure increased color differences and diminished the color harmony of restorations over time. (Rev Port Estomatol Med Dent Li & gcy; & mcy;& acy;& khcy; & tcy;& acy;& scy;. 2025;66(3):115-123)
(c) 2025 Sociedade Portuguesa de Estomatologia e Medicina Dent & aacute;ria.Published by SPEMD. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).