Impact of coffee exposure on the color adjustment potential of universal-shade resin composites: an in vitro study

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dc.authoridSezer, Berkant / 0000-0001-9731-6156
dc.authoridMisilli, Tuğba / 0000-0003-0019-4872
dc.authoridBuldur, Mehmet / 0000-0001-9103-0069
dc.contributor.authorSezer, Berkant
dc.contributor.authorMisilli, Tuğba
dc.contributor.authorBuldur, Mehmet
dc.date.accessioned2026-02-03T12:00:11Z
dc.date.available2026-02-03T12:00:11Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractObjectives: 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.
dc.identifier.doi10.24873/j.rpemd.2025.09.1437
dc.identifier.endpage123
dc.identifier.issn1646-2890
dc.identifier.issn1647-6700
dc.identifier.issue3
dc.identifier.scopus2-s2.0-105024976132
dc.identifier.scopusqualityQ3
dc.identifier.startpage115
dc.identifier.urihttps://doi.org/10.24873/j.rpemd.2025.09.1437
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34543
dc.identifier.volume66
dc.identifier.wosWOS:001629590300004
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpemd-Soc Portuguesa Estomatologia & Medicina Dentaria
dc.relation.ispartofRevista Portuguesa De Estomatologia Medicina Dentaria E Cirurgia Maxilofacial
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectCoffee
dc.subjectColor
dc.subjectColoring agents
dc.subjectComposite dental resin
dc.subjectDental materials
dc.titleImpact of coffee exposure on the color adjustment potential of universal-shade resin composites: an in vitro study
dc.typeArticle

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