Food dye staining of dental composites: material variability and mouthwash-induced staining reversibility
Biomaterial Investigations in Dentistry, cilt.13, ss.313-322, 2026 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 13
- Basım Tarihi: 2026
- Doi Numarası: 10.2340/biid.v13.45823
- Dergi Adı: Biomaterial Investigations in Dentistry
- Derginin Tarandığı İndeksler: Scopus, MEDLINE, Directory of Open Access Journals
- Sayfa Sayıları: ss.313-322
- Anahtar Kelimeler: colour stability, food colouring agents, mouthwashes, resin based composites, spectrophotometry
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Akdeniz Üniversitesi Adresli: Evet
Özet
Objective: Food dyes, widely used in consumables, may interact with polymeric materials, yet their staining effects on resin based dental composites remain underexplored. This in vitro study investigates the staining potential of five common water-soluble food dyes on contemporary dental composites and evaluates the efficacy of Listerine Advanced White mouthwash in reversing discolouration, using both colour difference and whiteness-based analyses. Methods: Five synthetic dyes - Tartrazine, Sunset Yellow, Ponceau 4R, Carmoisine, and Brilliant Blue - were tested on six resin composites: Charisma Smart, Estelite Z Quick, Filtek One Bulkfill, RubyFlow, Spectra SphereTEC High Viscosity (STHV), and Filtek Ultimate. Sixty disk-shaped samples (7 mm x 2 mm) per composite (N = 360) were immersed in dye solutions (50 mg/L) or distilled water (control) for 7 days. Colour changes were evaluated using the CIEDE2000 colour difference formula (AE00) and the dental whiteness index (WID), calculated from Commission Internationale de l'Eclairage L*a*b* color space (CIELAB) coordinates obtained with a spectrophotometer. Results: Brilliant Blue exhibited the highest staining potential, producing ∆E00 values exceeding the clinically unacceptable threshold (1.8) in all composites except Spectra STHV, and was also associated with the greatest changes in WID values. Other dyes caused variable and generally less pronounced changes in both ∆E00 and WID. The whitening mouthwash partially reversed discolouration, reflected by significant increases in WID and reductions in ∆E00, with significant recovery observed in Estelite, RubyFlow, and Filtek One (p < 0.05). Analysis of variance revealed significant effects of dye type, composite material, and treatment on both AE00 and WID outcomes (p < 0.001). Conclusion: The colour stability and whiteness of dental resin composites are affected by synthetic food dyes in a material- and dye-dependent manner. Whitening mouthwash can partially restore both colour difference and whiteness; however, complete recovery to baseline values is generally not achieved.