Abstract
(1) Background: The aim of the paper is to determine how selected staining liquids affect color stability and reflectance of six composite and compomer dental materials. (2) Methods: Six dental materials were chosen for this study: G-aenial (GC), Filtek Z550 (3M), Herculite XRV Ultra (Kerr), Compoglass (Ivoclar Vivadent), Dyract Extra (Dentsply), and Dyract Flow (Dentsply). Ten staining liquids were used (distilled water, tea, tea with sugar, coffee, coffee with sugar, Coca-Cola®, orange and currant juices, soy sauce, and wine). Staining was carried out at 37 °C. The measurements of the color difference (ΔE) and the color parameters were carried out on a Konica Minolta CM5 spetrocolorimeter at different staining times (1, 2, 4, 8, 24, 48, 72, and 168 h). The resulting color change of the dental materials upon staining is presented as plots of ΔE, diffuse-reflection spectra, and Maxwell’s triangle. (3) Results: Significant changes in lightness (ΔL) along with changes in the total color were observed for most materials. Color change was more pronounced in compomers than in composites. (4) Conclusions: Most materials change their color from light cream to light-brown and reddish after exposure to selected staining liquids.
Highlights
Smile is one of the first interactions between humans and constitutes an important factor for any future relation
The aim of the study was to investigate the properties of six selected dental materials, chosen from the groups of composite and compomer materials, to obtain information on how selected staining liquids affect the color stability and reflectance of these materials
The color changes varied in function of the dental material and staining liquid
Summary
Smile is one of the first interactions between humans and constitutes an important factor for any future relation. Cosmetic dentistry is an essential part of dental services provided nowadays for patients of all ages. Changes in teeth structure, including their color, shape, and restorations (in particular, composite resin) are among the most popular procedures provided by dentists. All dental materials are exposed to organic pigments present in foods and drinks, which may cause their irreversible discoloration upon prolonged contact due to formation of a coated, colored layer. In order to discuss these changes, one has to take a closer look at the methodology of color assessment. The Commission Internationale de l’Eclairage (CIE) L*a*b* (Lab) system is one of the most accurate systems for color discrimination used in Europe.
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