The Evaluation of the Colour Changes of Traditional Composites, Ceramic Blocks and CAD/CAM Composites in Different Solutions
Aims: The aim of this study is to investigate the color changes of three different traditional composites, one ceramic and two resin‑based composites CAD/CAM blocks in different solutions.
Methods: The materials used in the study were CAD/ CAM block containing lithium disilicate glass ceramic (Ivoclar), Vita Enamic containing resin (VITA), Lava Ultimate Block containing resin (3M ESPE), G‑aenial anterior composite (GC,), Filtek™ Ultimate Universal composite (3M ESPE) and Clearfil Majesty Esthetic composite (Kuaray). As colouring solutions, red wine (Buzbağ), black tea (Lipton), coffee (Nescafe) and distilled water (EAU
distillee) were used. For the preparation of the traditional composite samples to be used in the study, 7 × 7 mm square‑shaped plexiglass moulds, 1.2 mm in thickness, were used. The CAD/CAM blocks with ceramic and resin content were cut at the same thickness using a Struers sensitive cutting device. The samples were then randomly separated into grups of 10 and of the 240 samples, groups were separated into 6 different materials and 4 different solutions. The colour measurements of the 240 samples were taken at baseline, 30 days and 120 days with a Lovibond spectrophotometer (Tintometer).
Results: A statistically significant difference was determined between the materials in respect of the ΔE values in the 30‑day solution groups (P < 0.05). No statistically significant difference was determined in the ΔE values of the different materials in the 30‑day and 120‑day distilled water groups (P > 0.05). A statistically significant difference was determined between the materials in respect of the ΔE values in the 120‑day solution groups (P < 0.05).
Conclusion: In respect of discolouration, ceramic blocks are more successful. Resin‑based blocks and traditional aesthetic composites showed more discolouration. The dietary habits of the patient should be taken into consideration in the selection of the restorative material.
Keywords: CAD/CAM blocks, coloration, composite resins