Color stainability of indirect CAD-CAM processed composites vs. conventionally laboratory processed composites after immersion in staining solutions
| Autor: | Miguel Roig, Enrico Di Bella, Stefano Ardu, Mariana A. Arocha, Juan R. Mayoral, Juan Basilio, Jaume Llopis |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Time Factors Surface Properties Resin composite Laboratories Dental Polyurethanes Color Wine Time duration Coffee Composite Resins Polyethylene Glycols Dental Materials Random Allocation Polymethacrylic Acids Immersion Materials Testing Immersion (virtual reality) Humans Statistical analysis Bisphenol A-Glycidyl Methacrylate Composite material Coloring Agents General Dentistry Black tea Staining and Labeling Tea Temperature Water Staining Distilled water Spectrophotometry Paradigm MZ100 Computer-Aided Design Methacrylates Zirconium |
| Popis: | The aim of this study was to determine, by using a spectrophotometer device, the colour stainability of two indirect CAD/CAM processed composites in comparison with two conventionally laboratory-processed composites after being immersed 4 weeks in staining solutions such as coffee, black tea and red wine, using distilled water as control group.Two indirect CAD/CAM composites (Lava Ultimate and Paradigm MZ100) and two conventionally laboratory-processed composites (SR Adoro and Premise Indirect) of shade A2 were selected (160 disc samples). Colour stainability was measured after 4 weeks of immersion in three staining solutions (black tea, coffee, red wine) and distilled water. Specimen's colour was measured each week by means of a spectrophotometer (CIE L*a*b* system). Statistical analysis was carried out performing repeated ANOVA measurements and Tukey's HSD test to evaluate differences in ΔE00 measurements between groups; the interactions among composites, staining solutions and time duration were also evaluated.All materials showed significant discoloration (p0.01) when compared to control group. The highest ΔE00 observed was with red wine, whereas black tea showed the lowest one. Indirect laboratory-processed resin composites showed the highest colour stability compared with CAD/CAM resin blocks.CAD/CAM processed composites immersed in staining solutions showed lower colour stability when compared to conventionally laboratory-processed resin composites.The demand for CAD/CAM restorations has been increasing; however, colour stainability for such material has been insufficiently studied. Moreover, this has not been performed comparing CAD/CAM processed composites versus laboratory-processed indirect composites by immersing in staining solutions for long immersion periods. |
| Databáze: | OpenAIRE |
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