Changes in color and contrast ratio of resin composites after curing and storage in water
| Autor: | Fernando Neves Nogueira, Vitor de Oliveira Baldo, Igor Studart Medeiros, Marlus da Silva Pedrosa |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Dental materials Resin composite CIELAB Conservative dentistry Tooth surface RK1-715 Reflectivity Clinical Practice medicine.anatomical_structure Color changes Dentistry Resin composites Dentin medicine Medicine Original Article Contrast ratio Composite material General Dentistry Curing (chemistry) |
| Zdroj: | The Saudi Dental Journal Saudi Dental Journal, Vol 33, Iss 8, Pp 1160-1165 (2021) |
| ISSN: | 1013-9052 |
| Popis: | Purpose: To verify the color change and contrast ratio of resin composites after curing and after 30 days of storage in water. Methods: Dentin A2 shades of different light-cured dental resin composites (Vittra APS, FGM, Brazil; Z350 XT, 3M ESPE, EUA; Tetric N-Ceram, Ivoclar Vivadent, Liechtenstein, and Charisma Diamond, Heraeus Kulzer, Germany) were tested. Ten rounded specimens (8 mm × 2 mm) were prepared for each material. Reflectance for all samples was obtained using a spectrophotometer (Minolta CM 3700d, Konica Minolta, Japan) before curing, immediately after curing, and after 30 days of storage in water. The color change (ΔE*lab) and contrast ratio (CR) data were analyzed using a one-way analysis of variance with Tukey's and paired t-tests (α = 1%). Results: For all materials tested, significant color changes were noticeable after curing and after 30 days in water (p 0.01). Conclusion: The CR values and color changes after curing and 30 days of storage in water varied depending on the material tested. This study corroborates the clinical practice of curing a small amount of unpolymerized resin composite on the tooth surface to select the desired shade before undertaking esthetic restorative procedures. |
| Databáze: | OpenAIRE |
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