Color Stability and Surface Roughness of Composites After Artificial Accelerated Aging

Authors

Raquel A. B. da Silva, Department of Pediatric Dentistry, University of São Paulo - School of Dentistry of Ribeirão Preto, Ribeirão Preto, SP, Brazil.
Talitha S. Mellara, Department of Pediatric Dentistry, University of São Paulo - School of Dentistry of Ribeirão Preto, Ribeirão Preto, SP, Brazil.
Patrícia Gatón-Hernández, School of Dentistry, University of Barcelona, Barcelona, Spain.
Fernanda C.P Pires-de-Souza, Department of Dental Materials and Prothodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Lea A.B. da Silva, Department of Pediatric Dentistry, University of São Paulo - School of Dentistry of Ribeirão Preto, Ribeirão Preto, SP, Brazil.
Carolina M. Pucinelli, Department of Pediatric Dentistry, University of São Paulo - School of Dentistry of Ribeirão Preto, Ribeirão Preto, SP, Brazil.Follow

Abstract

The color stability and surface uniformity are very important properties for dental aesthetics. Objective: To evaluate the color stability and surface roughness of different composites after artificial accelerated aging (AAA). Methods: Samples were made using the silorane-based Filtek P90 (3M-ESPE), nanohybrid Tetric N-Ceram (Ivoclar Vivadent), and GC Kalore (GC Company). Ceramic D. Sign (Ivoclar Vivadent) and Ketac N100 (3M-ESPE) resin-modified glass ionomer cement (RMGIC) served as controls. The values for color stability and surface roughness were recorded before and after AAA for non-C-UV (300 hours). Color stability was assessed as the difference between the coordinates obtained from the L*a*b* system. The surface roughness was analyzed with a rugosimeter. The surface value of each sample was taken as the average of these measurements. The one-way ANOVA and Tukey’s post-test with α=5% was used. Results: The greatest change in color stability occurred for the RMGIC (ΔE=18.7) and the least for ceramics (ΔE=2.1). No significant difference was noted among the composites (p>0.05). The surface roughness before and after AAA differed significantly only for the RMGIC (p<0.05). Conclusion: The two latest generation resins (Filtek P90 and GC Kalore) showed good results in terms of color stability and surface roughness for use in aesthetic restorations.

Recommended Citation

da Silva, R. A., Mellara, T. S., Gatón-Hernández, P., Pires-de-Souza, F. C., da Silva, L. A., & Pucinelli, C. M. Color Stability and Surface Roughness of Composites After Artificial Accelerated Aging. J Dent Indones. 2017;24(2): 26-31