Effect of different surface finishing/polishing procedures on color stability of esthetic restorative materials: A spectrophotometric evaluation

ABSTRACT

Objective: To evaluate the color stability of different esthetic restorative materials after surface finishing/polishing with different procedures. Materials and Methods: All materials were polymerized into silicone rubber rings to obtain specimens identical in size. Samples were randomly assigned into four groups (10 specimens of each composite for each group), and they were finished with different procedures: Control group (Group 1), three or two polishers interspersed with diamond grit (Groups 3 and 2, respectively), and one tungsten carbide bur + one polisher interspersed with diamond grit (Group 4). After staining process in coffee, a colorimetric evaluation according to the CIE L*a*b* system was performed by a blind trained operator at 7, 14, 21, and 28 days. Shapiro–Wilk test and Kruskal–Wallis analysis of variance were applied to assess significant differences among restorative materials. Means of the different polishing/finishing groups were compared with Scheffe’s multiple comparison test at the 0.05 level of significance. Results: In control group, significant lower discolorations were recorded for Essentia, Admira Fusion, and Estelite. After finishing, Filtek Supreme XTE and Ceram.X Universal showed a significantly lower degree of staining. The finishing technique used for Group 4 produced higher color changes. Conclusions: Tungsten carbide burs produced the higher color variations; after finishing, the nanofilled composites showed lower discoloration than nanohybrid ones, and the time of exposure to the staining agent and the polishing/finishing technique influenced the color change.

Key words:

CIE L*a*b* - color stability - esthetic restorative materials - finishing - polishing

• REFERENCES

• 1 Aytac F, Karaarslan ES, Agaccioglu M, Tastan E, Buldur M, Kuyucu E. Effects of novel finishing and polishing systems on surface roughness and morphology of nanocomposites. J Esthet Restor Dent 2016; 28: 247-61
• 2 Rai R, Gupta R. In vitro evaluation of the effect of two finishing and polishing systems on four esthetic restorative materials. J Conserv Dent 2013; 16: 564-7
• 3 Kumari RV, Nagaraj H, Siddaraju K, Poluri RK. Evaluation of the effect of surface polishing, oral beverages and food colorants on color stability and surface roughness of nanocomposite resins. J Int Oral Health 2015; 7: 63-70
• 4 Yildiz E, Sirin Karaarslan E, Simsek M, Ozsevik AS, Usumez A. Color stability and surface roughness of polished anterior restorative materials. Dent Mater J 2015; 34: 629-39
• 5 Paravina RD, Roeder L, Lu H, Vogel K, Powers JM. Effect of finishing and polishing procedures on surface roughness, gloss and color of resin-based composites. Am J Dent 2004; 17: 262-6
• 6 Koc-Vural U, Baltacioglu I, Altinci P. Color stability of bulk-fill and incremental-fill resin-based composites polished with aluminum-oxide impregnated disks. Restor Dent Endod 2017; 42: 118-24
• 7 Yap AU, Ng JJ, Yap SH, Teo CK. Surface finish of resin-modified and highly viscous glass ionomer cements produced by new one-step systems. Oper Dent 2004; 29: 87-91
• 8 Filho HN, D'Azevedo MT, Nagem HD, Marsola FP. Surface roughness of composite resins after finishing and polishing. Braz Dent J 2009; 14: 37-41
• 9 Villalta P, Lu H, Okte Z, Garcia-Godoy F, Powers JM. Effects of staining and bleaching on color change of dental composite resins. J Prosthet Dent 2006; 95: 137-42
• 10 Soares-Geraldo D, Scaramucci T, Steagall Jr W, Braga SR, Sobral MA. Interaction between staining and degradation of a composite resin in contact with colored foods. Braz Oral Res 2011; 25: 369-75
• 11 Borges A, Caneppele T, Luz M, Pucci C, Torres C. Color stability of resin used for caries infiltration after exposure to different staining solutions. Oper Dent 2014; 39: 433-40
• 12 Schulze KA, Marshall SJ, Gansky SA, Marshall GW. Color stability and hardness in dental composites after accelerated aging. Dent Mater 2003; 19: 612-9
• 13 Poggio C, Beltrami R, Scribante A, Colombo M, Chiesa M. Surface discoloration of composite resins: Effects of staining and bleaching. Dent Res J (Isfahan) 2012; 9: 567-73
• 14 Brook AH, Smith RN, Lath DJ. The clinical measurement of tooth colour and stain. Int Dent J 2007; 57: 324-30
• 15 Ertaş E, Güler AU, Yücel AC, Köprülü H, Güler E. Color stability of resin composites after immersion in different drinks. Dent Mater J 2006; 25: 371-6
• 16 Mundim FM, Garcia Lda F, Pires-de-Souza Fde C. Effect of staining solutions and repolishing on color stability of direct composites. J Appl Oral Sci 2010; 18: 249-54
• 17 Roeder LB, Powers JM. Surface roughness of resin composite prepared by single-use and multi-use diamonds. Am J Dent 2004; 17: 109-12
• 18 Ferraris F, Conti A. Superficial roughness on composite surface, composite enamel and composite dentin junctions after different finishing and polishing procedures. Part I: Roughness after treatments with tungsten carbide vs. Diamond burs. Int J Esthet Dent 2014; 9: 70-89
• 19 Kumari CM, Bhat KM, Bansal R. Evaluation of surface roughness of different restorative composites after polishing using atomic force microscopy. J Conserv Dent 2016; 19: 56-62
• 20 Gönülol N, Yilmaz F. The effects of finishing and polishing techniques on surface roughness and color stability of nanocomposites. J Dent 2012; 40 (Suppl. 02) e64-70
• 21 Ceci M, Viola M, Rattalino D, Beltrami R, Colombo M, Poggio C. et al. Discoloration of different esthetic restorative materials: A spectrophotometric evaluation. Eur J Dent 2017; 11: 149-56
• 22 Farah RI, Elwi H. Spectrophotometric evaluation of color changes of bleach-shade resin-based composites after staining and bleaching. J Contemp Dent Pract 2014; 15: 587-94
• 23 Malhotra N, Shenoy RP, Acharya S, Shenoy R, Mayya S. Effect of three indigenous food stains on resin-based, microhybrid and nanocomposites. J Esthet Restor Dent 2011; 23: 250-7
• 24 Ayad NM. Susceptibility of restorative materials to staining by common beverages: An in vitro study. Eur J Esthet Dent 2007; 2: 236-47
• 25 Avsar A, Yuzbasioglu E, Sarac D. The effect of finishing and polishing techniques on the surface roughness and the color of nanocomposite resin restorative materials. Adv Clin Exp Med 2015; 24: 881-90
• 26 Yadav RD, Raisingani D, Jindal D, Mathur R. A comparative analysis of different finishing and polishing devices on nanofilled, microfilled, and hybrid composite: A Scanning electron microscopy and profilometric study. Int J Clin Pediatr Dent 2016; 9: 201-8