Abstract

Aim: To evaluate the effects of two one-step polishing systems (OneGloss and PoGo) on gloss of two nanocomposite resin composites (Clearfil Majesty Esthetic and Filtek Z350 XT) before and after exposure to a staining solution. In addition, the effects of one office-bleaching agent (Ultradent Opalescence Boost PF 40%) on gloss of the resin composites after staining was evaluated.

Materials and Methods: Forty cylindrical specimens were prepared from each resin composite against Mylar strip (Mylar) and were tested for gloss (T1). The specimens were randomly assigned to four groups of 10 each. Each specimen was finished using a tungsten carbide finishing bur (Finish) and was measured for gloss (T2). Then, specimens were polished (Polish 1) with OneGloss or PoGo and was measured for gloss (T3). All specimens were stained (Stained) in coffee solution for 4 days and was measured for gloss (T4). Specimens were polished (Polish 2) with OneGloss or PoGo and then bleached (Bleach) with Ultradent Opalescence Boost PF 40% for 40 minutes and was measured for gloss, T5 and T6, respectively.

Results: There was a statistically significant differences (P < 0.05) between the two resin composites for gloss after Mylar strip. Also, after Polish 2, a statistically significant difference for gloss for both polishing systems OneGloss or PoGo on both resin composites was evident, with PoGo producing a higher gloss value. At Mylar strip and after Finish, there was no statistically significant difference in the two resin composites. Conclusion: PoGo polishing was less susceptible to staining and produced the highest gloss. Staining reduces the gloss for both resin composites. Re-polishing and bleaching do not increase gloss for either resin composite.

Clinical Significance: The use of PoGo polishing system made nanocomposite resins less susceptible to staining and produced the highest gloss. Re-polishing and bleaching do not increase gloss for either resin composites.

Keywords: Finishing/Polishing; Gloss; Nanofilled Resin Composite; In vitro; Esthetics

References

1. Zimmerli B., et al. “Composite materials: composition, properties and clinical applications. A literature review”. Schweizer Monatsschrift fur Zahnmedizin 11 (2010): 972-986.
2. Dhar V., et al. “Evidence-based Update of Pediatric Dental Restorative Procedures: Dental Materials”. Journal of Clinical Pediatric Dentistry 4 (2015): 303-310.
3. Cazzaniga G., et al. “Surface properties of resin-based composite materials and biofilm formation: A review of the current literature”. American Journal of Dentistry 6 (2015): 311-320.
4. Hervás-García A., et al. “Composite resins. A review of the materials and clinical indications”. Medicina Oral Patologia Oral y Cirugia Bucal 2 (2006): E215-E220.
5. Patel B., et al. “Effect of different polishing systems on the surface roughness of nano-hybrid composites”. Journal of Conservative Dentistry 1 (2016): 37-40.
6. Barakah HM and Taher NM. “Effect of polishing systems on stain susceptibility and surface roughness of nanocomposite resin material”. Journal of Prosthetic Dentistry 3 (2014): 625-631.
7. Campbell PM., et al. “Light scattering and gloss of an experimental quartz-filled composite”. Journal of Dental Research 6 (1986): 892-894.
8. Judd D and Wyszecki G. “Color in Business, Science, and Industry”. 3^rd, New York: John Wiley and Sons (1975): 397.
9. Ergucu Z and Turkun LS. “Surface roughness of novel resin composites polished with one-step systems”. Operative Dentistry 2 (2007): 185-192.
10. Lee I., et al. “Slumping resistance and viscoelasticity prior to setting of dental composites”. Dental Materials 12 (2008): 1586-1593.
11. Avsar A., et al. “The Effect of Finishing and Polishing Techniques on the Surface Roughness and the Color of Nanocomposite Resin Restorative Materials”. Advances in Clinical and Experimental Medicine 5 (2015): 881-890.
12. Beun S., et al. “Characterization of nanofilled compared to universal and microfilled composite”. Dental Materials 1 (2005): 51-59.
13. Mitra SB., et al. “An application of nanotechnology in advanced dental materials”. Journal of the American Dental Association 10 (2003): 1382-1390.
14. Moszner N and Klapdohr S. “Nanotechnology for dental composites”. International Journal of Nanotechnology 1-2 (2004):130-156.
15. Uctasli MB., et al. “The effect of different finishing and polishing systems on the surface roughness of different composite restorative materials”. The Journal of Contemporary Dental Practice 2 (2007): 89-96.
16. Ferracane JL. “Resin composite--State of the art”. Dental Materials 1 (2011): 29-38.
17. Endo T., et al. “Surface texture and roughness of polished nanofill and nanohybrid resin composites”. Dental Materials Journal 2 (2010): 213-223.
18. Marghalani HY. “Effect of filler particles on surface roughness of experimental composite series”. The Journal of Applied Oral Science 1 (2010): 59-67.
19. Um CM and Ruyter IE. “Staining of resin-based veneering materials with coffee and tea”. Quintessence International 5 (1991): 377-386.
20. Heintze SD., et al. “Surface roughness and gloss of dental materials as a function of force and polishing time In vitro”. Dental Materials2 (2006): 146-165.
21. Hammond H and Nimeroff I. “Measurement of Sixty-Degree Specular Gloss”. Journal of Business Research 44 (1950): 585-598.
22. Egilmez F., et al. “Estimation of the surface gloss of dental nano composites as a function of color measuring geometry”. American Journal of Dentistry 4 (2012): 220-226.
23. Gloss Introduction (2020).
24. Curved and Small Surfaces Glossmeters (2020).
25. Berns RS. “Bilmeyer and Saltzman’s Principles of Color Technology”. 3^rd , New York: John Wiley and Sons (2000): 31-74.
26. O'brien WJ., et al. “The surface roughness and gloss of composites”. Journal of Dental Research 5 (1984): 685-688.
27. Paravina RD., et al. “Effect of finishing and polishing procedures on surface roughness, gloss and color of resin-based composites”. American Journal of Dentistry 4 (2004): 262-266.
28. Yap AU., et al. “Finishing/polishing of composite and compomer restoratives: effectiveness of one-step systems”. Operative Dentistry 3 (2004): 275-279.
29. Bowles WH., et al. “Reflectance and texture changes in bleached composite resin surfaces”. International Journal of Esthetic Dentistry 5 (1996): 229-233.
30. Eliades T., et al. “In vitro degradation of polyurethane orthodontic elastomeric modules”. Journal of Oral Rehabilitation 1 (2005): 72-77.