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VOLUME 15 , ISSUE 5 ( September-October, 2014 ) > List of Articles

ORIGINAL RESEARCH

Spectrophotometric Evaluation of Color Changes of Bleach-shade Resin-based Composites after Staining and Bleaching

Rafat Ibrahim Farah, Hytham Elwi

Citation Information : 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 (5):587-594.

DOI: 10.5005/jp-journals-10024-1584

Published Online: 00-10-2014

Copyright Statement:  Copyright © 2014; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of this study was to evaluate the color stability of two commercially available bleach-shade resin composites (RC) after exposure to 3 storage solutions and the effect of 3 bleaching agents on the color stability and stain removal from stained RC.

Materials and methods

Two bleach-shade RC were evaluated in this study, including a nanofilled RC, FiltekTM Z350 XT (FZ), and a nanohybrid RC, Tetric® N-Ceram (TC), in the extra-white body (shade) (XWB) and L shades, respectively. Twenty-seven disk-shaped specimens, each measuring 12 mm in diameter and 2 mm in thickness, were prepared for each RC, with a total of 54 specimens. Specimens were randomly allocated into 3 groups of 9 specimens each and immersed in 3 storage solutions (distilled water, tea and coffee) for 7 days period. The 9 specimens in each staining group were further divided into 3 subgroups. Specimens in each subgroup (n = 3) were bleached using one of the bleaching agents (10 and 16% Zoom NiteWhite amorphous calcium phosphate (ACP), and Zoom 2 chairside with light activation) for 5 days period. The specimen colors were measured with spectrophotometer. The measurements were performed on each sample three times at baseline, after staining, and after bleaching. Color was expressed using the commission international de I'Eclairage (CIE) L*a*b* color space. The color differences (ÄE) between the three measurements were calculated and the results were statistically analyzed using Two-way and Three-way analysis of variance (ANOVA) and Tukey's posthoc tests. Level of significance was set at p < 0.05.

Results

Tetric® N-ceram materials demonstrated significantly less color change than the FZ and the color change, which was greater after storage in coffee compared to tea, was statistically significant. The bleaching agents significantly influence the color changes of composite specimens. All groups showed (ÄE) values below 3.3 after bleaching, except for ‘Zoom 2 chairside’ with light activation groups, which is shown clinically unacceptable lighter shade (ÄE >3.3).

Conclusion

Bleach-shade composites showed significant discoloration (ÄE > 3.3) after being immersed into coffee and tea solutions. Nanofilled composites discolored more than nanohybrid composites, and carbamide peroxide-based bleaching agents were effective in reducing the discoloration to a clinically acceptable value (ÄE > 3.3).

How to cite this article

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(5):587-594.


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  1. Response of human pulps after professionally applied vital tooth bleaching. Int Endod J 2010 Jul;43(7):572-580.
  2. Effectiveness of dentist-prescribed, home-applied tooth whitening. A meta analysis. J Contemp Dent Pract 2000 Nov 15;1(4):20-36.
  3. Impact of demographic, behavioral, and dental care utilization parameters on tooth color and personal satisfaction. Compend Contin Educ Dent Suppl 2000;(29)S35-S41.
  4. Patients’ self-perception of tooth shade in relation to professionally objective evaluation. Quintessence Int 2010 May;41(5):e80-83.
  5. Color stability of a dental composite after immersion in various media. Dent Mater J 2005 Sep;24(3):382-390.
  6. Reasons for placement and replacement of restorations of direct restorative materials by a selected group of practitioners in the United Kingdom. Quintessence Int 1997 Apr;28(4):245-248.
  7. Color stability of ten resin-based restorative materials. J Esthet Restor Dent 2012 Jun;24(3):185-199.
  8. Comparison of the color stability of ten new-generation composites: an in vitro study. Dent Maters 1994 Nov;10(6):353-362.
  9. Color stability of microfilled, microhybrid and nanocomposite resins—an in vitro study. J Dent 2010;38 Suppl 2:e137-e142.
  10. Color stability of dental composites as a function of shade. J Prosthet Dent 1998 Apr;79(4):372-377.
  11. Composite resin color stability: influence of light sources and immersion media. J App Oral Sci 2011 May-Jun;19(3):204-211.
  12. Color stability and degree of cure of direct composite restoratives after accelerated aging. Oper Dent 2007 Jul-Aug;32(4):406-411.
  13. Effects of common beverage colorants on color stability of dental composite resins: the utility of a thermocycling stain challenge model in vitro. J Dent 2012 Jul;40 Suppl 1:e48-e56.
  14. Effect of surface roughness on stain resistance of dental resin composites. J Esthet Restor Dent 2005;17(2):102-109.
  15. The ability of foods to stain two composite resins. J Prosthet Dent 1980 May;43(5):542-545.
  16. The effects of finishing and polishing techniques on surface roughness and color stability of nanocomposites. J Dent 2012 Dec;40 Suppl 2:e64-e70.
  17. Influence of staining solutions and whitening procedures on discoloration of hybrid composite resins. Acta Odontol Scand 2013 Jan;71(1):144-150.
  18. Effect of bleaching and repolishing procedures on coffee and tea stain removal from three anterior composite veneering materials. J Esthet Restor Dent 2004;16(5):290-302.
  19. The effectiveness of four methods for stain removal from direct resin-based composite restorative materials. Saudi Dent J 2013 Apr;25(2):61-67.
  20. Effects of staining and bleaching on color change of dental composite resins. J Prosthet Dent 2006 Feb;95(2):137-142.
  21. Effects of home bleaching preparations on composite resin color. J Prosthet Dent 1992 Oct;68(4):575-578.
  22. Composite resin color change after vital tooth bleaching. J Prosthet Dent 1992 Jun;67(6):778-781.
  23. The effect of current bleaching agents on the color of light-polymerized composites in vitro. J Prosthet Dent 2003 May;89(5):474-478.
  24. Staining of hybrid composites with coffee, oolong tea, or red wine. Dent Mater J 2006;25:125-131.
  25. Effects of different drinks on stainability of resin composite provisional restorative materials. J Prosthet Dent 2005 Aug;94(2):118-124.
  26. Color stability of resin composites after immersion in different drinks. Dent Mater J 2006 Jan;25(2):371-376.
  27. Color stability of sealed composite resin restorative materials after ultraviolet artificial aging and immersion in staining solutions. J Prosthet Dentist 2011;105:236-241.
  28. Color stability of highly filled composite resin materials for facings. Dent Mater 2001 Jan;17(1):87-94.
  29. Color stability of dental composites as a function of shade. J Prosthet Dent 1998 Apr;79(4):372-377.
  30. A partially aromatic urethane dimethacrylate as a new substitute for Bis-GMA in restorative composites. Dent Mater 2008 May;24(5):694-699.
  31. Water sorption of polymethacrylate networks: Bis-GMA/TEGDM copolymers. J Biomed Mater Res 1987 Mar;21(3):329-338.
  32. Staining of resin-based veneering materials with coffee and tea. Quintessence Int 1991 May;22(5):377-386.
  33. Color stability of provisional resin restorative materials. J Prosthet Dent 1998 Nov;80(5):533-539.
  34. Color stability of restorative resins. Quintessence Int 1991 Sep;22(9):733-737.
  35. Effect of bleaching on color change and refractive index of dental composite resins. Dent Mater J 2007 Jan;27(1):105-116.
  36. Effect of in-office bleaching on color and surface roughness of composite restoratives. Eur J Dent 2010 Apr;4(2):118-127.
  37. Nightguard vital bleaching. Quintessence Int 1989 Mar;20(3):173-176.
  38. J Dent 2010 Feb;38(2):113-117.
  39. The efficiency of 10% carbamide peroxide gel on dental enamel. Dent Mater J 2004 Dec;23(4):522-527.
  40. The effect of different bleaching agents on the surface texture of restorative materials. Oper Dent 2006 Jul-Aug;31(4):473-480.
  41. Effect of three bleaching agents on the surface properties of three different esthetic restorative materials. J Prosthet Dent 2003 May;89(5):466-473.
  42. Carbamide peroxide bleaching agents: effects on surface roughness of enamel, composite and porcelain. Clin Oral Investig 2006 Mar;10(1):23-28.
  43. The effect of home bleaching agents on the surface roughness of tooth-colored restoratives with time. Oper Dent 2004 Jul-Aug;29(4):398-403.
  44. Effect of bleaching gels on surface roughness of nanofilled composite resins. Eur J Dent 2011 Apr;5(2):173-179.
  45. Comparison of surface roughness of oral hard materials to the threshold surface roughness for bacterial plaque retention: a review of the literature. Dent Mater 1997 Jul;13(4):258-269.
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