Home Print this page Email this page   Users Online: 146

 

Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2013  |  Volume : 1  |  Issue : 1  |  Page : 11-16

Effects of different concentrations of hydrogen peroxide on the color stability of various esthetic restorative materials in vitro


1 Department of Prosthodontics, Faculty of Dentistry, Istanbul Medipol University, Istanbul, Turkey
2 Department of Prosthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey
3 Department of Prosthodontics, Faculty of Dentistry, Konya Necmettin Erbakan University Faculty of Dentistry, Konya, Turkey

Correspondence Address:
Haluk Baris Kara
Istanbul Medipol University, Ataturkbulv. No. 27 unkapani, 34083 Fatih, Istanbul
Turkey
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2347-4610.116587

Rights and Permissions

Purpose: The aim of this in vitro study was to determine the color changes of four different restorative materials after exposing these materials to two different bleaching agents. Materials and Methods: In this study, bleaching agents were applied to a low-fusing porcelain (VITA VM9), heat-pressed glass ceramics (IPS Empress Esthetic), and two types of composites (Clearfil Majesty Esthetic and Clearfil Photo Posterior). Twenty disc-shaped specimens were fabricated (with a diameter of 10 mm and a thickness of 2 mm) from each material (n0 = 10). The initial color changes were measured using a spectrophotometer. The first set of specimens were bleached with 10% hydrogen peroxide (HP) for 1 h daily for 10 days. Another set of specimens were bleached with 40% HP bleaching gel for two consecutive applications for 20 min each. The data were analyzed statistically by using two-way analysis of variance (ANOVA) and post hoc Tamhane's T2 tests ( P < 0.05). Results: The mean color change value (ΔE) for Clearfil Majesty Esthetic was significantly higher than the value for VITA VM9 groups, treated with the 10% HP. In addition, the values for Clearfil Photo Posterior were significantly higher than the values for Clearfil Majesty Esthetic, IPS Empress Esthetic, and VITA VM9 groups treated with the 40% HP (P < 0.05). The comparative evaluation of bleaching agents on the color change of materials revealed that the differences between the bleaching agents were significant for the Clearfil Photo Posterior groups (P < 0.05). Conclusion: The effects of bleaching agents should be known and applied consciously when restorative materials (especially polymer-containing restorative materials) are present.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed1990    
    Printed131    
    Emailed0    
    PDF Downloaded293    
    Comments [Add]    
    Cited by others 1    

Recommend this journal