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:: Volume 25, Issue 3 (7-2013) ::
J Iran Dent Assoc 2013, 25(3): 139-146 Back to browse issues page
Effect of Staining Solutions and Repolishing on Composite Resin Color Change
Elham Zajkani * 1, Maryam Abdoh Tabrizi2 , Amir Ghasemi3 , Hasan Torabzade4 , Mohammad Kharazifard5
1- Assistant Professor, Operative Dentistry, School of Dentistry, Zanjan University of Medical Science. Zanjan, Iran , elham.zajkanident@gmail.com
2- Assistant Professor, Operative Dentistry, School of Dentistry, Shahid Behesht University of Medical Science. Shahid Behesht, Iran
3- Associate Professor, Operative Dentistry, School of Dentistry, Shahid Behesht University of Medical Science. Shahid Behesht, Iran
4- Member of Dental Research Center and Associate Professor, Operative Dentistry, School of Dentistry, Shahid Behesht University of Medical Science. Shahid Behesht, Iran
5- Research Member of Dental Research Center Tehran University of Medical Sciences. Tehran, Iran
Abstract:   (8848 Views)
    Background and Aim : Success of composite restorations mainly depends on their color stability when in service. The present study aimed at assessing the effect of staining solutions and repolishing on composite resin color change .

  Materials and Methods : In this experimental study, 200 specimens were fabricated with A2 and B2 shades of Spectrum (TPH, Dentsply) and Point 4 (Kerr, USA) composite resins (100 specimens each). Specimens were divided into 5 groups of 10 samples each and immersed in coffee, tea, coke, orange juice and distilled water for 30 days. Specimens were photographed with a digital camera (Fine Pix S9600). Color analysis was done with CS Photoshop software (CIE lab color space) at baseline, after color change and after repolishing. Obtained results were analyzed using Three-way ANOVA and LSD test. Level of significance was set at P<0.05 .

  Results: All specimens showed a significant color change in all solutions except for water ( D E>3.3). The greatest color change occurred in B2 Spectrum composite resin in coffee while the smallest color change was observed in A2 Point 4 specimens in water. Except for water and coke, the difference in color change between the two composite resins in all solutions was statistically significant. Color changes of B2 shade were significantly higher than those of A2. Significant improvementswere observed in color of specimens after their repolishing. However, color change of specimens in coffee and tea did not improve to the clinically acceptable level by repolishing . 

  Conclusion : Color change of composite restorations depends on the type and shade of composite resin as well as patient’s nutritional habits .

 
Keywords: Imaging, composite resin, color change, polishing
Full-Text [PDF 207 kb]   (2992 Downloads)    
Type of Study: Original | Subject: Restorative Dentistry
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Zajkani E, Abdoh Tabrizi M, Ghasemi A, Torabzade H, Kharazifard M. Effect of Staining Solutions and Repolishing on Composite Resin Color Change. J Iran Dent Assoc 2013; 25 (3) :139-146
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Volume 25, Issue 3 (7-2013) Back to browse issues page
Journal of Iranian Dental Association

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