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:: Volume 27, Issue 1 (1-2015) ::
J Iran Dent Assoc 2015, 27(1): 43-52 Back to browse issues page
Comparative Effect of Casein Phosphopeptide Amorphous Calcium Phosphate and Resin Infiltrant on Brown Spot Color Parameters after Using 20% Carbamide Peroxide
Farzaneh Shirani1 , Hale Khalili2 , Marjan Mehravaran * 3
1- Associate Professor, Dental Material Research Center, Department of Restorative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran
2- Assistant Pprofessor, Department of Color Science and Technology, School of Textile, Isfahan University of Technology. Isfahan, Iran
3- Dental Students, Students Research Committee, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran , Marjan_mehr68@yahoo.com
Abstract:   (4889 Views)

Background and Aim: Tooth-colored restorations are the current strategy for treatment of aesthetically unpleasant brown spots (BSs). Considering the importance of conserva-tive dentistry, this study aimed to assess the effect of resin infiltrant (RI) and casein phosphopeptide amorphous calcium phosphate (CPP-ACP) after the application of 20% carbamide peroxide (CP) on BS color parameters in the esthetic zone.

Materials and Methods: This experimental study was conducted on 70 extracted sound human teeth with BSs. The specimens were first subjected to the application of 20% CP and were then randomly divided into two groups of CPP-ACP and RI. Specimens were subjected to colorimetry before the intervention, after bleaching and after the application of RI or CPP-ACP using a spectrophotometer. Data were statistically analyzed using SPSS version 20, paired t-test, independent t-test and repeated measures ANOVA with P<0.05 level of significance.

Results: CP (20%) significantly increased the L* and b* and decreased the a* parameter (p<0.001). CPP-ACP caused no change in a* and b* parameters of BS (p>0.05) howev-er, the L* significantly increased (p<0.001). RI significantly decreased the a* parameter (p<0.001) but the reduction in L* and increase in b* were not significant (p>0.05). Com-parison of the two groups revealed that only the color change (ΔE) during the bleaching procedure was significant (p<0.001). ΔE of BS and the adjacent enamel did not change significantly in any step of the procedure in the two groups (p>0.05).

Conclusion: Based on the results, aesthetically unpleasant BSs on teeth may be treated using a bleaching agent along with RI or CPP-ACP. RI seems to have a superior efficacy in increasing the translucency compared to CPP-ACP.
Keywords: Spectrophotometry, Tooth discoloration, Esthetics, Dental, Carbamide peroxide, Casein phosphopeptide amorphous calcium phosphate
Full-Text [PDF 227 kb]   (1399 Downloads)    
Type of Study: Original | Subject: Restorative Dentistry
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Shirani F, Khalili H, Mehravaran M. Comparative Effect of Casein Phosphopeptide Amorphous Calcium Phosphate and Resin Infiltrant on Brown Spot Color Parameters after Using 20% Carbamide Peroxide. J Iran Dent Assoc 2015; 27 (1) :43-52
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Volume 27, Issue 1 (1-2015) Back to browse issues page
Journal of Iranian Dental Association

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