Abstract
Purpose:
This study analyzed the influence of 10% sodium ascorbate (SA) on tag formation in bleached enamel.
Materials and methods:
Five groups were tested: G1 - control; G2 - bleaching with 10% carbamide peroxide (CP) + restoration; G3 - CP + SA + restoration; G4 - bleaching with 35% hydrogen peroxide (HP) + restoration; and G5 - HP + SA + restoration. The teeth were sectioned and decalcified, and the resin tags were analyzed at 400X magnification using an optical light microscope and Axiovision software.
Results:
The resin tag lengths in µm for each group were as follows: G1 - 36.1A; G2 - 5.8C; G3 - 14.4B; G4 - 1.7D; G5 - 6.5C. Different letters indicate statistically significant differences.
Conclusion:
Tooth bleaching with CP or HP impairs the formation of resin tags, and the utilization of sodium ascorbate increases tags length.
Publication types
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Comparative Study
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Randomized Controlled Trial
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Research Support, Non-U.S. Gov't
MeSH terms
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Acid Etching, Dental / methods
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Antioxidants / chemistry*
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Ascorbic Acid / chemistry*
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Carbamide Peroxide
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Composite Resins / chemistry
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Dental Bonding*
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Dental Enamel / ultrastructure*
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Dental Materials / chemistry
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Humans
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Hydrogen Peroxide / chemistry
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Image Processing, Computer-Assisted
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Materials Testing
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Peroxides / chemistry
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Phosphoric Acids / chemistry
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Photochemotherapy / methods
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Polymerization
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Resin Cements / chemistry*
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Saliva, Artificial / chemistry
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Temperature
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Time Factors
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Tooth Bleaching / methods
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Tooth Bleaching Agents / chemistry*
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Urea / analogs & derivatives
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Urea / chemistry
Substances
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Antioxidants
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Composite Resins
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Dental Materials
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Filtek Z250
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Peroxides
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Phosphoric Acids
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Resin Cements
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Saliva, Artificial
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Scotchbond Multi-Purpose
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Tooth Bleaching Agents
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Carbamide Peroxide
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Urea
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Hydrogen Peroxide
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phosphoric acid
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Ascorbic Acid