Effect of four different Opalescence tooth-whitening products on enamel microhardness
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Date
2008
Journal Title
Journal ISSN
Volume Title
Publisher
South African Dental Association
Abstract
OBJECTIVES: The purpose was to evaluate the effect of various Opalescence tooth-whitening products on enamel.
METHODS AND MATERIALS:
Enamel blocks were exposed to Opalescence PF 10% Carbamide Peroxide (n = 10), Opalescence PF 20% Carbamide Peroxide (n = 10), Opalescence Trèswhite Supreme 10% Hydrogen Peroxide (n = 10) and Opalescence Quick PF 45% Carbamide Peroxide (n = 10) according to the manufacturer's instructions. The control group was enamel blocks (n = 10) kept in artificial saliva. The values were obtained before exposure and after the 14-days treatment period. Enamel blocks were kept in saliva between treatments. Indent marks on enamel blocks were examined using the scanning electron microscope for treatment effects.
RESULTS:
All four different Opalescence products damaged enamel. The most damage was done when treated for a long period (112 hours). SEM images also showed damage to enamel by all 4 products. Opalescence with 10% and with 20% Carbamide Peroxide showed the highest damage, which also differed significantly (p < 0.05) from the saliva control group (p < 0.05; Tukey-Kramer Multiple comparison test).
CONCLUSION:
All 4 Opalescence products damaged enamel. Higher damage was done by the 10% carbamide peroxide and 20% carbamide peroxide products because of the much longer exposure period (112 hours in comparison to 7 hours).
Description
Keywords
Enamel, Microhardness, Tooth whitener, Opalescence
Citation
Majeed, A. et al. (2008). Effect of four different Opalescence tooth-whitening products on enamel microhardness. South African Dental Journal, 63(5): 282 - 286