Use of two kinds of antioxidants to restore the bond strength of bleached enamel / 华西口腔医学杂志
West China Journal of Stomatology
; (6): 453-457, 2021.
Article
in En
| WPRIM
| ID: wpr-887758
Responsible library:
WPRO
ABSTRACT
OBJECTIVES@#This work aimed to evaluate the ability of two kinds of antioxidants, namely, grape-seed extract and sodium ascorbate, in restoring bond strength at the resin-enamel interface after bleaching.@*METHODS@#Ten groups of samples with 15 teeth per group were prepared for shear-bond-strength test at the resin-enamel interface after bleaching. The groups were as follows: control; no antioxidant; 2.5%, 5%, 10%, or 15% grape-seed extract; and 2.5%, 5%, 10%, or 15% sodium ascorbate. The peak values of shear bond strength when resin was debonded from teeth and the failure modes under a microscope were recorded. Ten other groups of teeth with two teeth per group were prepared and treated in a similar approach before resin bonding. The samples were cut vertically to the bonding interface. The structures of the bonding interface were compared by scanning electron microscopy.@*RESULTS@#No statistically significant difference in shear bond strength was found among the no-antioxidant, 2.5% grape-seed extract, and 2.5%, 5%, or 10% sodium ascorbate groups (@*CONCLUSIONS@#Immediately after bleaching, the bond strength of dental enamel significantly decreased. Bond strength can be restored by 5% grape-seed extract or 15% sodium ascorbate in 5 min.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Tooth Bleaching
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Dental Bonding
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Composite Resins
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Dental Cements
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Dental Enamel
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Shear Strength
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Antioxidants
Limits:
Humans
Language:
En
Journal:
West China Journal of Stomatology
Year:
2021
Type:
Article