Use of two kinds of antioxidants to restore the bond strength of bleached enamel.
- Author:
Ying-Xin XU
1
;
Wen LI
1
;
Min SU
1
Author Information
- Publication Type:Journal Article
- Keywords: antioxidant; bond strength; grape seed extract; sodium ascorbate; tooth-bleaching
- MeSH: Antioxidants; Composite Resins; Dental Bonding; Dental Cements; Dental Enamel; Humans; Shear Strength; Tooth Bleaching
- From: West China Journal of Stomatology 2021;39(4):453-457
- CountryChina
- Language:English
-
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.
