Effect of various antioxidants on the shear bond strength of composite resin to bleached enamel: An in vitro study

The aim of this in vitro study was to evaluate and compare the effect of 10% sodium ascorbate, 6.5% proanthocyanidin, and 5% lycopene on the bond strength of composite resin to bleached enamel. Labial enamel surfaces of 100 extracted human maxillary central incisors were used in this study. Twenty t...

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Bibliographic Details
Published in:Journal of conservative dentistry 2014-01, Vol.17 (1), p.22-26
Main Authors: Arumugam, Mageshwaran Thandalam, Nesamani, Ravikumar, Kittappa, Karthikeyan, Sanjeev, Kavitha, Sekar, Mahalaxmi
Format: Article
Language:English
Subjects:
Antioxidants
Bond strength
Chemical properties
Dental adhesives
Dental glass ionomer cements
Dentistry
Enamel
Health aspects
Original
Resins
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Summary:The aim of this in vitro study was to evaluate and compare the effect of 10% sodium ascorbate, 6.5% proanthocyanidin, and 5% lycopene on the bond strength of composite resin to bleached enamel. Labial enamel surfaces of 100 extracted human maxillary central incisors were used in this study. Twenty teeth served as group I (control) and received no bleaching treatment. The remaining 80 teeth were randomly divided into four groups of 20 teeth each, based on the antioxidant used as follows: group II- bleaching with 35% carbamide peroxide gel for 30 min without the use of an antioxidant, group III- bleaching followed by use of 10% sodium ascorbate solution, group IV- bleaching followed by use of 6.5% proanthocyanidin, and group V- bleaching followed by use of 5% lycopene. These groups were further subdivided into two subgroups of 10 teeth each, based on whether composite buildup was done immediately (subgroup A) or after a delay of 2 weeks (subgroup B) post bleaching. Shear bond strength of the specimens was tested under universal testing machine. The data were tabulated and statistically analyzed. Significantly higher shear bond strength values were observed in teeth treated with control group prior to bonding, followed by sodium ascorbate group. Within the limitations of this study, it can be concluded all the antioxidants used in this study increased the bond strength of bleached enamel. Among the antioxidant groups, sodium ascorbate showed significantly higher bond strength compared to proanthocyanidin and lycopene.
ISSN:0972-0707
0974-5203
DOI:10.4103/0972-0707.124113