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Effect Of Butanol Extract Pomegranate Peel (Punica Granatum) Gel As Antioxidant On Shear Bond Strength Of Nanofilled Composite Restoration In Enamel After Bleaching In Office: In Vitro Study
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| Author:
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SALLY SALSALINA, TRIMURNI ABIDIN, DENNIS
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| Abstract:
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Introduction:Post bleaching treatment, patients often require additional interventions for aesthetics such as replacement of previous restorations or veneer lamination. The adhesion of composite restorations after in-office bleaching treatment with 25-40% hydrogen peroxide (H2O2) cannot be done immediately, because of the residual free radicals as a result of oxidation of the bleaching material, it is recommended to delay adhesive treatment for 1-3 weeks. If the adhesive action is taken immediately, the shear bond strength of the restoration can be reduced. Free radicals can interfere with resin infiltration and inhibit complete polymerization. The use of antioxidants as an alternative treatment that effectively eliminates residual free radicals and improves the shear bond strength of post-bleaching restorations. Sodium ascorbate is an antioxidant that has been known wide to scavenge free radicals, so adhesive restoration can be taken immediately after bleaching. Natural resources being developed like pomegranate peel (punica granatum) which is rich in antioxidants.
Objective: This study aims to compare the differences of antioxidant sodium ascorbate and pomegranate peel extract 5% and 7.5% concentrations which can increase the shear bond strength of nanofilled composite restorations in teeth after bleaching with 25% and 40% H2O2.
Materials and Methods: Thirty-two human incisors were divided into eight groups. The sample was treated with bleaching, then labial veneer preparation. In groups A and D 10% sodium ascorbate antioxidant was applied, groups B and E with 5% pomegranate peel extract and groups C and F with 7.5% pomegranate peel extract for 10 minutes. Groups G and H are groups without antioxidants. Then all samples were restored with nanofilled composites. The shear bond strength of the composite resins was tested with universal testing machine.
Results: The highest shear bond strength of the composite resin was in the bleaching group of 40% hydrogen peroxide and using 7.5% antioxidant pomegranate peel extract, while the lowest was in the control group bleaching using 40% hydrogen peroxide and immediate restoration without antioxidants.
Conclusion:In conclusion, application of 7.5% pomegranate peel extractas as an oantioxidant of post bleaching treatment with 40% H2O2is effective in giving benefit to achieve higher shear bond strength of composite nanofilled restoration than the other groups.
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| Keyword:
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bleaching, antioxidants, pomegranate peel extract, shear bond strength
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| EOI:
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| DOI:
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https://doi.org/10.31838/ijpr/2020.12.04.601
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| Download:
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