European Journal of Molecular & Clinical Medicine

Abstract

Introduction: After bleaching treatment, patients often require additional intervention for composite resin restorations. The initial composite restorations after bleaching with hydrogen peroxide (H₂O₂) 25-40% cannot be done immediately, due to the presence of free radical residues as a result of oxidation of the bleaching material it is recommended to delay bonding for 1-3 weeks. If the adhesive restoration are carried out immediately, the shear bond strength of the restoration would reduced. Free radicals can interfere with resin infiltration and inhibit complete polymerization. The use of antioxidants as an effective alternative treatment to overcome free radical residues and increase the shear strength of post-bleaching restorations. Alpha tocopherol is an antioxidant that has been known to bind free radicals, that adhesive action can be carried out immediately after bleaching. The potential natural resource being developed is moringa leaves (moringa oleifera lam) which is rich in antioxidants. The purpose of this study was to compare the differences in the use of antioxidants 10% alpha tocopherol and 10% ethanol extract of moringaleavescanincreasetheshearbond strengthoftheattachment in nanofilledcompositerestorationsonteethafterbleachingwith 40% H₂O₂