Comparative Analysis of Different Flavonoids on the Immediate Shear Bond Strength of Bleached Enamel Surface: An ex-vivo Study

  • Nidhi Shrivastava
  • Marisha Bhandari
Keywords: Bleaching Agents, Sodium Ascorbate, Grape Seed Extract, Enamel, Adhesive Polymerisation


INTRODUCTION: Bleaching, although considered as the first choice of treatment for discoloured teeth, can be utilized in conjunction with composite resin bonding or veneering and porcelain laminate veneers, to provide a more esthetic result.
AIM: The aim of the ex-vivo study is to obtain a comparative analysis to evaluate the effectiveness of antioxidants on the immediate composite bond strength on bleached enamel surface.
MATERIALS AND METHOD: Freshly extracted human permanent maxillary central incisors were selected and prepared for the respective study. All the specimens then were randomly divided into two control groups and three experimental groups, each group consisting of 20 specimens each. Among these were three experimental groups 10% Sodium Ascorbate, 5% Grape Seed extracts (Proanthocyanidin, PA) & 10% Green tea extracts (catechins and epigallocatechin gallate, CA and EG) and two control groups (Positive control & Negative control).
RESULTS: When compared to Group 1 (positive control, 26.24 ± 0.90 MPa ), Group 3 (5%Grape seed extract; 32.17 ± 1.52 MPa), Group 4 (10% Sodium Ascorbate; 28.91 ±1.50 MPa ) and Group 5 (5% Green tea extract; 24.10 ± 1.21MPa ) showed significantly higher shear bond strength values.
CONCLUSION: The present study indicated that the shear bond strength of the antioxidant group (Group3) is higher than all three experimental groups. In addition, the shear bond strength of the bleached group (Group 2) is significantly lower than all the other groups. This implies that immediate use of antioxidants, contributes in reversal the bond strength of bleached enamel.


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Author Biographies

Nidhi Shrivastava

Associate Professor, Department of Dentistry, Mayo Institute of Medical Sciences, Barabanki, India

Marisha Bhandari

Reader, Department of Conservative Dentistry and Endodontics, Seema Dental College and Hospital, Rishikesh, India


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DOI: 10.26440/IHRJ/0503.06428
Published: 2021-06-25
How to Cite
Nidhi Shrivastava, Marisha Bhandari. Comparative Analysis of Different Flavonoids on the Immediate Shear Bond Strength of Bleached Enamel Surface: An ex-vivo Study. IHRJ [Internet]. 2021Jun.25 [cited 2023Mar.29];5(3):OR1-OR5. Available from:
Original Research(s)