Journal of Pharmacy and Bioallied Sciences (Jan 2013)

The effect of bleaching of teeth on the bond strength of brackets: An in vitro study

  • Shiji Kunjappan,
  • Vadivel Kumaar,
  • Prithiviraj,
  • Vasanthan,
  • Syed Altaf Khalid,
  • Joseph Paul

DOI
https://doi.org/10.4103/0975-7406.113285
Journal volume & issue
Vol. 5, no. 5
pp. 17 – 20

Abstract

Read online

Aim: To determine the reversal effect of 10% sodium ascorbate, on the bond strength of previously bleached teeth with hydrogen peroxide. Materials and Methods: Sixty extracted maxillary premolars were selected and they were divided randomly into three groups. Group A teeth were etched and bonded; Group B bleached, etched and immediately bonded; Group C was subjected to bleaching, followed by treatment with 10% sodium ascorbate solution, then etched and bonded; Then all the three groups were subjected to testing procedure for bond strength. Results: The bond strength analysis was carried out by using instron, universal testing machine. In this study Group A had the maximum bond strength of 12.24 Mpa followed by Group C 11.62 Mpa and Group B 10.96 Mpa. Conclusion: Group C the experimental group which was treated with 10% sodium ascorbate following bleaching with 35% hydrogen peroxide provided higher bond strength compared to Group B which was bonded immediately after bleaching even though it was not statistically significant.

Keywords