Indian Journal of Dental Research

ORIGINAL RESEARCH
Year
: 2016  |  Volume : 27  |  Issue : 4  |  Page : 410--414

Assessing the effects of hydrogen peroxide bleaching agent on the shear bond strength of orthodontic brackets


Augusto Ricardo Andrighetto1, Eduardo Henrique de Lećo Withers1, Karlos Giovani Grando1, Aldrieli Regina Ambrosio2, Roberto Hideo Shimizu1, Ana Clįudia Melo1 
1 Department of Orthodontics, Latin American Institute of Dental Research and Education, Curitiba, Paraná, Brazil
2 Department of Orthodontics, University of São Paulo State (UNESP), Araraquara, São Paulo, Brazil

Correspondence Address:
Prof. Augusto Ricardo Andrighetto
Department of Orthodontics, Latin American Institute of Dental Research and Education, Curitiba, Paraná
Brazil

Background: Tooth bleaching is, today, one of the most widespread cosmetic treatments in dental practice,  so it is important to determine whether it can interfere with orthodontic bonding or not. Aim: The aim of this study was to assess the in vitro effects of 35% hydrogen peroxide bleaching agent on the shear bond strength of orthodontic brackets. Materials and Methods: Forty-five upper bicuspids were divided into three groups (n = 15). In the control Group (C), the brackets were bonded without previous bleaching treatment. Group 1 (G1) was treated with 35% hydrogen peroxide bleaching agent 24 h before bracket bonding. Group 2 was also bleached, and the brackets were bonded after 30 days. The shear bond strength of the brackets was measured using an EMIC machine, and the results were analyzed by ANOVA. Results: There were no statistically significant differences between the three groups (P > 0.05), with Group C showing a mean bond strength of 9.72 ± 2.63 MPa, G1 of 8.09 ± 2.63 MPa, and G2 of 11.15 ± 4.42 MPa. Conclusion: It was possible to conclude that 35% hydrogen peroxide bleaching agent does not affect the shear strength of orthodontic brackets bonded 24 h and 30 days after bleaching.


How to cite this article:
Andrighetto AR, de Lećo Withers EH, Grando KG, Ambrosio AR, Shimizu RH, Melo AC. Assessing the effects of hydrogen peroxide bleaching agent on the shear bond strength of orthodontic brackets.Indian J Dent Res 2016;27:410-414


How to cite this URL:
Andrighetto AR, de Lećo Withers EH, Grando KG, Ambrosio AR, Shimizu RH, Melo AC. Assessing the effects of hydrogen peroxide bleaching agent on the shear bond strength of orthodontic brackets. Indian J Dent Res [serial online] 2016 [cited 2022 May 23 ];27:410-414
Available from: https://www.ijdr.in/article.asp?issn=0970-9290;year=2016;volume=27;issue=4;spage=410;epage=414;aulast=Andrighetto;type=0