Indian Journal of Dental Research

ORIGINAL RESEARCH
Year
: 2018  |  Volume : 29  |  Issue : 5  |  Page : 646--650

Effect of antioxidant on orthodontic bracket bond strength after vital bleaching


Deepti Yadav1, Vineet Golchha1, Nandini Kamat2, Rahul Paul1, Pooja Sharma3 
1 Department of Orthodontics and Dentofacial Orthopedics, Inderprastha Dental College and Hospital, Ghaziabad, Uttar Pradesh, India
2 Department of Orthodontics and Dentofacial Orthopedics, Goa Dental College, Bambolim, Goa, India
3 Department of Physiotherapy, Amity University, Noida, Uttar Pradesh, India

Correspondence Address:
Dr. Vineet Golchha
Department of Orthodontics and Dentofacial Orthopedics, Inderprastha Dental College and Hospital, Ghaziabad, Uttar Pradesh
India

Objectives: The objective of this study is to compare the neutralization effect of various antioxidant agents on the bond strength of composite resins on stainless steel and ceramic brackets immediately bonded to previously bleached teeth. Materials and Methods: One hundred and sixty human maxillary premolars were used for the study. Teeth were divided into four groups (n = 40): Group 1 (control), Group 2 (bleached), Group 3 (sodium ascorbate), and Group 4 (tocopherol acetate). Each group was divided into two subgroups, one was bonded with stainless steel and other with ceramic brackets using 3M Transbond XT. Universal testing machine was used to determine the shear bond strength (SBS). Results: Among the metal brackets, Group 1A had the highest SBS (12.18 + 1.41 MPa) and Group 2A had the least SBS (6.18 + 1.49 MPa). Weibull analysis indicated that bond strength for a 90% probability of failure was highest for Group 1A (13.99 MPa) and lowest for Group 2A (8.49 MPa). For ceramic brackets, Group 1B had the highest SBS (13.80 + 1.69 MPa) and Group 2B had the least SBS (8.05 + 1.85 MPa). Weibull analysis indicated that bond strength for a 90% probability of failure was highest for Group 1B (14.61 MPa) and lowest for Group 2B (8.85MPa). Conclusion: The in vitro study showed that bleaching reduced the SBS significantly, and this could be effectively reversed by the application of antioxidants in both metal and ceramic brackets.


How to cite this article:
Yadav D, Golchha V, Kamat N, Paul R, Sharma P. Effect of antioxidant on orthodontic bracket bond strength after vital bleaching.Indian J Dent Res 2018;29:646-650


How to cite this URL:
Yadav D, Golchha V, Kamat N, Paul R, Sharma P. Effect of antioxidant on orthodontic bracket bond strength after vital bleaching. Indian J Dent Res [serial online] 2018 [cited 2020 Feb 26 ];29:646-650
Available from: http://www.ijdr.in/article.asp?issn=0970-9290;year=2018;volume=29;issue=5;spage=646;epage=650;aulast=Yadav;type=0