J. Orthod.
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British Journal of Orthodontics, Vol 23, 121-124, Copyright © 1996 by British Orthodontic Society

ARTICLES

The effect of etch time and debond interval upon the shear bond strength of metallic orthodontic brackets

M Bin Abdullah and WP Rock
School of Dentistry, University of Birmingham, U.K.

Groups of orthodontic brackets were attached to enamel after etching for 15, 30 or 60 seconds. They were debonded by shear forces after 5 or 15 minutes, or 24 hours. The 15 seconds etch/5 minutes debond time specimens had much lower shear strengths than other groups. Sixty- second specimens showed evidence of tooth surface damage after debonding. Fifteen seconds of etching is therefore recommended routinely for bonding brackets. If a bracket is to be ligated within 5 minutes of placement, 30 seconds etching is recommended. A 60-second etch is considered too severe and should not be used.


This article has been cited by other articles:


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 Eur J OrthodHome page
P. Murfitt, A. Quick, M. Swain, and G. Herbison
A randomised clinical trial to investigate bond failure rates using a self-etching primer
Eur J Orthod, October 1, 2006; 28(5): 444 - 449.
[Abstract] [Full Text] [PDF]

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K. House, A. J. Ireland, and M. Sherriff
An in-vitro investigation into the use of a single component self-etching primer adhesive system for orthodontic bonding: a pilot study.
J. Orthod., June 1, 2006; 33(2): 116 - 124.
[Abstract] [Full Text] [PDF]

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S. Sunna and W. P. Rock
An Ex Vivo Investigation into the Bond Strength of Orthodontic Brackets and Adhesive Systems
J. Orthod., March 1, 1999; 26(1): 47 - 50.
[Abstract] [Full Text] [PDF]


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Copyright © 1996 British Orthodontic Society.