Skip Navigation



The European Journal of Orthodontics Advance Access published online on June 8, 2006
The European Journal of Orthodontics, doi:10.1093/ejo/cjl007
This Article
Right arrow Full Text (Rapid PDF)
Right arrow All Versions of this Article:
28/5/444    most recent
cjl007v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Murfitt, P. G.
Right arrow Articles by Herbison, G. P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Murfitt, P. G.
Right arrow Articles by Herbison, G. P.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. Published by Oxford University Press on behalf of the European Orthodontics Society. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Article

A randomised clinical trial to investigate bond failure rates using a self-etching primer

P. G. Murfitt 1, A. N. Quick 1 *, M. V. Swain 1, and G. P. Herbison 1

1 University of Otago, Dunedin, New Zealand

* To whom correspondence should be addressed.
A. N. Quick, E-mail: andrew.quick{at}stonebow.otago.ac.nz


  Abstract

This clinical trial evaluated, over a 12-month period, the performance of brackets bonded to teeth etched and primed with TransbondTM Plus Self-Etching Primer (SEP) when compared with a conventional separate two-step etch and primer system.

Thirty-nine randomly selected patients requiring fixed appliance therapy were entered into the study. Random allocation of each etching system, along with a ‘split-mouth cross-quadrant’ design was used. A total of 661 brackets were placed by two operators. The failure and survival rates of the brackets were determined for age and gender of the patients, each etching system, operator, mode of failure, tooth position in the dental arch, and number of manipulations prior to curing the adhesive.

Statistical analysis showed that SEP had a significantly higher bond failure rate (11.2 per cent) than the conventional etch and primer system (3.9 per cent) at the P = 0.001 level. Cox's proportional hazards regression showed the conventional etch and primer system to have a 60 per cent reduced chance of bracket failure over a 12-month observation period, while males had a 2.4 times increased risk compared with females. The predominant mode of failure was at the composite enamel interface for the SEP, while for the conventional etch and primer system, it was within the composite adhesive. No statistically significant differences were found for the failure rate with respect to the age of the patient, operator, tooth location, or the number of manipulations of the bracket.

This in vivo study showed that brackets bonded using SEP had an increased clinical bond failure rate compared with the conventional, separate, etch and prime system.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Eur J OrthodHome page
S. Elekdag-Turk, D. Isci, T. Turk, and F. Cakmak
Six-month bracket failure rate evaluation of a self-etching primer
Eur J Orthod, April 1, 2008; 30(2): 211 - 216.
[Abstract] [Full Text] [PDF]

Home page
 J. Orthod.Home page
P. Banks and B. Thiruvenkatachari
Long-term clinical evaluation of bracket failure with a self-etching primer: a randomized controlled trial
J. Orthod., December 1, 2007; 34(4): 243 - 251.
[Abstract] [Full Text] [PDF]


Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.