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Scientific Section |
Rockhampton, Australia
Countess of Chester NHS Trust, Chester, UK
Department of General Practice and Primary Care, Aberdeen, UK
Address for correspondence: Mr S. M. Chadwick, Countess of Chester NHS Trust, Health Park, Liverpool Road, Chester CH2 1UL, UK. Email: Steve.Chadwick{at}coch.nhs.uk
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Abstract |
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Objective: The primary objective of this prospective clinical trial was to assess the clinical bond failure rates of orthodontic brackets bonded using a self-etching primer (SEP), compared with brackets bonded using a conventional acid-etched technique with control adhesive (TransbondTM). A secondary aim was to investigate whether characteristics of the operator, patient or tooth bonded had any influence on bracket failure.
Design: Single-centre randomized controlled clinical trial. Thirty-four patients were bonded, each being randomly assigned to either the test or control adhesive.
Setting: NHS Hospital Orthodontic Department, Chester, UK.
Subjects: Orthodontic patients requiring fixed appliance treatment.
Main outcome measures: Bond failure.
Main outcome results: Failure rates over the initial 6-month period were 2.0% (TransbondTM) and 1.7% (SEP) with no statistically significant difference between the two groups. Over the duration of the fixed appliance treatment, bond failure rates increased, but remained acceptable at 7.4 % (TB) and 7.0% (SEP), respectively. When operator, patient and tooth characteristics were analysed, only the bracket location was found to be significant. Maxillary brackets were more likely to fail than mandibular brackets (RR 0.47%; 95% CI 0.22, 1.03). The failure rate for brackets in our study was low when compared with previous studies.
Conclusions: Both the acid-etched control and self-etching primer in combination with adhesive pre-coated brackets were successful for clinical bonding. Their combined failure rate was lower than that reported in similar trials.
Key words: Bond failure, brackets, self-etch primer, TransbondTM
This article has been cited by other articles:
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  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]
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N. A. Wenger, S. Deacon, and N. W. T. Harradine A randomized control clinical trial investigating orthodontic bond failure rates when using Orthosolo universal bond enhancer compared to a conventional bonding primer J. Orthod., March 1, 2008; 35(1): 27 - 32. [Abstract] [Full Text] [PDF]
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A. Reis, J. E. d. Santos, A. D. Loguercio, and J. R. de Oliveira Bauer Eighteen-month bracket survival rate: conventional versus self-etch adhesive Eur J Orthod, February 1, 2008; 30(1): 94 - 99. [Abstract] [Full Text] [PDF]
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F. Luther Award winning papers. So what? J. Orthod., December 1, 2007; 34(4): 209 - 212. [Full Text] [PDF]
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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]
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F. Luther With great pleasure: a prize for best scientific paper, and finding out what readers think J. Orthod., September 1, 2007; 34(3): 153 - 153. [Full Text] [PDF]
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