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VOLUME 14 , ISSUE 4 ( July-August, 2013 ) > List of Articles


Long-Term Evaluation of Clinical Performance of Directbonded Brackets: An Epidemiologic Survey

Mohamad Hossein Ahangar Atashi

Citation Information : Atashi MH. Long-Term Evaluation of Clinical Performance of Directbonded Brackets: An Epidemiologic Survey. J Contemp Dent Pract 2013; 14 (4):738-742.

DOI: 10.5005/jp-journals-10024-1393

Published Online: 01-12-2013

Copyright Statement:  Copyright © 2013; The Author(s).



The objective of the current epidemiologic study was to investigate characteristics associated with bracket failure in bonded brackets.

Materials and methods

A retrospective study on data of 144 patients treated during 2009 to 2012 was done. Baseline data including age, gender, malocclusion, bite type and debonding incidences per teeth were retrieved. ANOVA analysis and t-test were used to evaluate the data.


Second premolar teeth had significantly higher debonding incidences. Patients’ age was negatively correlated with debonding incidences. No difference was observed for various types of malocclusion (class I, II and III), arch side (right or left) or arch location (upper or lower). However, deep bite patients had significantly higher failure incidents.


For a total of 144 patients with 2,524 bonded brackets, the overall failure rate was 7.8%. Deep bite was the only factor that was associated with higher bracket failure. The bracket failure incidents tend to decrease as patients age increase.

Clinical significance

Deep bite patients and also second premolar teeth seem to be especially prone to debonding incidents. Care must be taken to avoid premature contacts in deep bite patients. Also strict adherence to moisture control protocols when bonding second premolar teeth is recommended since these teeth are at increased risk for debonding.

How to cite this article

Atashi MHA, Shahamfar M. Long-Term Evaluation of Clinical Performance of Direct-bonded Brackets: An Epidemiologic Survey. J Contemp Dent Pract 2013;14(4): 738-742.

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