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Introduction: The purpose of this 2-arm parallel trial was to assess the effect of the AcceleDent Aura appliance (OrthoAccel Technologies, Houston, Tex) on the rate of maxillary premolar extraction space closure in adolescent patients., Methods: Forty Class II adolescents treated with full fixed appliances and maxillary premolar extractions participated in this randomized clinical trial. They were recruited in a private practice and treated by 1 clinician. Randomization was accomplished in blocks of 10 patients assigned to either a no-appliance group or the AcceleDent Aura appliance group with the allocations concealed in opaque, sealed envelopes. Both the operator and the outcome assessor were blinded; however, it was not feasible to blind the patients. Models were taken of the maxillary arch at the start of space closure and just before complete space closure. The space was measured parallel to the occlusal plane from the cusp tips of the teeth mesial and distal to the extraction spaces., Results: There was no clinically (0.05 mm per month; 95% confidence interval [CI], -0.24, 0.34) or statistically significant difference in the rate of space closure (P = 0.74). In both the univariable and multivariable analyses, the mean rate of tooth movement was slower by 0.13 mm per month (95% CI, -.26, .005) on the left side compared with the right side, but this was not statistically significant (P = 0.06)., Conclusions: The AcceleDent Aura appliance had no effect on the rate of maxillary premolar extraction space closure. Only a few participants were considered to be good compliers with the appliance. However, the rate of space closure in the good compliers was similar to the overall group and did not appear to influence the result., Registration: This trial was not registered., Protocol: The protocol was not published before trial commencement., (Copyright © 2017 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.)

Self-ligating brackets have seen a great reemergence mainly as a result of the introduction of purportedly more efficient appliances as well as the marketing efforts of orthodontic companies to promote innovative products and differentiate themselves in the marketplace. The Speed bracket (Strite Industries, Ltd, Cambridge, Ontario), introduced in the early 1980s, was the first viable product, whereas now almost all major orthodontic companies offer a self-ligating bracket to their customers. Several capabilities/advantages over conventional brackets have been attributed to the self-ligating appliances without the accompanied evidence to support the claims. In this article, we will cover the available evidence in the orthodontic literature that deals with the clinical efficiency of the self-ligating brackets. [ABSTRACT FROM AUTHOR]

The article offers tips for debonding an orthodontic appliance from the teeth.