Comparison of post-treatment changes with and without retention in adolescents treated for maxillary impacted canines-a randomized controlled trial.

European Journal of Orthodontics
Sasan NaraghiMikael Sonesson

Abstract

To evaluate whether retention is needed after orthodontic treatment of impacted maxillary canines. Two-arm parallel group single-centre randomized controlled trial. Sixty-three patients, 39 girls and 24 boys, were recruited to the study. The inclusion criteria were patients with at least one impacted or unerupted maxillary canine, and moderate irregularity of the maxillary six anterior teeth according to Little's index (LI). After gaining informed consent from the patient and their custodians, the patients were randomized to one of two groups, i.e. to a non-retention group or a retention group. The randomization process was prepared and carried out by an independent person not involved in the trial and the randomization used blocks of 20 (10 + 10). Primary outcomes were changes in single contact point discrepancy, and LI measured on digitalized three-dimensional study casts 1-year post-treatment. The study casts were anonymized before assessment and the changes were blinded for the assessor. Data were evaluated on an intention-to-treat basis. Thus, all randomized patients were incorporated into the final analysis. In the non-retention group a 10-week interim period was used to detect patients who eventually have a relapse immed...Continue Reading

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Citations

Jun 13, 2021·British Dental Journal·Padhraig S Fleming
Jun 13, 2021·British Dental Journal·Declan Millett
Jun 13, 2021·British Dental Journal·Simon J LittlewoodSasan Naraghi

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