DesignRandomised controlled trial.InterventionPatients aged 12-30 years requiring fixed orthodontic treatment were eligible and were randomly allocated to treatment with the Insignia customised orthodontic system or the Damon Q noncustomised orthodontic system.Outcome measureThe primary outcome measure was treatment duration. Secondary outcomes were quality of treatment result; the degree of improvement graded using the Peer Assessment Rating (PAR) score; number of visits from the first visit after bonding to debonding; number of loose brackets; time required for treatment planning; and number of complaints.ResultsOne hundred and eighty patients entered the trial. Four were lost to follow-up and two did not complete treatment, so 174 were analysed. Treatment duration was 1.29 ± 0.35 years in the customised group and 1.24 ± 0.37 years in the noncustomised group. The PAR did not differ significantly between groups. However, the orthodontist had a significant effect on treatment duration, quality of treatment outcome and number of visits (P < 0.05). Compared to the noncustomised group, the customised group had more loose brackets, a longer planning time and more complaints.ConclusionsThe customised orthodontic system was not associated with significantly reduced treatment duration, and treatment quality was comparable between the two systems.

Postgraduate trainee in Orthodontics Charles University Prague

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