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Randomized Controlled Trial
. 2016 Apr;38(2):140-5.
doi: 10.1093/ejo/cjv026. Epub 2015 May 4.

A cost minimization analysis of early correction of anterior crossbite-a randomized controlled trial

Anna-Paulina Wiedel  1 , Anders Norlund  2 , Sofia Petrén  3 , Lars Bondemark  3
Affiliations
Randomized Controlled Trial

A cost minimization analysis of early correction of anterior crossbite-a randomized controlled trial

Anna-Paulina Wiedel et al. Eur J Orthod. 2016 Apr.

Abstract

Objective: Economic evaluations provide an important basis for allocation of resources and health services planning. The aim of this study was to evaluate and compare the costs of correcting anterior crossbite with functional shift, using fixed or removable appliances (FA or RA) and to relate the costs to the effects, using cost-minimization analysis.

Design, setting, and participants: Sixty-two patients with anterior crossbite and functional shift were randomized in blocks of 10. Thirty-one patients were randomized to be treated with brackets and arch wire (FA) and 31 with an acrylic plate (RA). Duration of treatment and number and estimated length of appointments and cancellations were registered. Direct costs (premises, staff salaries, material, and laboratory costs) and indirect costs (the accompanying parents' loss of income while absent from work) were calculated and evaluated with reference to successful outcome alone, to successful and unsuccessful outcomes and to re-treatment when required. Societal costs were defined as the sum of direct and indirect costs.

Interventions: Treatment with FA or RA.

Results: There were no significant differences between FA and RA with respect to direct costs for treatment time, but both indirect costs and direct costs for material were significantly lower for FA. The total societal costs were lower for FA than for RA.

Limitations: Costs depend on local factors and should not be directly extrapolated to other locations.

Conclusion: The analysis disclosed significant economic benefits for FA over RA. Even when only successful outcomes were assessed, treatment with RA was more expensive.

Trial registration: This trial was not registered.

Protocol: The protocol was not published before trial commencement.

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Figures

Figure 1.
Figure 1.
Occlusal view of the removable appliance (A), and the fixed orthodontic appliance (B).
Figure 2.
Figure 2.
Flow diagram of children in the mixed dentition stage with anterior crossbite.
See this image and copyright information in PMC

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