16 studies were included in this review but the majority were retrospective with only 1 RCT at unclear risk of bias. While the available data suggests satisfactory clinical outcomes, no high quality evidence is available.
[read the full story...]Orthodontic aligners: little evidence to assess their effectiveness
The use of clear orthodontic aligners is increasing, despite searching a wide range of databases this review only identified a limited number of small studies. The quality of the studies was not sufficient to draw any evidence-based decisions on the effectiveness of orthodontic aligners so better quality studies are needed.
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