This review comparing the effect of CAD/CAM-based and conventional fixed retainers on the stability of treatment outcomes and periodontal health in patients undergoing orthodontic retention using fixed retainers includeds 7 RCTs. The studies are of moderate size and relatively short duration (6 to 12months) and there are quality concerns so the findings should be viewed cautiously.
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This Cochrane review update evaluating different retention strategies used to stabilise tooth position after orthodontic braces included 47 RCTs. However, only 11 RCTs were at low risk of bias and the overall assessment of the certainty of the evidence is low to very low which means that firm recommendations on orthodontic retention strategies cannot be made.
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In this blog Aljeeta Kadam looks at a review of adjuncts or alternatives to mechanical retention in preserving post orthodontic treatment outcomes. Only 7 studies were included in the review providing very low quality evidence about the use of adjuncts and alternatives.
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This review of the efficiency of the vibrating devices in accelerating orthodontic tooth movement identified 6 RCTs the majority being short term and at high risk of bias. The RCTs suggested no difference with the use of vibrational devices.
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10 trials were included in this review of the effectiveness of Hawley retainer following orthodontic treatment providing low quality evidence that performance was similar to other retainers.
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15 studies involving 1722 patients were included in this Cochrane review update on orthodontic retention. However, there was insufficient high quality evidence to make recommendations on retention procedures.
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