This Cochrane review of the effects of initial arch wires for the alignment of teeth with fixed orthodontic appliances includes 12 RCTs and updates a previous review. The review finds moderate quality evidence shows that archwires of coaxial superelastic nickel-titanium (NiTi) can produce greater tooth movement over 12 weeks than arch wires made of single-strand superelastic NiTi.
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8 studies were included in this review of vibrational stimulus to accelerate orthodontic treatment. The studies were small and of short duration providing very low quality evidence to support any effect. Further high quality studies of longer duration are needed.
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Orthodontic treatment is based on the principle that if a force is applied to a tooth for a period of time it will move. The applied force produces changes in both the supporting structures and in the pulp of the tooth. Pathological changes have been reported in the pulp in response to these forces so [read the full story…]
