14 studies ( 6 RCTs) were included in this review of corticotomy for facilitating orthodontic treatment. While the results found produce statistically and clinically meaningful temporary increases in the rate of orthodontic tooth movement the studies were small and of low quality.
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25 studies include 20 RCTs and 5 controlled trials were included this review. They were all conducted in a hospital or university setting and found that treatment duration was on average 19.9 months (95% CI; 19.58 to 20.22 months) over 17.81visits ( 95%CI; 19.71 to 20.32 months)
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This review of patient expectations of orthodontic treatment included 13 studies but found that the methodological quality was poor so recommended that future studies are needed based on well constructed theory.
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Only 5 small studies were included in this review of the long term outcomes of tooth autotransplantation. All but one was retrospective so the findings which suggest 81% survival at 6 years should be interpreted with caution.
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This latest review of digital orthodontic models includes 35 studies, the majority directly compared digital and plaster models. The overall quality was considered moderate and digital models were considered to be a as reliable as traditional plaster models, with high accuracy, reliability, and reproducibility.
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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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40 cross-sectional studies involving a range or oral health related quality of life measures were included in this review. They found that malocclusion has a small impact on oral health related quality of life.
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This review looked at the impact of premolar extraction on soft tissue profile in class II division 1 malocclusions. 13 studies were included the majority being retrospective. There is some evidence to suggest an increase in the nasolabial angle but the quality is limited.
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Factors affecting relapse after treatment of class II malocclusion was investigated in this review. Only 17 retrospected studies met the review criteria providing limited evidence to support the influence of factors predictive of sagittal stability following orthodontic treatment.
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This review looked at the efficacy of fixed and removable functional appliances for the treatment of class II malocclusion. Just 4 trials were identified 2 of which were randomised. Limited evidence found fixed and removable functional appliances are effective in reducing overjet in children but there is little evidence to differentiate the approaches.
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