Orthodontic treatment with fixed appliance had no impact on clinical attachment level

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This review of the impact of fixed appliance orthodontic treatment on clinical attachment levels included 9 small prospective studies finding no no clinically relevant detrimental effect. However the overall level of evidence is low to very low.

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Fixed appliance orthodontics: extraction or non-extraction and soft tissue changes

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52 studies were identified for this review of the effect of extraction or non-extraction fixed orthodontic treatment of soft tissue profiles . However they were mainly poor quality retrospective studies providing very low quality evidence suggesting that tooth extractions might be associated with differences in the soft tissue profile compared to non-extraction treatment.

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Clear aligners: little evidence available to support their effectiveness

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This review of clear aligners for orthodontic treatment only identified 4 small studies of limited quality providing little evidence to support their effectiveness.

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Lingual fixed orthodontic appliances: insufficient evidence of effectiveness

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11 studies were identified for this review of lingual fixed orthodontic appliances. while some benefits were suggested the quality of the available studies was very low providing insufficient evidence of the effectiveness of lingual appliances.

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Post-orthodontic white spot lesions – lack of reliable evidence for management strategies

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Only 8 studies at high risk of bias were available for this review of treatments for post orthodontic white spot lesions (WSLs) . They provide little reliable evidence to support remineralising or camouflaging strategies to manage WSLs.

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Orthodontic treatment with fixed appliances – how long does it take?

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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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Class II malocclusion- fixed or removable functional appliances?

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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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Orthodontic bonding: trial suggests primer not needed

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This trial of the effects of primer on the bracket failure rate in orthodontic patients involved 49 patients, using a cross-mouth design; and found fewer bonding failures in the non-primer group 5.5%, compared with 3.1% in primer setting and adjusted odd ratio of 1.89 (95% CI 0.97–3.68).

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Social media and care of orthodontic appliances

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This randomised trial examined the use of social media (YouTube ) for the provision of patient information to those undergoing fixed orthodontic treatment. A larger improvement in knowledge was seen in the YouTube group at 6-8 weeks.

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