Palatally displaced canines: Procedures to promote eruption

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This Cochrane review update of interceptive procedures included 4 RCTs to promote the eruption of palatally displaced permanent canines (PDCs) involving a total of 199 patients. The findings indicate that extraction of the primary canine man increase the the proportion of erupted PDCs but the evidence is very uncertain.

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Posterior crossbites – orthodontic treatments

Orthodontic

This Cochrane review update of the effects of different orthodontic treatments for posterior crossbites included 31 RCTS eight of whihc were at low risk of bias. They found that for children iaged 7 to 11 years old), quad-helix and expansion plates were more beneficial than no treatment for correcting posterior crossbites.

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Tooth crowding in children: Which orthodontic intervention?

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This Cochrane review of the effects of orthodontic interventions for preventing or correcting crowded teeth in children included 24 RCTs. A wide range of interventions were assessed typically is small single studies so the available evidence is of very low certainty.

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

iStock_000002551343XSmall colourful braces on teeth

This review of the the treatment duration required to achieve whole-arch alignment of the mandibular dentition using fixed appliances included 35 RCTs. The pooled duration for whole-arch alignment in the mandible was 263.0 days/8.8 months (95%CI: 6.2 to11.3 months). Mandibular incisor alignment was achieved in 100.7 days/3.4 months (95%CI: 2.8 to 3.9 months).

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Mobile applications and behaviour change in orthodontic patients

This RCT looked at whether Mentalization Based Treatment for Adolescents reduced self-harming beahviour

This review of the effectiveness of mobile applications and social media-based interventions in inducing behaviour change among orthodontic patients included 16 RCTs. While the findings suggest some limited beneficial changes in orthodontic patients the interventions are very hetrogeneous and not based on clear behavioural change theory.

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Malocclusion and dental caries

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This review of malocclusion and the severity of dental caries among children and adolescents in the permanent dentition included 5 cross-sectional studies suggesting an association. However the quality of the evidence is limited so should be interpreted cautiously.

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Orthodontic ligation methods and biofilm formation

iStock_000002551343XSmall colourful braces on teeth

This review comparing elastomeric ligation with self-ligation and steel wire ligation for orthodontic appliances and their effect on clinical outcomes included 11 RCTs. The findings suggest no significant differences although the trials were small with a majority at high risk of bias.

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Orthodontic retainers and periodontal health

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This review comparing the effects of vacuum-formed retainers (VFR) and Hawley retainers (HR) on periodontal health included 6 RCTs. While the findings suggests a statistical benefit in favour of HR in the short term the studies are small, short-term and most ( 5) were considered to be at high risk of bias.

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Ten Years of the Dental Elf

The Dental Elf

It is now 10 years since the very first Dental Elf Blog. Since then we have published 1626 blogs covering a wide range of topics so we present a brief overview of the categories covered.

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Pulp necrosis: Is it induced by orthodontic tooth movement?

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This review evaluating the evidence to support the possibility that orthodontic tooth movements could induce pulp necrosis included 12 studies. While the findings indicate there is evidence that these treatments do not induce pulp necrosis it has low to very low quality.

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