Digital v conventional impressions for implant-supported fixed complete arch prostheses

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This review comparing digital scans and conventional impressions for complete arch implant-supported fixed prostheses included 6 RCTs. The findings suggest that digital scans significantly reduce the the time required compared with conventional impressions for complete arch implant-supported prostheses. However, there are only a small number of small studies available with only one of the six included being at low risk of bias.

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Plaque accumulation with clear aligners and fixed orthodontic appliances

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This review comparing plaque accumulation in orthodontic patients undergoing clear aligner (CA) and conventional fixed appliance treatment included 14 studies. The findings suggested less plaque accumulation with CA but all the included studies were at moderate to high risk of bias.

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Extraction or non-extraction treatment and orthodontic outcomes

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This review of premolar extraction v non-extraction orthodontic treatment included 30 studies. Of these studies were 29 were retrospective and all 30 studies were considered to be at high risk of bias. The certainty of evidence is vey low so additional high quality research is required.

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Coronectomy for lower third molar surgery

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This review of coronectomy versus extraction of third molars in patients at increased risk of inferior alveolar nerve (IAN) injuries included 42 observational studies. The findings indicate lower a reduction in the odds of IAN sensory loss in favour of coronectomy and an increase in the odds of surgical reintervention.

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Cement-or screw-retained implant-supported prostheses and peri-implant disease

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This review comparing the incidence of peri-implant disease with cement- and screw-retained prostheses included 6 RCTs. The findings suggest no difference in level of peri-implant disease with cement- or screw retained prosthesis. However, the studies are small none of them are at low risk of bias. Consequently the findings should be interpreted cautiously.

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Low level laser therapy for burning mouth syndrome

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This review to evaluate the effect of low-level laser therapy (LLLT) on burning pain, quality of life, and negative emotions in patients with burning mouth syndrome included 14 RCTs only two of which were at low risk of bias.While the findinds suggest that LLLT has a positive effect the quality of evidence means the findings should be interpreted cautiously.

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Recurrent aphthous stomatitis – topical medications

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This review of different topical medications for the management of recurrent aphthous stomatitis (RAS) included 43 RCTs. No significant differences were found for any if the treatments assessed and a majority of the included RCTs (76%) were considered to be at high risk of bias.

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Vitamin D and dental caries risk in children

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This review of the association between higher dental caries experience and lower serum vitamin D levels in children included 13 studie. The findings suggest higher levels of caries in patients with lower vitamin D levels.

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Edentulism in diabetics compared to non-diabetics

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This review of the prevalence of edentulism among diabetic patients compared to non-diabetic people included 7 cross-sectional studies. The findings suggest a higher level of edentulism in diabetic patients but the findings should be interpreted cautiously.

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Metal or fibre posts for restoration of endodontically treated teeth?

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This review of the comparative efficacy of fibre and metal posts used for the restoration of endodontically treated teeth included 25 RCTs. The findings suggest that fibre post performe better than metal posts but the findings should be interpreted with caution.

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