Derek Richards

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Derek Richards is the Director of the Centre for Evidence-based Dentistry, Editor of the Evidence-based Dentistry Journal, Consultant in Dental Public Health with Forth Valley Health Board and Honorary Senior Lecturer at Dundee & Glasgow Dental Schools. He helped to establish both the Centre for Evidence-based Dentistry and the Evidence-based Dentistry Journal. He has been involved with teaching EBD and a wide range of evidence-based initiatives both nationally and internationally since 1994.

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Smoking cessation and tooth loss

This review provides strong evidence for quitting smoking and reducing your risk of dementia.

This review assessing whether smoking cessation reduced the risk of tooth loss included 14 cross-sectional and 7 longitudinal studies suggestign that the risk of tooth loss in former smokers is comparable to that of never smokers

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Mesenchymal stem cells in periodontal regeneration?

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This review evaluating the potential efficacy of mesenchymal stem cells in periodontal regeneration included 15 small studies of very low quality. Additional high quality RCTs are neeeded to assess effectiveness before clinicial use.

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Articaine: Is it the best local anaesthetic for teeth with irreversible pulpitis undergoing root canal treatment?

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5 systematic reviews were included in this umbrella review of whether articaine or lidocaine is the most appropriate local anaesthetic solution for teeth with irreversible pulpitis undergoing root canal treatment.

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Post and core restorations: does the ferrule effect influence success?

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This review evaluating the presence or absence of a ferrule influences the failure rate in fibre-reinforced composite (FRC) post-and-core restorations included 4 studies. While the findings indicate no differences in failure rates between restoration with and with out a ferrule the quality of the evidence is low.

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Guideline: Antibiotics for Dental Pain and Swelling

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This new guideline from the American Dental Association is about the the appropriate use of systemic antibiotics for the urgent management of symptomatic irreversible pulpitis with or without symptomatic apical pulpitis, pulp necrosis and symptomatic apical periodontitis and pulp necrosis and localized acute apical abscess.

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Partial pulpotomy for permanent posterior teeth with carious vital pulp exposure

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This review of the success rate of partial pulpotomy in treating permanent posterior teeth with carious vital pulp exposure included 11 studies 5 of which are RCTs. The findings suggest that partial pulpotomy is a reliable treatment option.

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Vitamin D deficiency: Is it a risk factor for recurrent aphthous stomatitis?

Researchers in this study wanted to see if people with learning disabilities had higher levels of vitamin D deficiency than the general population

This review of a possible association between vitamin D deficiency and recurrent aphthous stomatitis (RAS) included 5 case control studies providing limited evidence that low levels of serum vitamin D might be a risk factor for RAS.

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Pulpotomy in immature permanent teeth

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This review of different pulpotomy dressing agents for pulpotomy treatment in immature permanent teeth. While the review suggested that the various agents tested had similar success rates the findings should be viewed cautiously as all the studies were at high risk of bias.

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Third molar extraction: Does closure technique influence post-operative complications?

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This review to assess the influence of two suture methods on the postoperative complications of lower third molar extraction included 5 RCTs . Findings suggest the use of secondary closure has a favourable effect on pain, facial swelling, and trismus but the quality of the evidence is limited.

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Lasers for dentine hypersensitivity a network meta-analysis

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This review of the effects of different types of lasers on dentine hypersensitivity included 11 RCTs suggesting no significant differences between Er,Cr:YSGG, Nd:YAG, Er:YAG, and GaAlAs lasers both in the immediate term and at 1 month.

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