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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Interproximal caries detection: near-infrared light transillumination (NILT) compared to bitewing radiograph

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This review of the accuracy of the near-infrared light transillumination (NILT) for the detection of interproximal dental caries in permanent dentition included 13 studies with 6 contributing to a meta-analasis. Findings suggest that NILT is reasonably comparable to bitewings.

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Palatally Displaced Permanent Canines: Interceptive management

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This review of orthodontic procedures for the management of displaced permanent canines in the mixed dentition. 5 RCTs, all at high risk of bias were identified with treatment comparisons being mainly based on single studies.

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Subgingival instrumentation for treating periodontitis

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This review evaluating the efficacy of subgingival instruments for the treatment of periodontitis included 19 RCTs. The findings show that mechanical subgingival instrumentation is efficacious in the nonsurgical treatment of periodontitis, irrespective of type of instrument or mode of delivery.

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Non-surgical periodontal treatment and oral health related quality of life

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This review of the evidence for the relationship between non-surgical periodontal therapy (NSPT) and patient-based outcomes included 13 mainly observational studies. While the findings suggest that NSPT improves oral health related quality of life but the quality of the evidence is limited.

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Third molars: Which surgical technique for removal?

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This Cochrane review upate compares the relative benefits and risks of different techniques for surgical removal of mandibular wisdom teeth. While the review includes 25 new trials the quality of the studies was variable with many having biases that could have influenced the findings so no meaningful conclusions could be drawn.

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Root resorption: incidence after different types of traumatic dental injury

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This review of assess the incidence of different types of root resorption after concussion, subluxation, lateral luxation, intrusive luxation, and extrusive luxation included 14 observational studies. Findings suggest that resorption is most common following intrusive luxation.

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MRONJ: Medication-related osteonecrosis of the jaw management strategies

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15 systematic reviews were included in this review of teh treament and management of medication-related osteonecrosis of the jaw (MRONJ). The reviews only identified weak evidence to support treatment protocols for MRONJ so high quality well reported RCTs are needed.

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Occlusal splints for the management of temporomandibular disorders

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This network meta-analysis assessing the effectiveness of various types of occlusal splint in the management of temporomandibular disorders (TMDs) included 48 RCTs suggesting that a hard stabilisation splint achieves superior results in patients with myogenous TMDs. However, many of the included studies are small so teh quality of the evidence is low.

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Complete dentures how long do they last?

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This review of the longevity of complete dentures included 42 studies (22 cross-sectional ,22 cohort studies) mainly conducted in a university setting with the findings suggesting a longevity of 10.1 ±4.0 years.

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Propolis-based mouthwashes

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This review evaluating the evidence regarding the efficacy of propolis-based mouthwash on dental plaque and gingival inflammation included 9 RCTs. While the findings suggest potential benefit from propolis-based mouthwash the quality of the available evidence is very low and additional high quality studies are needed to assess any benefits.

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