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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Osteoradionecrosis incidence and the timing of dental extractions

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This review of whether the incidence of osteoradionecrosis differed between patients who have dental extractions before or after radiotherapy (RT) included 24 studies (19 retrospective 5 prospective). While the findings suggest that the incidence is similar if extractions are undertaken before or after RT the quality of the evidence is limited.

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Facial trauma in motorcyclists and helmet use

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This review of whether helmet use and the type of helmet reduce facial fractures in motorcycle accidents included • 26 cross-sectional studies involving 68,594 patients. The findings suggest fewer upper and mid-face fracture in helment wearers.

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Parental presence and children’s dental anxiety

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This review of whether parents’ presence in the room influences children’s behaviour, anxiety and fear during dental treatment included 16 studies. The findings suggest that parents’ presence in the operation room does not influence children’s (up to 12 years old) behaviour, anxiety and fear during dental treatment. However the included studies are all at high risk of bias so the certainty of the evidence is very low.

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Denture adhesives: Are they effective?

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This review of the efficacy of denture adhesives (DAs) for complete dentures included 39 studies ( 23 RCTs and 16 CCTs). None of teh included studies were at low risk of bias with the findings suggesting that Denture adhesives can improve denture retention, bite force and masticatory performance of complete denture wearers.

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Dental Fear in Adults

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This review aiming to estimate the global prevalence of dental fear in adults included 31 observational studies the majority of which were at high risk of bias. The findings suggest an overal prevalence of 15.3 % (95%CI; 10.23 to 21.15%).

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COVID-19 Dental Elf Blogs – 5

coronavirus 2 (SARS- CoV-2)

Since the emergence of the SARS-CoV-2 virus just over a year ago we have published a number of dental blogs relevant to COVID-19. The blogs cover topics such as dental teams’ generic risk of disease, baseline risk of covid-19, asymptomatic patients and the risk of community spread, digital thermometers, mouthwash use, surgical mask types, gown [read the full story…]

Ultrasound for the differential diagnosis of periapical lesions

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This review of the diagnostic accuracy of ultrasound in differentiating periapical lesions of endodontic origin in comparison with histopathology included 12 studies. While the findings suggest good levels of sensitifity and specificity for diagnosing periapical cysts and granulomasthere are concerns regarding the quality of the evidence.

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Caries detection using electrical conductance

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This Cochrane review of the diagnostic accuracy of different electrical conductance devices for the detection and diagnosis of non-cavitated coronal dental caries included 7 studies. The quality of the studies mean we are very uncertain of how electrical conductance devices are in detecting and diagnosing early tooth decay.

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Dental imaging methods for early caries detection and diagnosis

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This Cochrane review of the diagnostic accuracy of different dental imaging methods for early enamel lesions included 104 datasets from 77 studies. Low-certainty evidence suggests that imaging for the detection or diagnosis of early tooth decay may result in a relatively high proportion of false-negative results.

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