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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Root Caries: Incidence and increment

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This review of the incidence and increment of root caries included 20 longitudinal studies that provided an overall estimate of incidence of 18.25% 1(95%CI; 13.22%-23–28%) and increment of 0.45 (95%CI; 0.37–0.53).

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Oro-antral communications: evidence for treatment approaches insufficient

Maxilla, mandible, upper, lower teeth

Only one small study comparing compared pedicled buccal fat pad and buccal flap for the management of oro-antral communications and fistulae was found for this Cochrane review update of this clinical question.

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Oral lichen planus: Rate of malignant transformation

Lichen_planusWickham's

This review of the malignant transformation rate (TR) of oral lichen planus included 21 observational studies the majority of which were retrospective. The overall estimate of TR was 1.4%.

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Silver diamine fluoride for caries prevention in primary teeth

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Four RCTs were included in this review of silver diamine fluoride (SDF) for the prevention of caries in primary teeth. Meta-analysis involving 2 of the studies suggest a preventive fraction = 77.5% (95%CI; 67.8– 87.2%)

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Toothbrushing: fluoride toothpaste needed to reduce caries

shutterstock_26227375 toothbrushes and toothpaste

Three RCTs were included in this review of the association between personal oral hygiene and coronal dental caries. The findings suggest that in the absence of fluorides personal oral hygiene did not reduce the incidence of caries.

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Crown lengthening – Are outcomes stable?

Anterior_crowns_of_Emax

This review to assess if surgical crown lengthening produces stable clinical outcomes only identified 5 small trials all at high risk of bias

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Oral potentially malignant disorders – how common are they?

Leukoplakia02-04-06

This review of the prevalence of oral potentially malignant disorders included 22 observational studies providing a pooled estimate for prevalence of 4.47% (95% CI;2.43-7.08).

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Fixed orthodontic appliances- which type of archwire first?

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This Cochrane review of the effects of initial arch wires for the alignment of teeth with fixed orthodontic appliances includes 12 RCTs and updates a previous review. The review finds moderate quality evidence shows that archwires of coaxial superelastic nickel-titanium (NiTi) can produce greater tooth movement over 12 weeks than arch wires made of single-strand superelastic NiTi.

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Denture stomatitis: Is there a role for low-level laser therapy?

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This review of low-level laser therapy (LLLT) or photodynamic therapy (PDT) in the treatment of denture stomatitis only identified 4 small RCTs providing limited low quality evidence of clinical effectiveness.

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Dental anxiety in paediatric patients: Is cognitive behavioural therapy effective?

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This review of cognitive behavioural therapy(CBT) for dental anxiety and dental phobia in children identified 6 RCTs suggesting it therapy produces better anxiety reduction than diverse behavioural management techniques. However the available evidence is of low quality.

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