Derek Richards

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Derek Richards is a specialist in dental public health, Director of the Centre for Evidence-Based Dentistry and Specialist Advisor to the Scottish Dental Clinical Effectiveness Programme (SDCEP) Development Team. He is a former editor of the Evidence-Based Dentistry Journal, the chief blogger for the Dental Elf website and a past president of the British Association for the Study of Community Dentistry. He has been involved with a wide range of evidence-based initiatives both nationally and internationally since 1994. Retired from the NHS he is currently a part-time senior lecturer at Dundee Dental School.

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Ventilator-associated pneumonia: Does toothbrushing with chlorhexidine reduce risk?

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This review of the effect of toothbrushing and chlorhexidine on the incidence of ventilator-associated pneumonia (VAP) in patients on mechanical ventilation included 7 RCTs. The findings showed that toothbrushing and chlorhexidine reduced VAP,length of stay and duration of ventilation. However the findings should be interpreted cautiously because of study quality.

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Curcumin as an adjunct to scaling and root planing for chronic periodontitis

Tumeric, curcumin

This review of the effectiveness of oral curcumin products in reducing gingival inflammation and probing pocket depth in adults included 27 RCTs.The findings suggest that curcumin products were as effective as other products. However, a majority of the studies are small and none are at low risk of bias.

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Hypomineralised second primary molars

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This review of the the worldwide prevalence of hypomineralised second primary molars (HPSM) includes 37 studies conducted between 1979 and 2020. The findings indicate a HSPM prevalence worldwide of 6.8% (4.98% to 8.86%).

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Oral lichen planus and malignant transformation

Lichen_planus

This review of high quality studies of oral lichen planus malignant transformation rate included 10 observational studies. The findings found a higher level of malignant transformation in higher quality studies 2.28% (95%CI; 1.49 to 3.20) compared with reviews including lower quality studies 1.14% (0.84 to 1.49).

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Platelet-rich fibrin to reduce post-operative complications of lower third molar removal

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This review of platelet-rich fibrin (PRF) to reducedpostoperative complications following lower third molar surgery included 6 RCTs.
The findings are consistent to other reviews finding that PRF derivative may lead to improvements in postoperative outcomes from third molar surgery but the amount of evidence is limited.

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Microwave disinfection of acrylic dentures

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This review of effect of microwave disinfection on the dimensional stability of denture base acrylic resins included 7 in-vitro studies. A wide range of microwave disinfection protocols were used with the reviewers specifying two protocols that may be safe. However because of the heterogeneity and the small number of studies included these finding should be considered cautiously.

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Atraumatic restorative treatment (ART)

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This review of the survival of atraumatic restorative treatment (ART) in both permanent and primary teeth, when performed in conventional dental clinics and field settings included 34 studies. The findings suggest similar survival rates in both clinica and field settings but the quality of the evidence is low.

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Early enamel caries: Detection and diagnosis

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This comparative analysis of 5 Cochrane caries diagnostic test accuracy studies provides summary estimates for most currently available technologies. However the certainty of the evidence is considered low and it is difficult to predict real world performance.

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Osteonecrosis in bisphosphonate users having dental procedures

osteonecrosis

This review of the the frequency of osteonecrosis of the jaw in bisphosphonate users undergoing dental interventions included 27 studies. having dental procedures of 2.7% (95%CI: 0.9 to 5.2%) being higher in those having dental extractions 4.1% (95%CI: 1.5 to 7.7%).

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Dental implants – post-operative pain management

The authors sought to review available literature relating to SSRI withdrawal syndromes

This review evaluating clinical efficacy of analgesics in mitigating orofacial pain following dental implant surgery included 9 RCTs. While the findings suggest analgesics may be beneficial the number of studies is small an additional infromation is required on which medication,, dosage, dosing schedule, administration route and adverse effects.

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