What do systematic reviews say?

Outcome not reported · Residents of nursing homes and other long-term care facilities

Adverse events such as transient discolouration, altered taste, allergic reaction, hypersensitivity · People undergoing aerosol-generating procedures (AGPs) in a dental setting

Incidence of infection of dental healthcare providers · People undergoing aerosol-generating procedures (AGPs) in a dental setting

All CVD-related death · Patients with cardiovascular disease and chronic periodontitis

Tooth loss · Adults with a clinical diagnosis of (chronic) periodontitis (1999 classification); studies of aggressive periodontitis, systemic disorders…

Adverse events · Children with caries-free primary first molars (with or without caries on other teeth), aged 1-5 years (paediatric clinic/dental school,…

Additional physical symptoms · People aged 12 years and over with painful TMD lasting 3 months or longer

Quality of life · People aged 12 years and over with painful TMD lasting 3 months or longer

Progression of non-cavitated enamel caries · Children with caries-free second primary molars, aged 4-8 years (dental clinic, Turkey and Spain)

Gingivitis · School children (aged 4 to 15 years), primary and secondary schools in the UK and India

Adverse events · Children with sound primary molars, aged 2-4 years (municipal dental clinics or hospital paediatric clinics, Denmark)

Adverse events · Children who were regular dental attenders with caries-free first or second primary molars (public health service clinic, Brazil)

Mortality or serious adverse events requiring hospital admission · Adults or children at increased risk of bacterial endocarditis (pre-existing cardiac condition) undergoing an invasive dental procedure

Adverse events · Children with caries-free or non-cavitated carious lesion primary molars, aged 3-7 years (paediatric department, dental hospital, France)

Progression of non-cavitated enamel caries · Children who were regular dental attenders with caries-free first or second primary molars (public health service clinic, Brazil)

All‐cause death · Patients with cardiovascular disease and chronic periodontitis

Change of microbiota in the patient's mouth · People undergoing aerosol-generating procedures (AGPs) in a dental setting

Acceptability and feasibility of the intervention to patients and dental healthcare providers · People undergoing aerosol-generating procedures (AGPs) in a dental setting

Malocclusion or orthodontic treatment needs measured by any validated index · School children (aged 4 to 15 years), primary and secondary schools in the UK and India

Proportion of children with other untreated oral health needs · School children (aged 4 to 15 years), primary and secondary schools in the UK and India