Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,890 questions · 3,917 findings · 272 reviews · All outcomes

No studies found 429 · 11%GRADE not reported 2,657 · 67.8%Very low 512 · 13.1%Low 219 · 5.6%Moderate 80 · 2%High 20 · 0.5%

Resin-based fissure sealant vs Fluoride varnish

Safety of sealants and fluoride varnishes (adverse events) · Children and adolescents (general population, aged under 20 years)
1 finding from 1 review

General ventilation (e.g. natural ventilation, exhaust fans, opening windows) vs No general ventilation / standard operatory

Outcome not reported · Dental healthcare providers (dentist, dental surgery assistant, dental hygienist, dental technologist, dental laboratory staff, dental…

The review found no eligible studies for this question.

1 finding from 1 review

Resin-based fissure sealant vs Fluoride varnish

Time taken to apply pit and fissure sealant or fluoride varnish · Children and adolescents (general population, aged under 20 years)

The review found no eligible studies for this question.

1 finding from 1 review

High-volume evacuation (HVE) vs No HVE

Reduction in contamination of aerosols on operator's face shield/mask (RCTs) · People undergoing aerosol-generating procedures (AGPs) in a dental setting

High-volume evacuation (HVE) showed no clear difference in reduction in contamination of aerosols on operator's face… compared with no HVE; GRADE not reported.

1 finding from 1 review

Resin-modified glass ionomer fissure sealant vs Fluoride varnish

Progression of dentinal carious lesions into enamel or dentine · Children and adolescents (general population, aged under 20 years)

Resin-modified glass ionomer fissure sealant showed no clear difference in progression of dentinal carious lesions into enamel or dentine compared with fluoride varnish; GRADE not reported.

1 finding from 1 review

Rubber dam vs No rubber dam

Reduction in level of contamination in aerosols (CFU) during restorative procedures at operator's submental region (RCT) · People undergoing aerosol-generating procedures (AGPs) in a dental setting

Rubber dam showed no clear difference in reduction in level of contamination in aerosols (CFU) during… compared with no rubber dam; GRADE not reported.

1 finding from 1 review

Fluoride varnish vs Fissure sealant (resin-based or glass ionomer)

Caries incidence of first permanent molars (FPMs) · Generally healthy children aged 6 to 9 years with at least one fully erupted first permanent molar with deep fissures or early enamel…

After excluding the high-risk-of-bias study (Bravo 1996), fluoride varnish and fissure sealant did not differ in caries incidence of FPMs and heterogeneity fell to 0% (RR 1.05, 95% CI 0.91 to 1.22; 5 RCTs; ungraded).

3 findings from 1 review

Any method, procedure or policy to reduce contaminated aerosols in dental clinics vs Any other method, no treatment or combination of methods

Cost of the intervention · Dental healthcare providers (dentist, dental surgery assistant, dental hygienist, dental technologist, dental laboratory staff, dental…

The review found no eligible studies for this question.

1 finding from 1 review

Rubber dam vs No rubber dam

Reduction in level of contamination in aerosols (CFU) during restorative procedures at operator's occiput (RCT) · People undergoing aerosol-generating procedures (AGPs) in a dental setting

It is very uncertain whether rubber dam changes reduction in level of contamination in aerosols (CFU) during… compared with no rubber dam (very low certainty).

1 finding from 1 review

Rubber dam vs No rubber dam

Reduction in level of contamination in aerosols (CFU) during restorative procedures at 2 metres from mouth (CCT) · People undergoing aerosol-generating procedures (AGPs) in a dental setting

It is very uncertain whether rubber dam changes reduction in level of contamination in aerosols (CFU) during… compared with no rubber dam (very low certainty).

2 findings from 1 review

Fluoride varnish vs Fissure sealant (resin-based or glass ionomer)

Caries incidence (proportion of enrolled children developing dentin caries, ICDAS 4-6) · Generally healthy children aged 6 to 9 years with at least one fully erupted first permanent molar with deep fissures or early enamel…

Fluoride varnish and fissure sealant did not differ significantly in the proportion of children developing caries at 2 to 3 years (RR 1.12, 95% CI 0.60 to 2.09; 2 RCTs; ungraded).

1 finding from 1 review

Chlorhexidine (mouthrinse or gel), as part of oral hygiene care vs placebo or usual care

Incidence of VAP · Critically ill patients (adults and children) receiving mechanical ventilation in ICU

Chlorhexidine (mouthrinse or gel), as part of oral hygiene care probably leads to lower incidence of VAP compared with placebo or usual care (moderate certainty).

1 finding from 1 review