Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

582 questions · 642 findings · 67 reviews · Oral Health

No studies found 173 · 26.9%GRADE not reported 298 · 46.4%Very low 121 · 18.8%Low 35 · 5.5%Moderate 15 · 2.3%High 0 · 0%

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to the patient or HCW before and/or after an AGP vs No treatment or saline or water

Anosmia (or disturbance in sense of smell) · Patients without suspected or confirmed COVID-19 infection undergoing aerosol-generating procedures (AGPs), and the healthcare workers…

The review found no eligible studies for this question.

1 finding from 1 review

Resin-based fissure sealant plus fluoride varnish vs Fluoride varnish

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

The review found no eligible studies for this question.

1 finding from 1 review

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to the patient or HCW before and/or after an AGP vs No treatment or saline or water

Incidence of symptomatic or test-positive COVID-19 infection in HCWs or patients · Patients without suspected or confirmed COVID-19 infection undergoing aerosol-generating procedures (AGPs), and the healthcare workers…

The review found no eligible studies for this question.

1 finding from 1 review

Antimicrobial mouthwash and/or nasal spray (alone or in combination), any concentration, frequency or dosage vs No treatment or saline or water

Other adverse events (allergy, irritation/burning of nasal, oral or oropharyngeal mucosa, long-term staining of mucous membranes or teeth, accidental ingestion) · Patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

Changes in microbiome in oral cavity, nasal cavity, oro- or nasopharynx · Healthcare workers (HCWs) treating patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Antimicrobial mouthwash and/or nasal spray (alone or in combination), any concentration, frequency or dosage vs No treatment or saline or water

Incidence of symptomatic or test-positive COVID-19 infection in HCWs · Patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Resin-based fissure sealant plus fluoride varnish vs Fluoride varnish

Time taken to apply pit and fissure sealant or fluoride varnish · Children and adolescents (general population, aged under 20 years)
1 finding from 1 review

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

Incidence of symptomatic or test-positive COVID-19 infection in HCWs · Healthcare workers (HCWs) treating patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Resin-based fissure sealant plus fluoride varnish vs Fluoride varnish

Changes in decayed, missing and filled (DMF) figures at whole-mouth level · Children and adolescents (general population, aged under 20 years)
1 finding from 1 review

Antimicrobial mouthwash and/or nasal spray (alone or in combination), any concentration, frequency or dosage vs No treatment or saline or water

Anosmia (or disturbance in sense of smell) · Patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Antimicrobial mouthwash and/or nasal spray (alone or in combination), any concentration, frequency or dosage vs No treatment or saline or water

Change in viral load · Patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Antimicrobial mouthwash and/or nasal spray (alone or in combination), any concentration, frequency or dosage vs No treatment or saline or water

RECOVERY trial outcomes (mortality; hospitalisation status; use of ventilation; use of renal dialysis or haemofiltration) · Patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Resin-based fissure sealant (visible-light-polymerized) vs Fluoride varnish

Incidence of dentinal carious lesion on treated occlusal surfaces of molars or premolars (yes/no) · Children and adolescents (general population, aged under 20 years)

It is very uncertain whether resin-based fissure sealant (visible-light-polymerized) changes incidence of dentinal carious lesion on treated occlusal surfaces of… compared with fluoride varnish (very low certainty).

2 findings from 1 review

Any antimicrobial mouthwash and/or nasal spray (alone or in combination), at any concentration, delivered to healthcare workers, with or without the same intervention given to the patients with COVID-19 vs No treatment or saline or water

Other adverse events (allergy, irritation/burning of nasal, oral or oropharyngeal mucosa, long-term staining of mucous membranes or teeth, accidental ingestion) · Healthcare workers (HCWs) treating patients with suspected or confirmed COVID-19 infection

The review found no eligible studies for this question.

1 finding from 1 review

Resin-modified glass ionomer fissure sealant plus oral health education vs Fluoride varnish plus oral health education

Change in DMF increment on occlusal surfaces of first permanent molars · Children and adolescents (general population, aged under 20 years)

Resin-modified glass ionomer fissure sealant plus oral health… showed no clear difference in change in DMF increment on occlusal surfaces of first permanent molars compared with fluoride varnish plus oral health education; GRADE not reported.

2 findings from 1 review

Resin-based fissure sealant vs Fluoride varnish

Change in DMFT (decayed, missing and filled permanent teeth) increment · Children and adolescents (general population, aged under 20 years)

Resin-based fissure sealant led to lower change in DMFT (decayed, missing and filled permanent teeth) increment compared with fluoride varnish; GRADE not reported.

1 finding from 1 review

Resin-based fissure sealant vs Fluoride varnish

Number of visits to the dentist for repair of sealant or fluoride varnish application · Children and adolescents (general population, aged under 20 years)

Resin-based fissure sealant led to higher number of visits to the dentist for repair of sealant or fluoride… compared with fluoride varnish; GRADE not reported.

1 finding from 1 review

Glass ionomer or resin-modified glass ionomer fissure sealant vs Fluoride varnish

Dentine caries in permanent molars (24 months) · Children and adolescents (general population, aged under 20 years)
1 finding from 1 review

Resin-based fissure sealant plus fluoride varnish vs Fluoride varnish

Dentine caries in permanent molars (24 months) · Children and adolescents (general population, aged under 20 years)

It is very uncertain whether resin-based fissure sealant plus fluoride varnish changes dentine caries in permanent molars (yes/no) compared with fluoride varnish alone (very low certainty).

1 finding from 1 review

Resin-based fissure sealant vs Fluoride varnish

Change in DMFS (decayed, missing and filled permanent surfaces) increment · Children and adolescents (general population, aged under 20 years)

Resin-based fissure sealant led to lower change in DMFS (decayed, missing and filled permanent surfaces)… compared with fluoride varnish; GRADE not reported.

1 finding from 1 review