Findings

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Evidence found and GRADE certainty

4,315 questions · 23,557 findings · 2,311 reviews

No studies found 4,183 · 17.8%GRADE not reported 3,930 · 16.7%Very low 5,371 · 22.8%Low 5,787 · 24.6%Moderate 3,320 · 14.1%High 966 · 4.1%

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Fluoride varnish vs Placebo varnish, resin sealant, or standard care (oral hygiene instructions)

White spot lesion clinical score (mean values), subject level · Healthy adolescents and adults undergoing orthodontic treatment with fixed multi-bracket appliances

In a pooled analysis of two placebo-controlled trials, fluoride varnish also reduced white spot lesion clinical scores (pooled SMD -0.44, 95% CI -0.64 to -0.24); this secondary outcome was not separately GRADE-rated.

1 finding from 1 review

Outer carious dentin (by lesion depth/location) vs Inner carious dentin

MMP-9 location/depth · Human ex vivo carious dentin

No clear direction of MMP-9 expression by lesion depth/location was found; the evidence is very uncertain (very low certainty).

1 finding from 1 review

Mutans streptococci detected in plaque or saliva at baseline vs No mutans streptococci detected in plaque or saliva at baseline

Development of any (cavitated or non-cavitated) carious lesion · Children younger than 6 years with caries-free primary dentition (no cavitated or non-cavitated lesions at baseline)

Across the sample-based sensitivity analysis, mutans streptococci at baseline were associated with higher odds of developing caries.

1 finding from 1 review

Resin-based fissure sealant vs Fluoride varnish

DMFS (decayed, missing, filled surfaces) increment, occlusal surfaces · Schoolchildren aged 6-12 years with sound occlusal surfaces of the first permanent molars

Pit and fissure sealant and fluoride varnish showed no statistically significant difference in DMFS increment at 24 months (SMD -0.13, 95% CI -0.67 to 0.40; I2=92%; not GRADE-rated).

1 finding from 1 review

Chlorhexidine vs Essential oils/herbal mouthwash

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

Chlorhexidine (CHX) led to lower reduction in level of contamination by particles >5 um (droplets) at… compared with essential oils/herbal mouthwash; GRADE not reported.

2 findings from 1 review

Essential oil mouthwash vs Coloured and flavoured 5% hydroalcohol mouthwash

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them
1 finding from 1 review

Povidone iodine vs Ozonated water

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

It is very uncertain whether povidone iodine changes reduction in level of contamination by particles >5 um (droplets) at… compared with ozonated water (very low certainty).

1 finding from 1 review

Chlorhexidine vs Cetylpyridinium chloride (CPC)

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

It is very uncertain whether chlorhexidine (CHX) changes reduction in level of contamination by particles >5 um (droplets) at… compared with cetylpyridinium chloride (CPC) (very low certainty).

5 findings from 1 review
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Nano-hydroxyapatite (nHA) dentifrice/paste (fluoride-free or fluoridated) vs nHA-free / fluoride-free (negative) control

Mineral loss (transversal microradiography) · Enamel/dentin specimens with initial caries lesions (or sound surfaces) in intraoral (in situ) appliances worn by patients

Under remineralizing conditions, nHA produced significantly more remineralization than the negative control (MD 350, 95% CI 179 to 521; very low certainty).

1 finding from 1 review

Chlorhexidine vs Water (distilled)

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them
3 findings from 1 review

Cetylpyridinium chloride (CPC) vs No rinsing

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

It is very uncertain whether cetylpyridinium chloride (CPC) changes reduction in level of contamination by particles >5 um (droplets) at… compared with no rinsing (very low certainty).

3 findings from 1 review

Chlorhexidine vs povidone‐iodine

Reduction in level of contamination by particles <=5 um (droplet nuclei) at >=2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

It is very uncertain whether chlorhexidine (CHX) changes reduction in level of contamination by particles <=5 um (droplet… compared with povidone iodine (very low certainty).

2 findings from 1 review

Dental caries (carious oral microbiome) vs Caries-free / healthy oral microbiome

Alpha diversity (Chao1, Observed, Shannon) · Adults providing oral (saliva/supragingival plaque) 16S rRNA microbiome samples

In adults, caries-vs-health alpha diversity differed for the Shannon index but not Chao1/Observed (ungraded).

1 finding from 1 review

Tempered cetylpyridinium chloride vs Cold cetylpyridinium chloride

Reduction in level of contamination by particles >5 um (droplets) at <2 m from patient's oral cavity · Dental patients undergoing aerosol-generating procedures (AGPs) and the dental healthcare providers treating them

It is very uncertain whether tempered cetylpyridinium chloride changes reduction in level of contamination by particles >5 um (droplets) at… compared with cold cetylpyridinium chloride (very low certainty).

2 findings from 1 review

Glass ionomer-based sealant vs No sealant (control/no treatment)

Development of >=1 new carious lesion (caries incidence) · Children with caries-free primary first molars (with or without caries on other teeth), aged 1-5 years (paediatric clinic/dental school,…

Glass ionomer-based sealant may leads to lower development of >=1 new carious lesion (caries incidence) compared with no sealant (low certainty).

2 findings from 1 review