Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,695 questions · 4,979 findings · 433 reviews

No studies found 998 · 20%GRADE not reported 1,140 · 22.9%Very low 1,024 · 20.6%Low 1,029 · 20.7%Moderate 636 · 12.8%High 152 · 3.1%

Boric acid vs 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 boric acid changes reduction in level of contamination by particles >5 um (droplets) at… compared with water (very low certainty).

2 findings from 1 review

Chlorhexidine 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 chlorhexidine (CHX) changes reduction in level of contamination by particles >5 um (droplets) at… compared with ozonated water (very low certainty).

1 finding from 1 review

Cetylpyridinium chloride (CPC) vs 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

Cetylpyridinium chloride (CPC) may leads to lower reduction in level of contamination by particles >5 um (droplets) at… compared with water (low certainty).

3 findings from 1 review

Periodontal treatment (subgingival instrumentation, with or without antimicrobials/surgery) vs usual care or no treatment

Plaque index (PI) / oral hygiene · People with diabetes mellitus (type 1 or type 2, mostly type 2) and periodontitis, at least 16 years of age

Periodontal treatment (subgingival instrumentation, with or without… led to lower plaque index (PI) / oral hygiene compared with no active intervention/usual care; GRADE not reported.

1 finding from 1 review

Povidone iodine vs Normal saline

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 saline (very low certainty).

1 finding from 1 review

Chlorhexidine vs Normal saline

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 saline; GRADE not reported.

2 findings from 1 review

Essential oil mouthwash vs 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
3 findings from 1 review

Chlorhexidine vs boric acid

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 boric acid (very low certainty).

2 findings from 1 review

Povidone iodine vs Ozonated water

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 povidone iodine changes reduction in level of contamination by particles <=5 um (droplet… compared with ozonated water (very low certainty).

2 findings from 1 review

Chlorhexidine vs povidone‐iodine

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 povidone iodine (very low certainty).

2 findings from 1 review

Chlorhexidine vs Ozonated water

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 ozonated water (very low certainty).

2 findings from 1 review

Summary of findings: Inhaled antibiotics vs IV antibiotics

Need for additional IV or oral antibiotics · adults and children with cystic fibrosis (during acute exacerbations of lung disease)

It is very uncertain whether summary of findings: Inhaled antibiotics changes need for additional IV or oral antibiotics compared with IV antibiotics (very low certainty).

1 finding from 1 review

Adjunctive Coriolus versicolor vs no adjunctive treatment

Adverse events: Oral cavity disorders (includes oral dryness and mucositis)‐ · adults (aged 18+) with colorectal cancer

It is very uncertain whether adjunctive Coriolus versicolor changes adverse events: Oral cavity disorders (includes oral dryness and… compared with no adjunctive treatment (very low certainty).

1 finding from 1 review

Progesterone vs no treatment or placebo (route of progesterone administration)

Clinical pregnancy per woman ‐ oral route · women trying to conceive by intrauterine insemination

It is very uncertain whether progesterone changes clinical pregnancy per woman ‐ oral route compared with no treatment or placebo (route of progesterone administration) (very low certainty).

1 finding from 1 review

Skin care intervention vs standard skin care or no skin care intervention

IgE‐mediated food allergy (oral food challenge) by 1 to 3 years · infants

Skin care intervention showed no clear difference in igE‐mediated food allergy (oral food challenge) by 1 to 3 years compared with standard skin care or no skin care intervention (low certainty).

1 finding from 1 review