Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,890 questions · 3,917 findings · 272 reviews · Oral Health

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%

Autopolymerised sealant vs Light polymerised sealant

Retention of sealant (complete or partial retention) · Children with sound primary molars, aged 2-4 years (municipal dental clinics or hospital paediatric clinics, Denmark)

It is very uncertain whether autopolymerised sealant changes retention of sealant (complete or partial retention) compared with light polymerised sealant (very low certainty).

1 finding from 1 review

Fluoride-releasing resin-based sealant vs No sealant (control/no treatment)

Retention of sealant (complete or partial retention) · Children with caries-free or non-cavitated carious lesion primary molars, aged 3-7 years (paediatric department, dental hospital, France)
1 finding from 1 review
  • Sealants for preventing dental caries in primary teeth 2022 · Cochrane All outcomes
    12-24 months
    At 12 months, sealants on 96 (70.1%) surfaces completely retained, 25 (18.3%) partially retained, 16 (11.6%) completely lost; at 24 months, 58 (45.3%) completely retained, 29 (22.7%) partially retained, 41 (32%)…
    1 study
    GRADE not reported

Fluoride-free nano-/micro-hydroxyapatite (nHA) dentifrice vs Control (regular fluoride) dentifrice

Caries lesion initiation/progression (ICDAS score, laser fluorescence/DIAGNOdent, photographic pixels, enamel acid resistance) · Patients (children and adults, age 3-40 years) with initial enamel caries lesions (non-orthodontic and orthodontic)

No meta-analysis was possible for the 5 in vivo RCTs (high heterogeneity); narratively nHA showed generally no significant difference versus fluoridated dentifrice, and the evidence was not graded (ungraded).

1 finding from 1 review
  • Efficacy of nano-hydroxyapatite on caries prevention-a systematic review and meta-analysis. 2022 All outcomes
    Median follow-up 6 months (range 6-12 months) · In vivo (clinical); non-orthodontic and orthodontic patients
    No meta-analysis was performed for the in vivo studies owing to high heterogeneity (population, control group, outcomes, follow-up periods, risk of bias) and differing statistical designs (e.g., non-inferiority);…
    5 studies · 420 participants
    GRADE not reported

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

Glass ionomer-based sealant vs Resin-based sealant

Development of >=1 new carious lesion (caries incidence) · 'Healthy' children with caries-free second primary molars, aged 3-5 years (schools and kindergartens, India and China)
1 finding from 1 review
  • Sealants for preventing dental caries in primary teeth 2022 · Cochrane All outcomes
    6-24 months
    N/A - insufficient quantitative information available; 200 (2 studies). Comments: Due to the methods of data collection, analysis and reporting we were unable to provide any quantitative estimates. Fei 2011 narrative:…
    2 studies · 200 participants
    Very low

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

Fluoride-releasing resin-based sealant vs Resin-based sealant

Development of >=1 new carious lesion (caries incidence) · Children with caries-free second primary molars, aged 4-8 years (dental clinic, Turkey and Spain)
1 finding from 1 review
  • Sealants for preventing dental caries in primary teeth 2022 · Cochrane All outcomes
    6-24 months
    N/A - insufficient quantitative information available; 69 (2 studies). Comments: Due to the different sealant materials, data reporting (split-mouth studies reported as parallel-group) and the very low number of tooth…
    2 studies · 69 participants
    Low

Dental caries vs Caries-free status

KEGG pathway associations · Participants in oral 16S rRNA caries microbiome studies

Phosphonate and phosphinate metabolism and glyoxylate and dicarboxylate metabolism had the lowest reported adjusted P values (0.04); no pooled effect estimate was reported.

1 finding from 1 review

Fluoride-free nano-hydroxyapatite (nHA) dentifrice/paste vs Sodium fluoride (control) toothpaste

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

Under demineralizing conditions, nHA allowed significantly more enamel demineralization than NaF (MD 1625, 95% CI 553 to 2697; 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

Autopolymerised sealant vs Light polymerised sealant

Development of >=1 new carious lesion (caries incidence) · Children with sound primary molars, aged 2-4 years (municipal dental clinics or hospital paediatric clinics, Denmark)

It is very uncertain whether autopolymerised sealant changes development of >=1 new carious lesion (caries incidence) compared with light polymerised sealant (very low certainty).

1 finding from 1 review

Tempered chlorhexidine vs Non-tempered chlorhexidine

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 chlorhexidine changes reduction in level of contamination by particles >5 um (droplets) at… compared with non-tempered chlorhexidine (very low certainty).

3 findings from 1 review

Periodontal treatment: scaling and root planing (SRP) plus advice vs Community care: advice only

Adverse events due to periodontal therapy · Patients with cardiovascular disease and chronic periodontitis
1 finding from 1 review