Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

828 questions · 1,477 findings · 103 reviews

No studies found 5 · 0.3%GRADE not reported 1,402 · 94.9%Very low 38 · 2.6%Low 20 · 1.4%Moderate 11 · 0.7%High 1 · 0.1%

Caries assessment at dentine threshold (cavitation into dentine) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Dental caries prevalence · European adolescents aged 12–19 years

Caries prevalence at the dentine threshold was about 56% (pooled 0.56, 95% CI 0.43 to 0.68; 15 studies; not GRADE-rated).

7 findings from 1 review
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Enamel caries quantification (DeS/DeT within total D(M)FS/D(M)FT) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Enamel caries proportion · European adolescents aged 12–19 years

Enamel caries made up about half of total caries experience (pooled proportion 0.50, 95% CI 0.39 to 0.65; 7 studies; higher in 12–15 than 16–19-year-olds; not GRADE-rated).

3 findings from 1 review

Caries experience measurement (mean D(M)FS, enamel lesions included) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Dental caries · European adolescents aged 12–19 years

Mean caries experience (DMFS) in subgroup 'Examination type: full-mouth' was 6.56 (95% CI 4.55 to 9.47; 12 studies).

11 findings from 1 review
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Caries distribution assessment (individual, tooth and surface levels) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Caries distribution (individual/tooth/surface level) · European adolescents aged 12–19 years

Caries distribution was skewed at individual, tooth and surface levels and too heterogeneous to meta-analyze (narrative synthesis of 11 studies; not GRADE-rated).

1 finding from 1 review

Caries assessment at enamel threshold vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Dental caries prevalence · European adolescents aged 12–19 years

Enamel-threshold caries prevalence in subgroup 'Region: non-Scandinavian' was 0.74 (95% CI 0.53 to 0.96; 11 studies).

11 findings from 1 review
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Caries severity measurement (mean number of decayed, missing and filled permanent teeth, DMFT; WHO criteria) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Dental caries · 12-year-old children (permanent dentition) in Africa

Pooled mean DMFT in Sudan was 0.49 (95% CI 0.461 to 0.519; 1 article(s); not GRADE-rated).

22 findings from 1 review
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Oral-health promotion programs (OHPPs): community-based oral-health education/training, supervised toothbrushing with fluoride toothpaste and topical fluoride, dental screening, and dietary advice vs No oral-health promotion program, or a differing (usual-care) action under similar conditions

Incremental cost‐effectiveness · Children younger than 6 years (healthy except for dental caries)

In children younger than 6 years, OHPPs were associated with lower cost per DMFT/S (OR 0.07, 95% CI 0.02 to 0.32; ungraded).

1 finding from 1 review