Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,692 questions · 2,586 findings · 180 reviews · Dental caries

No studies found 194 · 7.5%GRADE not reported 1,937 · 74.9%Very low 248 · 9.6%Low 136 · 5.3%Moderate 52 · 2%High 19 · 0.7%

Socioeconomic status category vs Not applicable (single-group prevalence)

Low SES prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 36% of children with caries in LMICs were of low SES (pooled prevalence 0.359, 95% CI 0.167 to 0.578; 4 studies; not GRADE-rated).

1 finding from 1 review

Dental caries assessment (WHO/clinical diagnostic criteria; caries = DMFT>0) vs None (descriptive prevalence; random-effects pooled proportion)

Dental caries prevalence · Children (deciduous and/or permanent dentition) in low- and middle-income countries

About 39% of children in LMICs had dental caries (pooled prevalence 0.387, 95% CI 0.284 to 0.495; 11 studies; very high heterogeneity I2=99%; not GRADE-rated).

1 finding from 1 review

Maternal education attainment vs Not applicable (single-group prevalence)

No formal maternal education prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 10% of children with caries in LMICs had mothers with no formal education (pooled prevalence 0.101, 95% CI 0.033 to 0.201; 3 studies; not GRADE-rated).

1 finding from 1 review

Maternal education attainment vs Not applicable (single-group prevalence)

Primary maternal education prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 42% of children with caries in LMICs had mothers with primary education (pooled prevalence 0.425, 95% CI 0.280 to 0.576; 7 studies; not GRADE-rated).

1 finding from 1 review

Good brushing habits (>=2 daily tooth brushing) vs Not applicable (single-group prevalence)

Good brushing habits prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 57% of children with caries in LMICs had good brushing habits (pooled prevalence 0.569, 95% CI 0.354 to 0.771; 7 studies; very high heterogeneity; not GRADE-rated).

1 finding from 1 review

Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction

Post-Streptococcus mutans prediction accuracy · Dental images of human beings

The review reported 99% accuracy for post-Streptococcus mutans prediction in Javed et al. (Ungraded).

1 finding from 1 review

Maternal education attainment vs Not applicable (single-group prevalence)

Secondary/higher maternal education prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 45% of children with caries in LMICs had mothers with secondary or higher education (pooled prevalence 0.450, 95% CI 0.330 to 0.572; 7 studies; not GRADE-rated).

1 finding from 1 review

Access to dental care / health services vs Not applicable (single-group prevalence)

Access to/visited dental services prevalence · Children (deciduous and/or permanent dentition) in low- and middle-income countries

About 44% of children in LMICs had access to or had visited dental services (pooled prevalence 0.444, 95% CI 0.277 to 0.618; 5 studies; not GRADE-rated).

1 finding from 1 review

Socioeconomic status category vs Not applicable (single-group prevalence)

Middle SES prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 35% of children with caries in LMICs were of middle SES (pooled prevalence 0.353, 95% CI 0.180 to 0.550; 7 studies; not GRADE-rated).

1 finding from 1 review

Socioeconomic status category vs Not applicable (single-group prevalence)

High SES prevalence (among children with caries) · Children with dental caries (deciduous and/or permanent dentition) in low- and middle-income countries

About 25% of children with caries in LMICs were of high SES (pooled prevalence 0.245, 95% CI 0.162 to 0.339; 5 studies; not GRADE-rated).

1 finding from 1 review

Private day care vs Public day care

Dental caries prevalence · Preschool children in Sharjah day cares

Caries prevalence was 77% in private day cares versus 22% in public day cares.

2 findings from 1 review

Molar-incisor hypomineralisation (MIH) assessment vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

MIH prevalence · School-aged children in the United Arab Emirates (Dubai)

MIH prevalence among school-aged children in Dubai ranged from 7.6% to 27.2% across two studies, higher in females and low-socioeconomic-class schools (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Visual or visual-tactile classification systems (any system: ICDAS, ERK, Nyvad, Downer, Lussi, UniViSS, or unspecified) vs Reference standard (histology, excavation, radiographs/microCT, or tooth separation)

Diagnostic accuracy in previously restored teeth (secondary caries) · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…
1 finding from 1 review
  • Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries 2021 · Cochrane All outcomes
    Up to 3 months between index test and reference standard (in vivo studies) · Previously restored teeth (secondary caries)
    Only one study (Kim 2017) intentionally included restored teeth in its sample; the pre-specified secondary-caries subgroup analysis could not be performed, no summary estimate reported.
    1 study
    GRADE not reported

Dental fluorosis assessment vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Dental fluorosis prevalence · School-aged children in the United Arab Emirates (Dubai)

One study reported dental fluorosis in 10.9% of school-aged children in Dubai, mostly very mild or mild (narrative synthesis; not GRADE-rated).

1 finding from 1 review