Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

348 questions · 568 findings · 47 reviews · Dental caries

No studies found 23 · 4%GRADE not reported 485 · 85.4%Very low 27 · 4.8%Low 31 · 5.5%Moderate 2 · 0.4%High 0 · 0%

Early childhood caries (ECC) vs Caries-free controls

Number of detected salivary bacterial genera · Young children with early childhood caries and caries-free controls

Fewer salivary bacterial genera were reported in the caries-affected group, without a comparative effect estimate or CI.

1 finding from 1 review

Early childhood caries (ECC) vs Caries-free controls

Relative abundance of dominant salivary microbial community (7 genera) · Young children with early childhood caries and caries-free controls

The reported multi-genus community had similar relative abundance in caries-affected and caries-free children, without a comparative effect estimate or CI.

1 finding from 1 review

Early childhood caries (ECC) vs Caries-free controls

Streptococcus mutans and Veillonella spp. levels · Young children with early childhood caries and caries-free controls

Veillonella spp. levels were reported as substantially greater in caries subjects, but the review gave no numerical effect estimate or CI.

1 finding from 1 review

Early childhood caries (ECC) vs NA (within-white-spot-lesion correlation, not a caries vs caries-free comparison)

Correlation of Veillonella spp. with acidogenic streptococci · Young children with early childhood caries and caries-free controls

Veillonella spp. levels were correlated with acidogenic streptococci in white spot lesions (r²=0.38); no CI was reported.

1 finding from 1 review

Severe early childhood caries vs Caries-free controls

Relative abundance of Veillonella spp. · Children under 6 years with severe early childhood caries and caries-free controls

Veillonella spp. mean relative abundance was lower in the S-ECC group; no comparative effect estimate or CI was reported.

1 finding from 1 review

Severe early childhood caries vs Caries-free controls

Relative abundance of S. mutans in saliva · Children under 6 years with severe early childhood caries and caries-free controls

S. mutans median relative abundance was higher in the S-ECC group, without a comparative effect estimate or CI.

1 finding from 1 review

Severe early childhood caries vs Caries-free controls

Streptococcus relative abundance · Children under 6 years with severe early childhood caries and caries-free controls

Streptococcus mean relative abundance was slightly higher in the S-ECC group; no comparative effect estimate or CI was reported.

1 finding from 1 review

Severe early childhood caries vs Caries-free controls

Veillonella spp. and Streptococcus mutans interaction · Children under 6 years with severe early childhood caries and caries-free controls

The study reported a possible role for Veillonella spp. in supporting cariogenic species, without a quantitative effect estimate.

1 finding from 1 review

Severe early childhood caries vs Caries-free controls

Veillonella dispar relative abundance · Children under 6 years with severe early childhood caries and caries-free controls

Veillonella dispar median relative abundance was higher in the S-ECC group, without a comparative effect estimate or CI.

1 finding from 1 review

38% SDF solution (applied biannually) vs 38% SDF solution (applied annually)

Caries arrest · Children with dentine carious lesions (ICDAS 4-5) in primary teeth

Twice-yearly 38% SDF was reported to arrest more caries than once-yearly application (24-month rates 91% vs 79%; ungraded).

1 finding from 1 review

Early childhood caries (ECC) vs Caries-free controls

Iron deficiency (as defined by trialists) · Preschool children (<6 years)

In a sensitivity analysis excluding one outlier study, ECC remained associated with higher odds of iron deficiency (OR 2.76, 95% CI 2.42 to 3.13); ungraded.

2 findings from 1 review

38% SDF + potassium iodide solution (applied annually) vs Tricalcium silicate (TCS) paste (applied twice daily)

Remineralization/arrest of early enamel carious lesions · Patients with early enamel carious lesions on permanent molars

For early enamel lesions, annual SDF+KI was significantly LESS effective than twice-daily tricalcium silicate paste (54.8% vs 100% arrested; p<0.001; ungraded).

1 finding from 1 review

38% SDF + potassium iodide solution (applied annually) vs CPP-ACP

Remineralization/arrest of early enamel carious lesions · Patients with early enamel carious lesions on permanent molars

For early enamel lesions, annual SDF+KI was significantly less effective than twice-daily CPP-ACP (54.8% vs 100% arrested; p<0.001; ungraded).

1 finding from 1 review

Fluoride varnish vs Untreated lesions (single-arm before vs after proportion)

Remineralisation of early enamel caries · Patients (mainly children) with white spot lesions (WSL)

Professionally applied 5% sodium fluoride varnish remineralised about two-thirds of early enamel caries lesions in children (pooled proportion 63.6%, 95% CI 36.0% to 91.2%; 4 studies); certainty was not GRADE-rated and heterogeneity was very high (I2=96%).

1 finding from 1 review

Fluoride varnish vs No fluoride treatment

Dimensional change (size) of early enamel caries lesions · Patients (mainly children) with white spot lesions (WSL)

In one trial, professionally applied sodium fluoride varnish significantly reduced the size of early enamel caries lesions compared with no fluoride treatment; ungraded.

1 finding from 1 review

1.23% APF gel vs Not specified

Remineralisation of early enamel caries · Children with early (incipient) enamel caries

One trial found acidulated phosphate fluoride gel did not remineralise early enamel caries; ungraded.

1 finding from 1 review