Findings

What do systematic reviews say?

3 questions · 5 findings · 1 reviews · Dental caries

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No studies found 0 · 0%GRADE not reported 5 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

External control of fluoride concentration vs Not applicable

Water samples with fluoride concentration outside the acceptable range · Brazilian cities with artificially fluoridated public water supplies

After excluding Silva et al., the pooled prevalence outside the acceptable range was 47.1%.

1 finding from 1 review

External control of fluoridation in the public water supplies of Brazilian cities as a strategy against caries: a… 2021 All outcomes
1995-2013 · Brazil · Sensitivity analysis excluding Silva et al.
Prevalence 47.1 [39.6, 54.7]
11 studies
GRADE not reported

Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis)

Water samples with fluoride concentration outside the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control)

In Brazilian cities using external control, more than half of artificially fluoridated public water supply samples (pooled 56.6%, 95% CI 45.5 to 67.3) had fluoride concentrations outside the acceptable range, with very high heterogeneity (I2=99.5%); ungraded.

3 findings from 1 review

External control of fluoridation in the public water supplies of Brazilian cities as a strategy against caries: a… 2021 All outcomes
Public water supply / water treatment stations in Brazilian cities (external control of artificial fluoridation)
Prevalence 56.6 [45.5, 67.3]
12 studies
GRADE not reported
External control of fluoridation in the public water supplies of Brazilian cities as a strategy against caries: a… 2021 All outcomes
Public water supply / water treatment stations in Brazilian cities (external control of artificial fluoridation) · Region: Southeast Brazil
Prevalence 42.4 [30.9, 54.4]
Studies not reported
GRADE not reported
External control of fluoridation in the public water supplies of Brazilian cities as a strategy against caries: a… 2021 All outcomes
Public water supply / water treatment stations in Brazilian cities (external control of artificial fluoridation) · Region: Northeast Brazil
Prevalence 81.1 [65.3, 92.9]
Studies not reported
GRADE not reported

Intervention not reported

Water samples with fluoride concentration outside the acceptable range

1 finding from 1 review

External control of fluoridation in the public water supplies of Brazilian cities as a strategy against caries: a… 2021 All outcomes
Region: South Brazil
Prevalence 50.7 [40.7, 60.6]
Studies not reported
GRADE not reported