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Table 2 Concentrations of fluoride in maternal urine, serum, and amniotic fluid by community water fluoridation concentration

From: Maternal and fetal exposures to fluoride during mid-gestation among pregnant women in northern California

 

Fluoridation below recommended concentrations(< 0.7 mg/L)

Fluoridation in accordance with federal recommendations (> = 0.7 mg/L)

N

24

24

Fluoride concentrations

Mean ± SD

Min, Max

Mean ± SD

 

Min, Max

Community water

0.20 ± 0.18

0.02, 0.60

0.80 ± 0.092

*

0.69, 1.00

Maternal urine

0.52 ± 0.28

0.12, 1.25

0.74 ± 0.44

*

0.060, 1.70

Maternal urine adjusted for specific gravity

0.57± 0.35

0.17, 1.63

0.69 ± 0.34#

 

0.073, 1.66

Maternal serum

0.011 ± 0.0086

0.0040, 0.040

0.021 ± 0.015

*

0.0038, 0.059

Amniotic fluid

0.013 ± 0.0052

0.0061, 0.023

0.021 ± 0.014#

*

0.0063, 0.058

  1. *The high fluoridation mean concentration is significantly different from the low fluoridation mean concentration at the 0.05 concentration using Welch’s t-test
  2. #N = 23
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Environmental Health

ISSN: 1476-069X