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Table 2 BPA levels in urine

From: Association between polymorphisms in genes encoding estrogen receptors (ESR1 and ESR2) and excreted bisphenol A levels after orthodontic bracket bonding: a preliminary study

 

Minimum

Maximum

Mean (SD)

BPA levels in the urine (ng g−1)

 Before bracket bonding (T0)

0.9

3.8

2.21 (0.99)a

 24 h after bracket bonding (T1)

1.2

10.7

5.27 (2.62)b

 1 week after bracket bonding (T2)

1.5

9.6

4.41 (2.14)b

Increases in BPA levels in the urine (ng g−1)

 Increases at 24 h (T1–T0)

0.3

8.1

3.06 (2.2)

 Increases at 1 week (T2–T0)

0.3

6.8

2.21 (1.8)

  1. Same letters indicate no statistically significant difference