Association between Urine Fluoride and Dental Fluorosis as a Toxicity Factor in a Rural Community in the State of San Luis Potosi

Table 1

Sample in number and percentage for groups of age and mean of dental fluorosis using TF index.

	Male	Female
Ages 6-7
Number	18	17
Percentage	51.4	48.6
TF (95% CI)	5.5 (4.95–6.0)	5.94 (5.33–6.56)
Ages 8–10
Number	17	20
Percentage	45.95	54.1
TF (95% CI)	6.59 (5.9–7.3)	7.0 (6.5–7.5)
Ages 11-12
Number	23	16
Percentage	58.97	41.03
TF (95% CI)	7.04 (6.48–7.6)	7.0 (6.2–7.8)

TF: Thylstrup-Fejerskov index.
CI: confidence interval.