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. 2010 Jun 9;2010:597251. doi: 10.1155/2010/597251

(c)

Fluorosis dmft/DMFT > 0 dmft/DMFT = 0 OR CI95% P-value
n (%) n (%)
 No sign or Uncertain 11 (18.0) 50 (82.0) 0.2 0.1–0.4 <.05
 Very slight 44 (12.8) 299 (87.2) 0.2 0.1-0.2
 Slight 40 (18.8) 173 (81.2) 0.2 0.2-0.3
 Moderate or Severe 19 (26.4) 53 (73.6) 0.4 0.2–0.6