Table 1.

Comparison of mean TAS according to age group.

Age	Photograph Gender	Fluorosis				P-value
		Present		Absent
		N	Mean TAS ±SD	N	Mean TAS ±SD
12–13	Boy	55	24.47 ± 4.82	73	33.91 ± 5.82	<0.001
	Girl	55	27.38 ± 4.17	73	35.59 ± 4.80	<0.001
14–15	Boy	156	24.47 ± 4.66	153	33.66 ± 4.60	<0.001
	Girl	156	27.30 ± 4.39	153	35.98 ± 4.21	<0.001