Table 1.

Distribution of dental fluorosis among different age groups

Dental fluorosis
Age (years)	Normal	Questionable	Very mild	Mild	Moderate	Severe	Exclude
15-25	15	5	3	2	0	0	0
26-35	55	25	5	5	10	0	0
36-45	5	10	15	0	3	2	0
46-55	15	5	10	14	0	0	1
56-65	8	2	3	0	0	2	0
Total	98	47	36	21	13	4	1