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. 2009 Aug 26;2(2):25–31. doi: 10.5005/jp-journals-10005-1026

TABLE 3: Mean DMFT according to age group and grades of fluorosis

Grades of fluorosis Group I Group II Group III Group IV Group V Group VI
No.   DMFT   Mean   No.   DMFT   Mean   No.   DMFT   Mean   No.   DMFT   Mean   No.   DMFT   Mean   No.   DMFT   Mean
Grade 1 18   15   0.83   17   19   1.11   20   10   0.5   13   13   1   23   14   0.6   23   32   1.45
Grade 2 27   30   1.11   31   47   1.11   25   31   1.24   20   35   1.75   75   128   1.70   49   116   2.36
Grade 3 5   9   1.8   8   16   2   16   31   1.93   8   23   2.87   26   57   2.19   27   86   3.18
Grade 4 1   4   4   2   7   3.5   4   13   3.25   3   7   2.33   5   26   5.2   5   21   4.2
Grade 5 1   1   1   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
Total 52   59   8.74   58   89   8.12   65   85   6.92   44   78   7.95   129   225   9.69   103   255   11.19
Mean 1.74 ± 1.31 1.62 ± 1.04 1.38 ± 1.16 1.59 ± 0.80 1.93 ± 1.96 2.23 ± 1.17
± SD