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. 2013 Dec;14(4):165–169.

Table 2.

Comparison between chronological age and dental age in girls

Age group Chronological age
Mean±SD
Dental age
Mean±SD
Age difference
Mean±SD
95% CI of age difference p.value
7-8.99 08.11±0.98 8.14±0.98 0.03±0.74 -0.30, 0.37 0.840
9-10.99 10±0.52 9.90±0.87 -0.09±0.94 -0.52, 0.33 0.648
11-12.99 11.95±0.58 11.50±1.11 -0.45±1.30 -1.06, 0.16 0.140
13-15 13.97±0.56 14.65±1.78 0.68±1.47 0.03, 1.34 0.041