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Table 3 Incremental pattern to understand the pattern of underestimation and overestimation in development amongst our subjects

From: Dental age assessment of North Indian origin children using Nolla’s method in mandibular second molar

Period of variation in dental age and chronological age

No. of subjects in whom underestimation of age was observed (n)

No. of subjects in whom underestimation of age was observed (n)

< 3 months

136 (15.11%)

172 (19.11%)

3–6 months

227 (25.22%)

119 (13.22%)

6–8 months

51 (5.6%)

35 (3.9%)

> 8 months

100 (11.1%)

10 (1.1%)

Total

514 (57.1%)

336 (37.3%)

  1. PS: does not include 50 subjects having exact chronological age and dental age