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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