Stages UR UL LR LL  
  Mean Mean Mean Mean p-value
0 13.57 (5-30) 13.04 (5-30) 12.57 (5-30) 12.58 (5-30) 0.05, NS
1 11.17 (9-13) 11.30 (10-13) 10.70 (6.80-13.80) 11.20(9-13.10) 0.06, NS
2 11.86 (10-14) 11.58 (9-15) 11.37 (9-15) 11.14 (9-15) 0.52,NS
3 12.25 (9-17) 12.47 (9-19) 12.01 (9-16) 12.07 (9-16) 0.43, NS
4 14.44(11.10-21) 14.65 (12-23) 13.90 (11-21) 13.86 (11-21) 0.07, NS
5 14.25 (12-17) 14.95 (12-21) 14.17 (12-17) 14.08 (12-17) 0.08, NS
6 14.66 (11-22) 14.66 (11-22) 14.35 (11-22) 14.61 (11-22) 0.07, NS
7 17.20 (12-23) 17.65(11.10-23) 17.18 (12-23) 17.23(11.10-23) 0.09, NS
8 17.62 (14-25) 17.44 (14-25) 18.12 (15-25) 17.86 (15-25) 0.10, NS
9 19.87 (15-26) 20.13 (15-27) 19.90 (15-26) 20.05 (15-27) 0.08, NS
10 21.63 (15-30) 21.65 (15-30) 21.87 (15-30) 21.92 (15-30) 0.07, NS
NS = nonsignificant, p-value – probability value
Table 4: Variations in mean ages of each developmental stages among four third molars.