Table 1 Mean (Standard deviation) of difference between Pre- and Post-operative values of various parameters.

Apical Diameter (mm)

0^a

0 ^a

0^a

0.300^a (0.47)

0.83^b (0.38)

1.09^b (0.288)

1.35^b (0.487)

1.83^b (0.388)

Root Length (mm)

0 ^a

0^a

0^a

0.48^a (0.51)

0.91^b (0.28)

1.17^b (0.388)

1.57^b (0.507)

1.91^b (0.417)

Thickness of Mesial Dentinal wall- Apical third (mm)

0 ^a

0^a

0^a

0.04^a (0.20)

0.70^b (0.47)

0.96^b (0.209)

1.00^b (0.000)

1.04^b (0.209)

Thickness of Distal Dentinal wall – Apical third (mm)

0 ^a

0 ^a

0^a

0.43^a (0.50)

0.87^b (0.34)

1.00^b (0.000)

1.04^b (0.209)

1.04^b (0.209)

Thickness of Mesial Dentinal wall- Middle third (mm)

0^a

0^a

0^a

0^a

0.13^a (0.34)

0.30^a (0.470)

0.48^b (0.511)

0.57^b (0.507)

Thickness of Distal Dentinal wall- Middle third (mm)

0^a

0^a

0^a

0^a

0^a

0.26^a (0.449)

0.30^a (0.470)

0.52^b (0.511)