Table 2: 𝑃 values obtained with the comparison between the groups at the apical, middle, and coronal areas.

GroupsOverallCoronalMiddleApical

Laser Nd:YAG-EDTA<0.001<0.001<0.001<0.001
Laser Nd:YAG-Maleic acid<0.001<0.001<0.001<0.001
EDTA-Maleic acid0.400.071.000.22
Maleic acid-Control<0.001<0.001<0.001<0.001
EDTA-Control<0.001<0.001<0.001<0.001
Nd:YAG laser-Control0.1570.0490.0960.327