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Table 3 Mean score for smear layer at the coronal, middle, and apical thirds and overall of the canals

From: Cleaning ability of rotary NiTi systems with different kinematics

SystemCoronalMiddleApicalOverall
PTN1.33 ± 0.48a1.26 ± 0.45a2.20 ± 0.77a1.60 ± 0.71a
WOG1.33 ± 0.48a1.46 ± 0.51a3.06 ± 1.03b1.95 ± 1.06a
TF1.20 ± 0.41a1.53 ± 0.51a1.93 ± 0.88a1.55 ± 0.69a
P value0.655ns0.314ns0.006*0.206 ns
  1. Different superscript letters in the same column indicate statistically significance difference; “*” indicates significant (P < 0.05)
  2. ns non significant