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. 2009 Dec;17(6):590–595. doi: 10.1590/S1678-77572009000600010

TABLE 1. Frequency of instrumented walls according to the diameter of the instrument used.

Wall/Instrument Group
Nitiflex™ files ProTaper Universal™
n % n %
Mesial
20/F1 10 100.0 9 90.0
25/F2 10 100.0 10 100.0
30/F3 10 100.0 10 100.0
P value p = 1.000 p = 1.000
Buccal
20/F1 9 90.0 9 90.0
25/F2 9 90.0 10 100.0
30/F3 9 90.0 10 100.0
P value p = 1.000 p = 1.000
Distal
20/F1 8 80.0 8 80.0
25/F2 9 90.0 10 100.0
30/F3 8 80.0 10 100.0
P value p = 1.000 p = 0.310
Lingual
20/F1 8 80.0 8 80.0
25/F2 8 80.0 8 80.0
30/F3 8 80.0 8 80.0
P value p = 1.000 p = 1.000
Entire walls
20/F1 35 87.5 34 85.0
25/F2 36 90.0 38 95.0
30/F3 35 87.5 38 95.0
P value p = 1.000 p = 0.215

N= number of walls

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