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Table 4 Duration of pain in the two groups

From: Tooth alignment and pain experience with A-NiTi versus Cu-NiTi: a randomized clinical trial

Group One day Two days Three days Four days More than 4 days P value*
A-NiTi (%) 2 (4.5) 8 (18.2) 13 (29.5) 11 (25) 10 (22.7) 0.546
Cu-NiTi (%) 6 (13.9) 9 (20.9) 13 (30.2) 7 (16.3) 8 (18.6)  
  1. *Fisher’s exact test