Clinical Efficiency of Two Sequences of Orthodontic Wires to Correct Crowding of the Lower Anterior Teeth

Table 2

Mean and standard deviation values of Little’s index of irregularity during treatment phases.

Group	Baseline	1st assessment	2nd assessment	3rd assessment	4th assessment	5th assessment
NiTi sequence	4.37 (±0.80)	2.85 (±0.86)	1.82 (±0.83)	0.98 (±0.65)	0.38 (±0.64)	0.23 (±0.54)
NiTi heat-activated sequence	4.59 (±0.75)	2.63 (±0.66)	1.35 (±0.70)	0.48 (±0.55)	0.16 (±0.36)	0 (±0.00)