Progress in Orthodontics

Table 3 A comparison of monthly retraction rates of the two techniques

From: Three-dimensional assessment of two different canine retraction techniques: a randomized split-mouth clinical trial

	PAS Mean (mm) ± SD	DS Mean (mm) ± SD	p value
T0–T1	0.53±0.26	0.66±0.28	0.050^a
T1–T2	0.58±0.30	0.71±0.35	0.101^a
T2–T3	0.44±0.20	0.72±0.39	0.000^b**
Total	1.57±0.69	2.09±0.84	0.006^a*

PAS power arm sliding, DS direct sliding
*p <0.05, **p <0.01
^aIndependent sample t-test
^bMann-Whitney U test

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