Effectiveness of a low-intensity static magnetic field in accelerating upper canine retraction: a randomized controlled clinical trial

Table 4 The results of statistical tests for the difference in upper molar drift between both sides (mm/month)

Time	Variable	n	Minimum	Maximum	Mean	Std. deviation	z	P value
T0-T1	M.DriftS.C	17	0.0	0.96	0.35	0.33	− .594	0.552 (NS)
T0-T1	M.DriftS.E	17	-0.2	0.89	0.28	0.33	− .594	0.552 (NS)
T1-T2	M.DriftS.C	17	0.0	1.57	0.52	0.59	− .663	0.508 (NS)
T1-T2	M.DriftS.E	17	-0.3	1.89	0.43	0.64	− .663	0.508 (NS)
T2-T3	M.DriftS.C	14	0.0	0.97	0.41	0.35	− .445	0.657 (NS)
T2-T3	M.DriftS.E	14	0.0	1.62	0.35	0.49	− .445	0.657 (NS)
T3-T4	M.DriftS.C	4	0.0	0.73	0.23	0.34	-1.342	0.180 (NS)
T3-T4	M.DriftS.E	4	0.0	0.18	0.07	0.09	-1.342	0.180 (NS)
T0-Tf	M.DriftS.C	17	0.0	1.01	0.41	0.30	− .982	0.326 (NS)
T0-Tf	M.DriftS.E	17	0.0	0.81	0.32	0.23	− .982	0.326 (NS)

T0-T1: 1st month after upper canine retraction, T1-T2: 2nd month after upper canine retraction, T2-T3: 3rd month after upper canine retraction, T3-T4: 4th month after upper canine retraction, T0-TF: the overall duration
M.DriftS.C: Molar drift speed control side (mm/month)
M.DriftS.E: Molar drift speed experimental side (mm/month)
NS No significant difference, using a Wilcoxon signed-rank matched pairs test was used

ISSN: 1472-6831