. 2024 Jun 28;54(6):359–373. doi: 10.4041/kjod24.016

Table 5.

Comparison of moments generated by direct printed 3D aligners of the 4 tested groups on lower canine, first premolar, and second premolar without attachment

Group	Moments x-axis (median, IQR)	Statistics	Post-hoc analysis	Moments y-axis (median, IQR)	Statistics	Post-hoc analysis	Moments z-axis (median, IQR)	Statistics	Post-hoc analysis
#33
Group 1. Equi-margin^a	1.56, 1.46	H = 28.318 df = 3 P < 0.001^***	acd^*	0.50, 0.92	H = 18.927 df = 3 P < 0.001^***	a^*	0.10, 1.67	H = 20.972 df = 3 P < 0.001^***	acd^*
Group 2. 1-mm extened margin^b	−1.06, 1.36		b^*	−0.51, 0.45		bcd^*	−0.70, 0.69		bc^*
Group 3. Equi-margin with 1-mmthickness and height^c	1.97, 2.57		acd^*	−0.31, 0.93		bcd^*	−0.34, 1.40		abc^*
Group 4. Equi-margin with 1-mm reduced buccolingual width^d	1.94, 1.58		acd^*	−0.12, 0.48		bcd^*	0.10, 0.39		ad^*
#34
Group 1. Equi-margin^a	4.50, 4.09	H = 20.583 df = 3 P < 0.001^***	abc^*	0.87, 1.05	H = 16.161 df = 3 P = 0.001^**	abd^*	0.50, 1.15	H = 17.824 df = 3 P < 0.001^***	abcd
Group 2. 1-mm extened margin^b	4.79, 1.38		abc^*	−0.04, 0.59		abcd	1.02, 0.78		abc^*
Group 3. Equi-margin with 1-mm thickness and height^c	2.57, 2.02		abcd	−0.28, 0.72		bcd^*	1.00, 0.86		abc^*
Group 4. Equi-margin with 1-mm reduced buccolingual width^d	−0.06, 2.53		cd^*	0.15, 0.47		abcd	0.20, 0.51		ad^*
#35
Group 1. Equi-margin^a	−0.47, 2.56	H = 7.106 df = 3 P = 0.069	abcd	−1.36, 1.83	H = 2.870 df = 3 P = 0.412	abcd	−0.72, 3.04	H = 3.350 df = 3 P = 0.341	abcd
Group 2. 1-mm extened margin^b	0.33, 1.51		abcd	−0.69, 1.26		abcd	−0.07, 1.83		abcd
Group 3. Equi-margin with 1-mm thickness and height^c	−0.09, 2.64		abcd	0.93, 1.28		abcd	−0.79, 2.39		abcd
Group 4. Equi-margin with 1-mm reduced buccolingual width^d	−0.65, 1.32		abcd	−0.06, 2.57		abcd	0.64, 2.71		abcd

The Kruskal–Wallis test with Bonferroni correction was performed for post-hoc multiple comparisons.

Different letters among the groups indicate a statistically significant difference at adjusted P values < 0.05, according to post-hoc comparisons using the Bonferroni correction.

IQR, interquartile range.

*Statistically significant difference at adjusted P < 0.05; **statistically significant difference at adjusted P < 0.01; ***statistically significant difference at adjusted P < 0.001.