Forces and moments generated during extrusion of a maxillary central incisor with clear aligners: an in vitro study

Table 10 UL1 Comparison of TC-85 groups

Force	No attachment		Attachment		Pressure columns		P-value^a	P-value^b	P-value^c
Force	Mean	Std Dev	Mean	Std Dev	Mean	Std Dev	P-value^a	P-value^b	P-value^c
Fx (N)	1.40	0.32	0.51	0.36	1.19	0.27	< 0.001	< 0.001	< 0.001
Fy (N)	-0.67	0.28	-0.49	0.39	-0.48	0.36	< 0.001	< 0.001	< 0.001
Fz (N)	0.41	0.17	0.39	0.29	0.45	0.16	< 0.001	< 0.001	< 0.001
Mx (Nmm)	4.68	2.09	5.47	2.70	5.59	2.19	< 0.001	< 0.001	< 0.001
My (Nmm)	6.98	1.52	1.00	2.77	6.98	1.61	< 0.001	< 0.001	< 0.001
Mz (Nmm)	-14.04	2.93	-6.45	6.83	-12.46	3.20	< 0.001	< 0.001	< 0.001

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