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

Table 13 UR1 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)	0.47	0.18	-0.01	0.22	0.15	0.16	< 0.001	< 0.001	< 0.001
Fy (N)	-3.77	2.00	0.32	1.24	-2.59	1.20	< 0.001	< 0.001	< 0.001
Fz (N)	-0.48	0.22	-1.68	0.25	-0.63	0.32	< 0.001	< 0.001	< 0.001
Mx (Nmm)	-13.26	5.04	2.48	2.82	-6.06	5.90	< 0.001	< 0.001	< 0.001
My (Nmm)	2.29	2.76	-5.13	3.17	0.52	1.95	< 0.001	< 0.001	< 0.001
Mz (Nmm)	46.93	23.16	13.52	15.14	34.34	13.30	< 0.001	< 0.001	< 0.001

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