Forces and moments generated by 3D direct printed clear aligners of varying labial and lingual thicknesses during lingual movement of maxillary central incisor: an in vitro study

Progress in Orthodontics

Table 2 Comparison of forces and moments generated by direct printed aligners of the 5 tested groups on the UL1

Force	Group 1		Group 2		Group 3		Group 4		Group 5		P value^a
Force	Median	IQR	Median	IQR	Median	IQR	Median	IQR	Median	IQR	P value^a
Fx	1.44	1.22–1.80	1.00	0.78–1.17	1.01	0.86–1.15	1.04	0.89–1.21	0.90	0.76–1.05	< 0.001
Fy	− 0.27	− 0.64 to 0.03	− 0.51	− 0.75 to − 0.26	− 0.24	− 0.55–0.14	− 0.25	− 0.46 to 0.00	− 0.23	− 0.48 to 0.08	< 0.001
Fz	0.12	− 0.10 to 0.25	0.11	0.03–0.21	0.14	0.01–0.27	0.19	− 0.04–0.33	− 0.03	− 0.17 to 0.14	< 0.001
Mx	5.97	2.29–8.08	0.75	− 0.85 to 3.48	4.06	0.86–5.97	2.02	0.08–4.06	0.11	− 2.74 to 2.56	< 0.001
My	8.96	7.69–11.33	4.95	3.33–6.11	6.10	4.55–8.55	7.35	6.40–8.30	6.16	4.69–7.58	< 0.001
Mz	− 20.74	− 25.71 to − 18.19	− 11.26	− 12.81 to − 9.05	− 14.98	− 16.28 to − 13.17	− 12.67	− 16.57 to − 10.78	− 11.89	− 15.00 to − 9.28	< 0.001