Influence of maxillary molar distalization with clear aligners on three-dimensional direction: molar distal movement, intrusion, distal tip and crown buccal torque

Progress in Orthodontics

Table 3 Differences between the predicted and achieved movements

	Tooth	Achieved	Predicated	P
	Tooth	Mean ± SD	Mean ± SD	P
Distal movement	Maxillary first molar (mm)	1.25 ± 0.79	2.17 ± 1.03	0.000
Distal movement	Maxillary second molar (mm)	1.41 ± 1.00	2.66 ± 1.15	0.000
Intrusion	Maxillary first molar (mm)	0.47 ± 0.41	0.18 ± 0.54	0.008
Intrusion	Maxillary second molar (mm)	0.58 ± 0.65	0.10 ± 1.12	0.008
Distal tip	Maxillary first molar (°)	5.30 ± 4.56	1.53 ± 2.55	0.000
Distal tip	Maxillary second molar (°)	4.87 ± 4.50	− 1.95 ± 4.32	0.000
Crown buccal torque	Maxillary first molar (°)	1.95 ± 4.18	− 1.15 ± 4.75	0.000
Crown buccal torque	Maxillary second molar (°)	0.43 ± 4.39	− 4.27 ± 6.42	0.000