Predictability of orthodontic movement with orthodontic aligners: a retrospective study

Progress in Orthodontics

Table 4 Accuracy of movements achieved

	N	Mean accuracy	Standard deviation	Mean standard error	Significance
Upper arch
VL tip incisors	28	0.65	0.34	0.064714	*
VL tip canines	16	0.54	0.57	0.143044	*
VL tip premolars	32	0.70	0.81	0.142849	*
VL tip molars	16	0.52	0.53	0.133131	*
MD tip incisors	36	0.77	0.58	0.096078	*
MD tip canines	16	0.78	0.50	0.125380	NS
MD tip premolars	27	0.71	0.78	0.150417	NS
MD tip molars	22	0.98	0.98	0.217782	NS
Rot. incisors	45	0.61	0.29	0.042538	*
Rot. canines	25	0.62	0.66	0.131114	*
Rot. premolars	29	0.54	0.54	0.100854	*
Rot. molars	18	0.78	0.61	0.144458	NS
Lower arch
VL tip incisors	35	0.86	0.65	0.109173	NS
VL tip canines	15	0.66	0.55	0.142351	*
VL tip premolars	29	0.90	0.82	0.151409	NS
VL tip molars	7	0.86	0.51	0.191882	NS
MD tip incisors	31	0.88	0.86	0.154196	NS
MD tip canines	18	0.87	0.82	0.193936	NS
MD tip premolars	33	0.97	0.97	0.168750	NS
MD tip molars	17	0.62	0.82	0.199778	NS
Rot. incisors	51	0.67	0.57	0.080357	*
Rot. canines	25	0.54	0.74	0.147841	*
Rot. premolars	36	0.83	1.38	0.229989	NS
Rot. molars	14	0.85	0.67	0.180257	NS

VL tip vestibulolingual tip, MD tip mesiodistal tip, Rot. rotation, NS not significant
*p < 0.05