Comparative analysis of intraoral scanners accuracy using 3D software: an in vivo study

Progress in Orthodontics

Table 3 Repeatability of linear measurements (mm) of STL files related to PVS impression

	Mean	Median	SD	Cv	Significance
Upper arch
13	0.019	0.007	0.041	2.141	*
23	0.025	0.025	0.058	2.325	*
14	0.021	0.008	0.052	2.447	*
24	0.018	0.018	0.008	2.239	*
15	0.023	0.023	0.085	3.689	*
25	0.018	0.018	0.036	2.010	*
16	0.020	0.020	0.120	2.699	*
26	0.021	0.021	0.118	1.351	*
17	0.027	0.027	0.092	2.234	*
27	0.021	0.021	0.091	1.691	*
Lower arch
33	0.060	0.015	0.055	2.007	*
43	0.068	0.018	0.029	1.732	*
34	0.058	0.020	0.060	1.572	*
44	0.054	0.016	0.036	1.696	*
35	0.062	0.019	0.100	1.616	*
45	0.057	0.016	0.094	1.663	*
36	0.053	0.019	0.080	1.507	*
46	0.061	0.015	0.100	1.640	*
37	0.054	0.054	0.090	1.673	*
47	0.056	0.017	0.092	1.639	*