Accuracy (trueness and precision) of 3D printed orthodontic models finalized to clear aligners production, testing crowded and spaced dentition

Table 4 Comparison of Root mean-squared (RMS) values of precision between models with diastema and edentulous spaces (DEM) and models with crowding (CM) for each 3D printer tested

3D Printers	Groups	N	RMS	SD	RMS Difference (mm)	SE Difference	Significance
3D Printers	Groups	N	(mm)	SD	RMS Difference (mm)	SE Difference	Significance
Asiga Pro 4k65	DEM	10	0,040	0,013	0,001	0,005	NS
Asiga Pro 4k65	CM	10	0,039	0,012	0,001	0,005	NS
Photon M3	DEM	10	0,095	0,019	0,005	0,01	NS
Photon M3	CM	10	0,100	0,025	0,005	0,01	NS
Form 3B	DEM	10	0,051	0,016	0,002	0,007	NS
Form 3B	CM	10	0,049	0,014	0,002	0,007	NS
Vector 3SP	DEM	10	0,048	0,014	0,002	0,006	NS
Vector 3SP	CM	10	0,050	0,014	0,002	0,006	NS

N Sample number, SD Standard deviation, NS Not significant. Significance set at p < 0.05 and based on unpaired Student's t test

ISSN: 1472-6831