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

Table 3 Comparison of Root mean-squared (RMS) values of precision of models with diastema and edentulous space (DEM) and models with crowding (CM) prototyped with different 3D printers

3D Printers	N	Groups	RMS (mm)	SD	95% C.I		Significance
3D Printers	N	Groups	RMS (mm)	SD	Lower limit	Upper limit	Significance
Asiga Pro 4k65 (a)	10	DEM	0,040 (b)	0,013	0,031	0,050	p < 0.001
Photon M3 (b)	10	DEM	0,095 (a,c,d)	0,019	0,081	0,108
Form 3B (c)	10	DEM	0,051 (b)	0,016	0,039	0,063
Vector 3SP (d)	10	DEM	0,048 (b)	0,014	0,036	0,060
Asiga Pro 4k65 (a)	10	CM	0,039 (b)	0,012	0,030	0,048	p < 0.001
Photon M3 (b)	10	CM	0,100 (a,c,d)	0,025	0,082	0,118
Form 3B (c)	10	CM	0,049 (b)	0,014	0,038	0,059
Vector 3SP (d)	10	CM	0,050 (b)	0,014	0,040	0,060

Significance set at p < 0.05 and based on one-way analysis of variance (ANOVA) and Tukey's post-hoc comparisons tests; a, b, c, d = identifiers for post-hoc comparisons tests
N Sample number, SD Standard deviation, C.I Coefficient interval

ISSN: 1472-6831