Table 3. .

Percentages of Frequency of Directional Bias Resulting in the Two Transfer Tray Groups^a

Group	Total, No.	Dimension
		Mesiodistal, %		Vertical, %		Buccolingual, %		Angulation, %		Torque, %		Rotation, %
		+	−	+	−	+	−	+	−	+	−	+	−
3D printed transfer tray	108	61.1	38.9	79.6	20.4	73.2	26.9	38.9	61.1	44.4	55.6	59.3	40.7
Vacuum-formed transfer tray	104	87.5	12.5	93.3	6.7	61.5	38.5	54.8	45.2	46.2	53.9	44.2	55.8

^a“+” Represents a final bracket position more mesial, buccal, or occlusal, or with more buccal crown torque, more mesial tip, or a facial surface rotated more mesially than predicted. “−” represents the reverse.