Table 1.

Interoperator and Intraoperator Comparison of the Position of the Orthodontic Attachments, Measured According to the Bonding Technique in the Three Parameters Evaluated^a

Dimension	Direct Bonding				Virtual Bonding
	Experienced Clinicians		Postgraduate Students		Experienced Clinicians		Postgraduate Students
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Vertical	–0.81 a	0.34	–0.96 a	0.24	–0.31 b	0.14	–0.42 b	0.07
Horizontal	–0.01 c	0.06	0.00 c	0.11	0.10 d	0.07	0.13 d	0.09
Angular	0.17 ef	1.11	–0.36 ef	0.64	–0.03 e	0.46	–0.84 f	0.55

^aData shown as mean ± standard deviation (SD); N = 10 participants per group. For each dimension, different letters mean statistically different values among groups. Vertical: (a) P < .001 compared with (b) for the same professional group. Horizontal: (c) P < 0.01 compared with (d) for the same professional group. Angular: (e) P < .05 compared with (f) for the virtual bonding method. Two-way analysis of variance followed by the Bonferroni posttest.