Table 3 Discrepancy between the planned and achieved maxillary positions in conventional (CSP) and virtual surgery planning (VSP)

CSP (n = 26)

 U1 (x) (mm)

− 0.7 (2.3)

1.2 (1.1)

< 0.001*

 U1 (y) (mm)

− 0.2 (1.7)

0.7 (1.1)

< 0.001*

 U1 (z) (mm)

1.4 (1.6)

1.6 (1.3)

< 0.001*

 OcP (x) (°)

0.3 (1.4)

0.9 (1)

< 0.001*

 OcP (y) (°)

0.3 (3.3)

1.6 (1.8)

< 0.001*

 OcP (z) (°)

− 0.4 (1.5)

0.7 (0.9)

< 0.001*

VSP (n = 26)

 U1 (x) (mm)

− 0.7 (1.6)

1 (1)

< 0.001*

 U1 (y) (mm)

− 0.1 (2.7)

1.3 (1.5)

< 0.001*

 U1 (z) (mm)

2.1 (2.9)

2.2 (2.2)

< 0.001*

 OcP (x) (°)

0.2 (2.0)

1 (1)

< 0.001*

 OcP (y) (°)

− 0.2 (3.9)

1.9 (2.7)

< 0.001*

 OcP (z) (°)

0.3 (2.0)

0.9 (1.2)

< 0.001*