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Table 4 Success rate and direction of inaccuracy of conventional (CSP) and virtual surgery planning (VSP)

From: Predictability of maxillary positioning: a 3D comparison of virtual and conventional orthognathic surgery planning

Measurement

Success rate

Direction of inaccuracy

Absolute discrepancy < 1 mm or 2°

n (percentage)

Absolute discrepancy < 2 mm or 4°

n (percentage)

Under-correction

 < 2 mm or 4°

n (percentage)

Over-correction

 < 2 mm or 4°

n (percentage)

CSP (n = 26)

 U1 (x)

10 (39%)

23 (89%)

1 (4%)

3 (12%)

 U1 (y)

18 (69%)

23 (89%)

2 (8%)

1 (4%)

 U1 (z)

10 (39%)

19 (73%)

7 (27%)

0 (0%)

 OcP (x)

24 (92%)

26 (100%)

0 (0%)

0 (0%)

 OcP (y)

16 (62%)

24 (92%)

0 (0%)

2 (8%)

 OcP (z)

24 (92%)

26 (100%)

0 (0%)

0 (0%)

VSP (n = 26)

 U1 (x)

14 (54%)

22 (85%)

3 (12%)

3 (12%)

 U1 (y)

11 (42%)

19 (73%)

3 (12%)

4 (15%)

 U1 (z)

9 (35%)

12 (46%)

13 (50%)

1 (4%)

 OcP (x)

23 (89%)

26 (100%)

0 (0%)

0 (0%)

 OcP (y)

14 (54%)

22 (85%)

2 (8%)

2 (8%)

 OcP (z)

22 (85%)

26 (100%)

0 (0%)

0 (0%)

  1. Success was defined as absolute discrepancy < 1 mm/ 2° or < 2 mm/ 4° between the planned and the achieved results