Table 6 Average percentages of overlapping surfaces of the forehead, left cheek, right cheek tip of nose, and chin areas in the five tolerance bands when comparing Vectra–Face Hunter, Vectra–Bellus 3D and Bellus 3D–Face Hunter scanners
From: Accuracy of 3D facial scans: a comparison of three different scanning system in an in vivo study
Tolerance ranges | Area | Mean (%) | ||
|---|---|---|---|---|
Vectra–Face Hunter | Vectra–Bellus 3D | Bellus 3D–Face Hunter | ||
0,5→0; 0→− 0,5 (mm) | Forehead | 57.14 | 40.31 | 65.92 |
1,0→0,5; − 05→− 1 (mm) | Forehead | 34.31 | 34.86 | 30.41 |
1,5→1,0; − 1,0→− 1,5 (mm) | Forehead | 7.27 | 14.23 | 2.4 |
> 1,5 (mm) | Forehead | 0.03 | 2.15 | 1.35 |
< − 1,5 (mm) | Forehead | 0.73 | 5.23 | 0.02 |
0,5→0; 0→− 0,5 (mm) | Left cheek | 58.58 | 69.67 | 72.9 |
1,0→0,5; − 05→− 1 (mm) | Left cheek | 33.93 | 23.46 | 22.06 |
1,5→1,0; − 1,0→− 1,5 (mm) | Left cheek | 5.25 | 5.41 | 3.8 |
> 1,5 (mm) | Left cheek | 0 | 0.01 | 1.1 |
< − 1,5 (mm) | Left cheek | 1.31 | 1.46 | 0.19 |
0,5→0; 0→− 0,5 (mm) | Right cheek | 64 | 67.71 | 74.03 |
1,0→0,5; − 05→− 1 (mm) | Right cheek | 31.47 | 25.86 | 19.41 |
1,5→1,0; − 1,0→− 1,5 (mm) | Right cheek | 4.28 | 4.87 | 4.4 |
> 1,5 (mm) | Right cheek | 0 | 0.04 | 1.31 |
< − 1,5 (mm) | Right cheek | 0.27 | 1.47 | 1.16 |
0,5→0; 0→− 0,5 (mm) | Tip of the nose | 52.06 | 54.5 | 86.81 |
1,0→0,5; − 05→− 1 (mm) | Tip of the nose | 42.98 | 36.5 | 15.41 |
1,5→1,0; − 1,0→− 1,5 (mm) | Tip of the nose | 4.31 | 8.63 | 0.39 |
> 1,5 (mm) | Tip of the nose | 0.02 | 0.29 | 0 |
< − 1,5 (mm) | Tip of the nose | 0.08 | 0.09 | 0 |
0,5→0; 0→− 0,5 (mm) | Chin | 59.4 | 59.15 | 70.13 |
1,0→0,5; − 05→− 1 (mm) | Chin | 30.17 | 30.76 | 25.13 |
1,5→1,0; − 1,0→− 1,5 (mm) | Chin | 13.26 | 6.37 | 4.87 |
> 1,5 (mm) | Chin | 1.3 | 3.33 | 0.05 |
< − 1,5 (mm) | Chin | 0.35 | 0.28 | 0.01 |