Table 3: Soft tissue cephalometric values of different ethnic groups using Legan and Burstone analysis.

VariableChineseJapaneseNorth IndiansSaudisYemeniCaucasians

Facial convexity angle (°)10.5 ± 3.510.1 ± 5.713.34 ± 4.815.16 ± 4.6416.9 ± 5.212 ± 4
Maxillary prognathism (mm)2.5 ± 32.3 ± 4.65.83 ± 4.36.47 ± 4.276.9 ± 4.16 ± 3
Mandibular prognathism (mm)N.A. −5.7 ± 8.3−1.31 ± 6.4−1.37 ± 7.19−4.9 ± 6.70 ± 4
Vertical height ratio1.0 ± 0.10.9 ± 0.11.03 ± 0.11.00 ± 0.091.0 ± 0.11
Lower face-throat angle (°)96 ± 498.1 ± 9.5111.57 ± 8.1102.60 ± 8.24107.6 ± 7.9100 ± 7
Lower vertical height-depth ratio1.1 ± 0.21.3 ± 0.21.22 ± 0.21.14 ± 0.201.4 ± 0.21,2
Nasolabialangle (°)95 ± 3102.3 ± 11.695.79 ± 11.4106.02 ± 11.01106.4 ± 9.7102 ± 8
Upper lip protrusion (mm)7.0 ± 1.55.8 ± 2.14.72 ± 1.73.84 ± 1.562.6 ± 1.23 ± 1
Lower lip protrusion (mm)N.A. 5.0 ± 2.52.83 ± 1.63.26 ± 2.072.2 ± 2.22 ± 1
Mentolabial sulcus (mm)3.5 ± 24.3 ± 1.45.82 ± 1.24.60 ± 1.235.0 ± 1.14 ± 2
Vertical lip-chin ratio0.50.4 ± 0.10.440.44 ± 0.050.4 ± 0.10,5
Maxillary incisor exposure (mm)1.5 ± 1.51.8 ± 1.72.35 ± 1.53.26 ± 1.962.9 ± 1.52 ± 2
Interlabial gap (mm)1.0 ± 1.01.9 ± 0.90.24 ± 0.72.24 ± 0.930.6 ± 0.42 ± 2

N.A.: not available.