Norms and Standard Deviation Values for Subject Selection | |||
Angle | Definition | Normal | SD |
Sn-GoGn | Angle between the SN plane and the mandibular plane defined as Go-Gn | 29.8˚ | ±5.5 |
SN-PP | Angle between the SN plane and palatal plane defined as ANS-PNS | 8.2˚ | ±3.3 |
Y-axis | Angle between SN plane and line connecting Sella and Gnathion | 66.5˚ | ±3.7 |
PP-GoGn | Angle between the palatal plane defined as ANS-PNS and mandibular plane defined as Go-Gn | 21.9˚ | ±5.6 |
UFH/LFH | Ratio between upper facial height and lower facial height | 0.812 | ±0.082 |
Ar-Go-Me | Gonial angle | 123.9˚ | ±5.4 |