Close | |
Figure 4: Wylie took several measurements on the Frankfort plane. These were as follows: The most posterior point on the mandibular condyle to Sella, Sella to pterygomaxillary fissure, pterygomaxillary fissure to the anterior nasal spine, and mandibular length. These landmarks were projected as perpendiculars to the Frankfort horizontal plane. According to Wylie, any of the first four dimensions, if larger than their respective mean value, will tend to make the face more orthognathic, and if less, they tend to make the face more prognathic |
|