Analysis
Vertical fifths:
- Analysis of width of chin
Horizontal thirds:
- Analysis of length/height of chin
Frankfurt Horizontal:
- Connects superior aspect of auditory canal to orbital margin. This line should be parallel to the floor
- A vertical line from the nasion should cross the horizontal plane at right angle and the pogonion should touch this line.
- Analysis of chin projection
- Analysis of jowl and jawline irregularities
- Analysis of mandible angle