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