Planes and angles
Ricketts' E-line
From the nasal tip to the soft-tissue pogonion. In a pleasing adult profile the upper lip sits about 4 mm and the lower lip about 2 mm behind it.
What it is
From the nasal tip to the soft-tissue pogonion. In a pleasing adult profile the upper lip sits about 4 mm and the lower lip about 2 mm behind it.
How the Codex reads it
Part of READ item A2's profile read, alongside the true vertical and the convexity angle.
Questions
What is the ricketts' e-line?
From the nasal tip to the soft-tissue pogonion. In a pleasing adult profile the upper lip sits about 4 mm and the lower lip about 2 mm behind it.
How does the Band Codex read the ricketts' e-line?
Part of READ item A2's profile read, alongside the true vertical and the convexity angle.
Sources
- Ricketts R.M. Esthetics, environment, and the law of lip relation. American Journal of Orthodontics, 1968;54:272.The E-line: the upper lip about 4 mm and the lower lip about 2 mm behind the line from nasal tip to soft-tissue pogonion.
Every number in this atlas cites the study it came from. The full method, including what this site withholds on purpose, is on sources and method.
This site teaches one level above the Codex's working manual: the architecture is public, the coordinates are not. This page withholds entry points, landmark constructions, volumes and read-to-point routing, exactly as the atlas does. What is shown and what is withheld.