Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Image of the WALA (green) and FA (yellow) points on the first and second premolar teeth and the first molar tooth (a); display of the transverse distance measured between the WALA and FA points (b)
WALA: basal arch point FA: facial axis point
