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.
Fig 2 Line of occlusion: the line of occlusion of upper and lower arches is a smooth (catenary) curve which is coincident to each other. In this case, 14 labialy positioned and 13, 23 lingualy positioned
