Fig 1.
Schematic diagram of access outline in lower 1st molar. black line for conventional outline and red line for limited access outline on occlusal surface.
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.