Figure 3.
Fabrication of reference test blocks. (a) The silicone impression (green) and light-curing resin (red), (b) Reference test block (white scale: 10 mm).
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.