Figure 1.
Different methods for intruding the anterior teeth (a) Rickett’s utility arch, (b) Burstone’s intrusion arch (also CTA), (c) mini-screw.
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.