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.
The maxillary en-masse retraction in the headgear group. A, The mandibular arch was stabilized for the use of Class II elastics. B and C, The maxillary first premolar extraction space closure with Class II elastics. D, Post-treatment photograph.
