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.
Symmetry planes and landmarks on the surface of the skull. (a) FHP: Frankfort horizontal plane; MSP: midsagittal plane; CP: coronal plane. (b) OP: occlusal plane; MnP: mandibular plane. (c) U1: midpoint of the contact of the upper central incisors; L1: midpoint of the contact of the lower central incisors; 16 and 26: mesiobuccal cusp tips of the upper first molars; Me: menton.
