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.
Landmarks and linear measurement on posteroanterior radiograph. Maxillary-maxillary apical base width (Mxr-Mxl) was defined as the horizontal distance between the right and left intersections of the lateral contour of the maxillary alveolar process and the lower contour of the zygomatic process of the maxilla.
