Founded in 1952, the MASO has approximately 1,200 members in all categories and is a regional (constituent) association of the American Association of Orthodontists.

Included in its geographic area are the states of Delaware, District of Columbia, Maryland, New Jersey, Pennsylvania (east of the Alleghenies), Puerto Rico, U.S. Virgin Islands.

MASO holds its Annual Session in the fall each year in a location selected by the President and planning committee.

Mission Statement

The Middle Atlantic Society of Orthodontists shall:

“As a constituent of the American Association of Orthodontists, promote ethical and quality orthodontic care while advocating and providing a voice for our members, components and educational institutions.”