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About MASO
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- MASO News
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Resources
EVENTS CALENDAR

MASO 2025

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About MASO

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.

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Maso information

Middle Atlantic Society of Orthodontists
400 W. Wilson Bridge Rd., Ste 120
Worthington, OH 43085
Toll Free (866) 748-6276
Fax (614) 221-1989

E-mail: maso@assnoffices.com

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