Welcome @ the Greater Philadelphia Society of Orthodontists

Founded in 1945 by John Valentine Mershon, the Greater Philadelphia Society of Orthodontics is a professional association for dentists specialized in orthodontics. As a constituent of the American Association of Orthodontists covering the Philadelphia Tri-state Area, our mission is to advance the art and science of orthodontics.

GPSO Update

Orthodontist Meeting in the Philadelphia, New Jersey, Delaware Area

Save the Date:
Continuing Education Course
Wednesday, November 19, 2014
Union League, Philadelphia, PA
"Legal Concerns Affecting Today's Orthodontic Practice"
– More information & Online registration

Philadelphia Orthodontist News


Updates from the Orthodontic Residency Programs at Temple, UPenn and Albert Einstein Medical Center.

– Read summer 2014 issue

GPSO Historical Info

In Profile: John Valentine Mershon

GPSO founder Dr. Mershon developed the removable lingual arch appliance and pioneered the application of biological principles in orthodontics.
– Read more