ADA Seal of Acceptance 360 video Play Video: Experience the ADA Seal in 360°

Experience the ADA Seal in 360°

There’s a secret to keeping your family’s smiles healthy at home – and on the go. Explore this interactive video to find out.


MouthHealthy: Any Age, Any Stage

Whether you’re 8 or 80, dental health is key. Get tips, advice and healthy habits for your whole family.

Learn More

Manage Your Practice Successfully. Find tips and tools and unique learning opportunities.


Water Fluoridation

5 reasons why fluoride is great and the 70+ years of research behind it.

Learn Why
kenton and wife

Welcome to the Ninth District Dental Society!

Ninth District Dental Society is comprised of dentists from Crawford, Erie, Lawrence, Mercer and Venango Counties who are also members of the American Dental Association and the Pennsylvania Dental Association.

Future Meeting Dates



President:  Dr. Deanna L. Thomas
President-Elect:  Dr. ​James Mancini

Immediate Past President:  Dr. Douglas M. Hutchinson
Secretary/Treasurer:  Dr. Stephen T. Radack, III.

PDA Trustee:  Dr. Samer Mansour

Membership Chair:  Dr. James Mancini
Children's Dental Health Month Chair:  Dr. Samer Mansour