Overview of The Commission on Dental Testing in Ohio (CODT)

The Commission on Dental Testing in Ohio is a private not-for-profit organization, which develops, administers, scores and reports the results of examinations to the Ohio State Dental Board in their determination of eligibility for Expanded Functions Dental Auxiliary (EFDA) certification and registration.

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News & Announcements

CODT news, announcements, and upcoming testing dates are listed below. Registration windows close 30 days in advance of the exam dates.

** Recent Updates: CODT now has the capability to hold exams at various institutions throughout Ohio for increased convenience. Additionally, Clinical Exam Teeth to be tested are now publicized in advance (located below, next to each exam date.)


Next Open Ohio EFDA Examination Date


Upcoming EFDA Examination Dates

Looking for answers to commonly asked questions? Check out our newly added Frequently Asked Questions (FAQ) page where you can also download our EFDA Exam Checklist PDF.