Biological RDH/RDA/Staff Certification

Requirement: IABDM membership in good standing

Registered Dental Hygienists, Registered Dental Assistants, and office staff are encouraged to become certified to work in a biological dental office. You can earn your registration in four easy steps.

Step one: If you haven’t done so already, become a member of the IABDM.

Step two: Take our Biological Dentistry 101 course online or in person (offered at our annual meeting and occasionally at regional meetings).

Step three: Take the written exam. Conceived as a learning experience, the exam is open book and will cover topics such as

  • Mercury, mercury toxicity, and mercury-safe dentistry.
  • Root canals, cavitations, and other oral foci.
  • Biological approaches to periodontal disease.
  • Oral manifestations of systemic health problems.
  • Fluoride.
  • Therapeutic ozone.

Step four: Do one of the activities below.

  1. Write an article about using natural approaches in an oral cavity and submit it to our education committee for review.
  2. Complete a small study and present it to our education committee via Skype.
  3. Do a PowerPoint case presentation about a patient that shows you thinking outside the box of a regular hygiene visit and submit it to our education committee for review.
  4. Do a video worthy of being on YouTube about a topic in biological dentistry. Be creative and make it fun!

Maintaining Certification

To maintain certification, you must stay current on your dues, show proof of at least 12 hours CE per year (in biological dentistry or medicine) and attend at least one IABDM conference every 2 years.


The test fee for certification in biological dental hygiene is $350. There is an additional fee for Biological Dentistry 101: $100 for the online course, $250 for the live version.


If you plan to register for the next live course.