College of Dental Hygienists of Ontario
The College of Dental Hygienists of Ontario regulates the practice of dental hygiene in the interest of the overall health and safety of the public of Ontario.

Self-Service-E  FAQ-E
Registration Guides

The College of Dental Hygienists of Ontario (the College) regulates the profession of dental hygiene in order to ensure that the public has access to safe and ethical care. As part of this mandate, the College sets the standards for entry-to-practice and establishes standards for safe and ethical practice. Only individuals who are registered with the College are legally authorized to use the title Dental Hygienist in Ontario.

While all applicants must meet the registration requirements, there are different pathways to register to practise. The following links provide information that applies to the different application streams:

New Graduate Guide to the Online Application Process


Review the appropriate Registration Guide and the Registration FAQs before completing the application forms. After completing the application  documents, mail the completed application package to:

College of Dental Hygienists of Ontario
175 Bloor Street East
North Tower, Suite 601
Toronto, ON   M4W 3R8

You may not work as a dental hygienist or in any way hold yourself out as a person qualified to practise dental hygiene in the province of Ontario until after you have been issued a certificate of registration.

Classes of Registration

There are three categories of certificates of registration with CDHO:

General – applies to those dental hygienists who meet the basic registration requirements; all registrants are initially registered in the General category.

Specialty – applies to registrants who hold a General certificate of registration and who have completed a program in restorative dental hygiene that meets the requirements of the College.

Inactive – is usually held by registrants who are taking some time away from practice. A CDHO registrant with an Inactive certificate of registration cannot practise dental hygiene in Ontario.

CDHO Registrant