2007– Dental hygiene achieved independence. The Dental Hygiene Act (1991) was amended allowing dental hygienists the freedom to provide their services outside the dental office.
1993 – The College of Dental Hygienists of Ontario became the governing body for Ontario dental hygienists.
1988 – ODHA celebrated 25 years.
1963 – The ODHA formed.
In 1947, Ontario became the first province to legally recognize dental hygiene with the amendment of the Dentistry Act (1911). The first dental hygiene program in Canada was offered in September 1951 at the University of Toronto, Faculty of Dentistry with five students registering for the 2-year program. Click to read a detailed history.