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The College of Registered Dental Hygienists (CRDHA) is the regulatory body for the dental hygienist profession in Alberta. Its authority is granted by the Government of Alberta under the Health Professions Act (HPA or the Act). The HPA is the legislative framework through which regulatory colleges partner with government to create accountability mechanisms in the Alberta health system. Regulatory colleges are not post-secondary institutions.

The Act delegates professional self-governance to Alberta's 28 regulatory colleges and establishes standard processes for registration, continuing competency, complaints and discipline. It also requires provision of professional standards of practice and codes of ethics. 

Through these processes, the Act ensures that health professionals maintain high standards of competency, safety and ethics, and provide Albertans with safe, high quality care.

A major responsibility of professional colleges is to investigate complaints about regulated members and to impose disciplinary sanctions if appropriate.

The HPA requires that colleges carry out their governance responsibilities in a manner that protects and serves the public interest. This is unlike professional associations, which usually work to advance the interests of a profession or its members. 

The CRDHA's mandate is to ensure Alberta dental hygienists have the knowledge, skills, attitude, and judgment to provide safe, effective, ethical and beneficial oral healthcare services to the Alberta public.