Back To Top


Orthodontics is the branch and specialty of dentistry concerned with the supervision, guidance, and correction of the growing or mature dentofacial structures and the diagnosis, prevention, and treatment of any abnormalities associated with these structures.

The NDSE in orthodontics tests a candidate’s knowledge and clinical competence in orthodontics at the specialty level in Canada.

Format and Content

The examination will be administered in two, three-hour parts of equal weight.

The examination consists of a mix of single and multiple answer multiple-choice questions that assess knowledge, application of knowledge, diagnosis, and clinical decision-making.

Canadian orthodontists are required to have broad knowledge and skills in seven domains. The blueprint found in the NDSE Protocol indicates the domains and approximate percentage of questions in each domain.

References and Resources