COA Certified Orthodontic Assistant VIP Practice Exam

COA — The Certified Orthodontic Assistant (COA) credential is issued by the Dental Assisting National Board (DANB). The computer-based exam consists of approximately 60 scored questions covering chairside orthodontic procedures, dental materials, infection control, radiography, patient education, and administrative functions. Candidates must pass with a scaled score of 75 or higher.