The Dental Assisting National Board (DANB) is recognized by the American Dental Association as the national certification board for dental assistants. DANB exams and certifications are recognized or required by 38 states and the District of Columbia. DANB is a member of the Institute for Credentialing Excellence. DANB's Certified Dental Assistant (CDA) and Certified Orthodontic Assistant (COA) certification programs are accredited by the National Commission for Certifying Agencies (NCCA).