The DANB Certified Orthodontic Assistant COA exam covers evaluation, radiation health and safety, orthodontic procedures, patient management, and infection control protocols. Registered candidates answer a total of 215 questions during the testing session. The assessment features a duration of 165 minutes and requires a minimum passing scaled score of 400 on each component exam.
Candidates seeking the COA credential include dental assistants with approved work experience, graduates of CODA-accredited programs, or professionals holding current CDA certification who perform orthodontic assisting duties.
Carefully review the official candidate handbook and all exam outlines before your test date. Utilize approved study materials, instructional guides, and practice tests for the ICE and OA components to prepare for answering the 215 total questions within the strict 165 minutes duration limit provided by the testing center.
This specific domain focuses on evaluation procedures within orthodontic and dental assisting settings, ensuring accurate assessment methods are properly applied during all routine clinical examinations and patient consultations.
This domain covers radiation health and safety protocols, including exposure protection, operational safety measures, and regulatory compliance standards required for safely handling dental radiology equipment in professional clinical environments.
This specific domain addresses orthodontic procedures, detailed clinical steps, and chairside assistance techniques required during active patient treatments, bracket placements, wire adjustments, and appliance maintenance procedures within the dental office setting.
This extensive domain focuses on patient management and administrative duties, including effective communication methods, accurate health records maintenance, scheduling, and standard clinical office protocols for modern dental practices.
This domain covers the prevention of disease transmission in healthcare settings using standard precautions, personal protective equipment, and strict barrier controls to protect patients and dental personnel alike.
This domain focuses on the prevention of cross-contamination across all clinical contact surfaces, dental instruments, and operatory equipment by maintaining environmental hygiene and sanitation standards every single day.
This particular domain addresses the meticulous processing of instruments and medical devices through proper cleaning, ultrasonic disinfection, packaging, and high-temperature sterilization procedures to ensure absolute sterility before reuse in patient care.
This final domain covers occupational safety and administration protocols, including federal OSHA standards, chemical hazard communication guidelines, waste management policies, and workplace safety compliance rules for dental staff members.
Arrive at the test center prepared for a 165 minutes exam consisting of 215 questions. Bring required identification and check in according to test center policies.
The certification exam contains a total of 215 questions that all candidates must carefully complete within the officially allotted testing duration provided by the testing center.
Candidates must achieve a minimum passing scaled score of 400 on each component exam in order to successfully earn their professional dental assisting certification credentials today.
The official test duration is exactly 165 minutes, which provides candidates with adequate time to finish answering all sections of the test completely and carefully.
Eligibility pathways include combinations of approved work experience, education from a CODA-accredited dental assisting program, current DANB CDA certification, and current hands-on CPR, BLS, or ACLS certification.
Verified 2026-09-14
This index page was built using official DANB exam guides, candidate handbooks, and regulatory guidelines to provide structured domain information for prospective candidates.