DANB Radiation Health and Safety (RHS) Dental Practice Test

DANB offers multiple eligibility pathways. The most common is graduation from a dental assisting program accredited by the Commission on Dental Accreditation (CODA). Alternatively, candidates may qualify with a high school diploma (or equivalent) and relevant work experience, or by holding current CPR/BLS certification from a DANB-accepted provider along with work experience. It is crucial to verify the most current and specific requirements directly on the official DANB website, as they are subject to change.

The DANB RHS exam is recognized or required by a majority of state dental boards as proof of competency to legally operate dental X-ray equipment. In many states, passing the RHS exam is a mandatory step for dental assistants to obtain a radiography permit or license. Always confirm with your specific state's dental board for precise regulatory requirements, as they have the final authority on licensure.

The RHS exam is a computer-based test consisting of 125 multiple-choice questions. Candidates are allotted 90 minutes to complete the exam. The questions are drawn from the five core domains outlined in the official exam blueprint, with a focus on application and analysis in clinical scenarios.

DANB uses a scaled scoring system, and the passing score is 400. If you do not pass, you may retake the exam. DANB allows a maximum of four attempts in a 12-month period, with a mandatory 90-day waiting period between the second and third attempts, and between the third and fourth attempts. A new application and fee are required for each retake.

Yes, the DANB RHS certification must be renewed annually. To maintain the credential, certificants must earn a minimum of 12 Continuing Dental Education (CDE) credits each year, with at least 6 credits specifically in radiation health and safety. Certificants must also maintain a current CPR/BLS certification from a DANB-accepted provider and submit the appropriate renewal fee.