Understanding the RHS Dental Assisting Exam: What Every Future Dental Assistant Should Know in 2025
The Radiation Health and Safety exam is a key credential for dental assistants who want to work with X rays. The Dental Assisting National Board creates and updates the exam. Many states require the RHS before a dental assistant can take radiographs. Employers also look for this credential because it shows skill, safety, and readiness to work with patients right away.
The RHS exam tests how well you understand radiation safety. You study how X rays work. You learn how to protect patients from unnecessary exposure. You learn how to protect yourself while using digital sensors and film systems. The exam checks that you follow state and federal rules. It also reviews how to position patients correctly, how to avoid image errors, and how to fix poor radiographs.
The exam includes questions about digital radiography. You learn how to use sensors, how to adjust settings, and how to store images correctly. The exam covers film processing as well. You learn about common mistakes such as cone cutting and incorrect angulation. The RHS also tests your ability to keep equipment clean, maintain barriers, and follow infection control procedures around radiographic rooms.
Many dental assistants treat the RHS as their first professional step. Passing the exam helps you stand out when applying for jobs. Dentists often look for assistants who can take X rays right away. Programs such as NYSMDA in Queens prepare students for the exam. Students practice positioning, safety rules, and step by step radiographic procedures so they feel ready on test day.
Strong RHS training improves patient care. It helps you take clear images, protect patients, reduce retakes, and support dentists in diagnosing problems. The exam brings confidence, responsibility, and a clear path into dental assisting.
High value source links
https://www.danb.org
https://www.danb.org/exams/rhs-exam
https://www.ada.org/resources/careers-and-education
https://www.nysmda.com
