Dental X-rays are a routine part of modern dental care but taking them is not simply a matter of learning where to position a sensor and pressing a button. In Virginia, dental assistants must meet specific radiation-certification requirements before they may place or expose dental radiographs.
For many dental assistants, the most practical route involves completing appropriate radiation-safety education and passing the Dental Assisting National Board Radiation Health and Safety exam, commonly called the DANB RHS exam.
Career First Institute offers a standalone dental radiology and DANB RHS preparation course in Lorton, Virginia, separate from its complete Dental Assistant Program. The course is intended for students and working dental assistants who want focused radiology education and structured preparation for the RHS examination.
This guide explains what Virginia requires, what the RHS exam covers, and how to begin the process.
Quick Answer: How Do You Get Dental X-Ray Certified in Virginia?
To qualify to expose dental radiographs in Virginia, a dental assistant must satisfy one of the radiation-certification pathways recognized by the Virginia Board of Dentistry.
One available pathway involves:
- Completing the required Radiation Health and Safety review education through the applicable recognized provider;
- Applying for the DANB Radiation Health and Safety exam;
- Passing the DANB RHS exam; and
- Maintaining documentation showing that the applicable Virginia requirements have been satisfied.
What Is Dental Radiology?
Dental radiology is the use of radiographic imaging to help dental professionals examine teeth, supporting bone, roots and surrounding oral structures that may not be fully visible during a clinical examination.
Common types of dental images include:
– Bitewing radiographs;
– Periapical radiographs;
– Full-mouth radiographic series;
– Occlusal images;
– Panoramic radiographs;
– Cephalometric images; and
– Cone-beam computed tomography, commonly called CBCT.
Dental assistants may help prepare patients, position imaging equipment and receptors, follow radiation-safety procedures, capture images and identify technical errors. The dentist remains responsible for diagnosing conditions and interpreting the images clinically.
Accurate radiographs matter. A poorly positioned sensor, incorrect horizontal angle or patient movement can produce an image that is not diagnostically useful. This may require a retake, causing unnecessary radiation exposure, wasted time and additional patient discomfort.
That is why quality dental radiology training focuses on both **technical accuracy and patient safety**.
Do Dental Assistants Need X-Ray Certification in Virginia?
Yes. A dental assistant cannot legally place or expose dental radiographs in Virginia merely because a dentist or another employee showed the assistant how to operate the equipment.
Virginia Administrative Code 18VAC60-30-80 provides the radiation-certification rules for Dental Assistants I and II. Under the regulation, assistants must satisfy one of the state’s recognized pathways before exposing dental radiographs.
This distinction is important because several terms are frequently and incorrectly used as if they mean the same thing:
– A dental assisting school completion certificate;
– A dental radiology course certificate;
– Passing the DANB RHS exam;
– Becoming a Certified Dental Assistant;
– Receiving authorization to expose radiographs in Virginia.
These are related, but they are not automatically interchangeable.
Before enrolling in any dental X-ray course, ask the school to explain precisely:
– What the course teaches;
– Whether it is an exam-preparation course or an approved regulatory pathway;
– Which examination students are expected to take;
– Whether the examination fee is included;
– What documentation students receive;
– What additional steps are needed under Virginia law; and
– Whether the school assists students with the DANB application process.
A vague answer is a warning sign. Radiation compliance is not the place for creative wording.
What Is the DANB RHS Exam?
The Radiation Health and Safety exam is administered by the Dental Assisting National Board. It measures knowledge related to dental radiographic techniques, radiation protection and infection prevention.
The RHS exam is also a component of DANB’s National Entry Level Dental Assistant and Certified Dental Assistant certification programs. However, passing the RHS exam by itself does not mean that a person has earned full CDA certification.
DANB currently states that there are no prerequisite eligibility requirements simply to apply for the standalone RHS exam. Candidates must still comply with their state’s separate requirements governing radiography duties.
The current RHS exam contains:
– 75 multiple-choice questions;
– 60 minutes of testing time;
– Computer-adaptive testing;
– In-person testing-center and online-proctored options; and
– A 60-day testing window after application approval.
DANB’s published exam information confirms the question count, testing time and testing options.
Fees and testing policies may change, so applicants should verify the current amount directly with DANB before submitting an application.
What Subjects Are Covered on the DANB RHS Exam?
The RHS examination is divided into three major content areas.
- Purpose and Technique — 50%
This is the largest portion of the examination. It covers topics such as:
– Purposes of different dental images;
– Dental and anatomical landmarks;
– Patient preparation;
– Patient positioning;
– Sensor and receptor placement;
– Paralleling and bisecting-angle techniques;
– Panoramic imaging;
– Horizontal and vertical angulation;
– Image quality;
– Common positioning errors;
– Correcting overlapped or distorted images;
– Managing patients with anxiety or physical limitations;
– Image orientation and mounting; and
– Legal requirements for storing and transferring dental images.
- Radiation Characteristics and Protection — 25%
This section may include:
– Basic radiation physics;
– X-ray production;
– Kilovoltage, milliamperage and exposure time;
– Primary, secondary and scatter radiation;
– Radiation biology;
– Tissue sensitivity;
– Radiation measurement;
– Operator protection;
– Patient protection;
– Beam restriction and filtration; and
– Methods for reducing unnecessary exposure.
- Infection Prevention and Control — 25%
This section focuses on preventing contamination during radiographic procedures. Topics may include:
– Hand hygiene;
– Personal protective equipment;
– Clinical contact surfaces;
– Barriers;
– Sensor and receptor handling;
– Cleaning and disinfection;
– Processing contaminated equipment;
– Preventing cross-contamination; and
– Following standard precautions.
DANB’s current examination outline assigns 50% of the exam to purpose and technique, 25% to radiation characteristics and protection, and 25% to infection prevention and control. The current exam focuses on digital radiography rather than conventional film-based concepts
Step-by-Step: Preparing for Dental X-Ray Certification in Virginia
Step 1: Confirm Which Virginia Pathway Applies to You
Start by reviewing the current Virginia radiation-certification regulation.
Your route may depend on your previous education, credentials and training. Someone who completed radiology education through a CODA-accredited program may follow a different pathway from an entry-level assistant using the DANB RHS route.
Do not assume that a course title containing the words “radiology,” “X-ray” or “certification” automatically satisfies the regulation.
Step 2: Enroll in Focused Dental Radiology Training
A structured course can help students understand the material in a logical sequence rather than attempting to memorize disconnected facts.
Career First Institute offers a standalone dental radiology and DANB RHS preparation course at:
Career First Institute
9360 Richmond Highway
Lorton, Virginia 22079
The separate course may be appropriate for:
– Current dental assistants who need radiology training;
– Dental office employees who were trained informally but need structured exam preparation;
– Students who completed a dental assisting course without sufficient RHS preparation;
– Career changers entering dental assisting;
– Assistants relocating to Virginia;
– Students preparing to retake the RHS exam; and
– Dental practices seeking consistent radiology education for staff members.
Current course schedules, tuition, registration dates and examination arrangements should be confirmed directly with Career First Institute.
Step 3: Learn the Concepts—Do Not Memorize Only Practice Questions
Practice questions can be useful, but memorizing answer patterns is not enough.
The RHS exam may present concepts in unfamiliar ways. A student who understands why an image has overlapped contacts can reason through a question. A student who memorized only one example may struggle when the wording or image changes.
Effective preparation should include:
– Understanding radiographic terminology;
– Reviewing dental anatomy and landmarks;
– Connecting positioning errors to their causes;
– Practicing radiation-safety calculations and concepts;
– Learning infection-control sequences;
– Studying the official exam domains; and
– Explaining why an answer is correct or incorrect.
DANB publishes study-guide plans based on its exam outlines and recommends spacing study sessions, using active learning and reviewing mixed content before the examination.
Step 4: Apply for the DANB RHS Exam
Candidates apply through DANB and should use their legal name exactly as it appears on their accepted government-issued identification.
After approval, candidates generally receive a testing window during which they must schedule and complete the examination. The current DANB application materials provide a 60-day window following approval.
Before applying, verify:
– Your name matches your identification;
– Your contact information is correct;
– You understand current testing policies;
– You know whether you will test online or in person;
– Your computer and room meet online-proctoring requirements, when applicable; and
– You are prepared to schedule within the authorized period.
Step 5: Take the Exam
During the exam, manage your time carefully. With 75 questions in 60 minutes, candidates have less than one minute per question on average.
Do not spend several minutes fighting with one difficult question. Read each question carefully, identify what it is actually asking and eliminate clearly incorrect choices.
Watch for terms such as:
– Best;
– First;
– Most appropriate;
– Least likely;
– Primary cause; and
– Safest action.
These words change what the question is testing.
Step 6: Keep Your Documentation
After completing the applicable education and passing the examination, retain copies of:
– Course-completion records;
– Examination results;
– DANB-issued documentation;
– Payment and application confirmations; and
– Any documents required by an employer or the Virginia Board of Dentistry.
A dental office may request proof before assigning radiographic duties. Keep digital and paper copies. “I passed it a while ago” is not documentation.
How Long Does Dental Radiology Training Take?
The length of a dental radiology or DANB RHS preparation course depends on the school, course format and amount of hands-on instruction.
A short review may help an experienced assistant refresh existing knowledge. A beginner may need more extensive instruction in anatomy, positioning, radiation physics, infection control and error correction.
When comparing programs, do not choose based only on which course is shortest. Ask whether the program provides enough time to understand the actual exam domains and practical responsibilities.
The fastest course is not a bargain when it leaves you unprepared.
Can the DANB RHS Exam Be Taken Online?
DANB currently offers both in-person testing and online remote proctoring for the RHS exam. Online testing requires a compatible computer, reliable internet access, a webcam, a microphone and a testing space that meets the proctor’s requirements.
Online testing may be convenient, but it is not automatically easier. Technical problems, an unstable connection or an unsuitable testing environment can interfere with the appointment.
Candidates should complete the required system check before test day and read the latest remote-proctoring policies carefully.
Is the RHS Exam the Same as Becoming a Certified Dental Assistant?
No.
The RHS exam is one component examination used in several DANB credentials. Full Certified Dental Assistant certification generally involves additional examinations and eligibility requirements.
A person may pass the standalone RHS exam without having completed every requirement for CDA certification. Conversely, a dental assistant should not advertise herself or himself as a DANB Certified Dental Assistant unless the complete credential has actually been earned and remains current.
Accurate credentials protect both the employee and the dental practice.
Why Dental X-Ray Skills Matter to Employers
Radiographs are frequently used during:
– New-patient examinations;
– Emergency appointments;
– Periodontal evaluations;
– Restorative treatment;
– Root-canal treatment;
– Oral surgery;
– Orthodontic treatment;
– Implant planning; and
– Routine preventive care.
An assistant who can capture diagnostically useful images efficiently can help keep appointments on schedule and reduce unnecessary retakes.
Employers may also value assistants who understand:
– Patient communication;
– Radiation protection;
– Infection control;
– Digital sensor care;
– Image-management software;
– Common positioning errors; and
– When to ask a dentist or experienced team member for assistance.
Certification is the baseline. Reliable performance is what makes the skill valuable in an actual dental office.
Looking for a Dental Radiology Course Near Lorton, Virginia?
Career First Institute serves students from Lorton and surrounding Northern Virginia communities, including:
– Woodbridge;
– Fort Belvoir;
– Springfield;
– Newington;
– Alexandria;
– Mount Vernon;
– Occoquan;
– Burke;
– Fairfax Station; and
– Nearby areas of Fairfax and Prince William counties.
The school offers a standalone dental radiology and DANB RHS preparation course for students who do not need to enroll in the entire dental assisting program.
Training locally can make it easier to attend classes, ask instructors questions and prepare with a clear understanding of Virginia’s requirements.
To request information about upcoming course dates, tuition or registration, contact Career First Institute at **571-348-0109** or use the inquiry form on the Career First Institute website.
Questions to Ask Before Choosing a Dental X-Ray Course
Before enrolling, ask the school:
- Is this a standalone dental radiology course?
- Does the course specifically prepare students for the DANB RHS exam?
- Does the curriculum follow the current DANB examination outline?
- Does the program include digital-radiography instruction?
- Are practice questions or mock examinations included?
- Is hands-on positioning instruction provided?
- Is the DANB examination fee included in tuition?
- Does the school help students understand the application process?
- What documentation is issued after course completion?
- What additional Virginia requirements must be completed?
A reputable school should answer these questions directly.
Frequently Asked Questions
Do dental assistants need X-ray certification in Virginia?
Dental Assistants I and II must satisfy one of Virginia’s recognized radiation-certification pathways before placing or exposing dental radiographs.
Can I take the DANB RHS exam without completing a full dental assistant program?
DANB currently lists no prerequisite eligibility requirements for applying to the standalone RHS exam. However, Virginia’s authorization requirements are separate, and the applicable education and examination pathway must still be satisfied.
Does passing the RHS exam make me a Certified Dental Assistant?
No. RHS is a component exam. Full CDA certification has additional examination and eligibility requirements.
How many questions are on the DANB RHS exam?
The current RHS exam contains 75 multiple-choice questions and allows 60 minutes for testing.
What is the most heavily tested RHS subject?
Purpose and Technique represents 50% of the current exam. Radiation Characteristics and Protection and Infection Prevention and Control each represent 25%.
Is the exam based on film or digital radiography?
The current DANB outline states that the RHS exam tests digital-radiography concepts and has not tested conventional film-based concepts since July 2022.
Can I take a dental radiology course separately?
Yes. Career First Institute offers a standalone dental radiology and DANB RHS preparation course separate from its complete dental assistant training program.
Where is Career First Institute located?
Career First Institute is located at 9360 Richmond Highway, Lorton, Virginia 22079. The school is accessible to students from Lorton, Woodbridge, Fort Belvoir, Springfield, Alexandria and other nearby Northern Virginia communities.
Take the Next Step Toward Dental Radiology Certification
Dental radiology is one of the most practical skills a dental assistant can develop, but it must be learned correctly.
The process begins with understanding Virginia’s requirements, completing appropriate training, preparing for the DANB RHS examination and keeping accurate documentation.
Career First Institute’s standalone dental radiology and DANB RHS preparation course gives students a focused option without requiring enrollment in the complete Dental Assistant Program.
For information about the next class, registration requirements or current tuition, contact Career First Institute at 571-348-0109 or submit an inquiry through the school’s website.
Start with proper training. Prepare seriously. Then walk into the examination knowing why the answers are correct not merely hoping that they look familiar.
*Regulations, exam fees, exam formats and credentialing requirements may change. Students should confirm current information with the Virginia Board of Dentistry and the Dental Assisting National Board before enrolling or applying.