January 5, 2026 — Dental X-rays aren’t just routine; they should be *necessary*. New guidelines from the American Dental Association emphasize a shift toward minimizing radiation exposure for both patients and practitioners, confirming imaging should only be ordered when it directly impacts diagnosis and treatment.
Updated Dental Imaging Guidelines Prioritize Patient Safety
Table of Contents
The ADA’s first major update to radiography recommendations in over a decade addresses both traditional X-rays and advanced cone-beam computed tomography (CBCT) scans.
- The recommendations stress a thorough clinical exam *before* any imaging is considered.
- Updates cover specific scenarios for detecting cavities, managing gum disease, and various dental specialties.
- The guidelines endorse the ALARA principle—As Low As Reasonably Achievable—for radiation exposure.
- Previous recommendations regarding thyroid and abdominal shielding have been updated based on recent findings.
Published jointly in the January issue of The Journal of the American Dental Association and online ahead of print in Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, these recommendations represent a significant step toward evidence-based imaging practices.
What’s the right approach to dental X-rays? “You wouldn’t get an X-ray of another part of your body unless the doctor believed there was reason to order one after an examination,” explains Erika Benavides, D.D.S., Ph.D., clinical professor at the University of Michigan School of Dentistry. “Similarly, dental X-rays should be ordered only after first examining the patient’s medical and dental histories, prior X-ray images, and current clinical exam findings.”
The recommendations, developed by an expert panel from the ADA Council on Scientific Affairs, have also received endorsement from the American Academy of Oral and Maxillofacial Radiology.
Caries and Periodontal Disease: A Targeted Approach
For detecting cavities, the panel offers specific guidance for different tooth surfaces—anterior, posterior, occlusal, root, and smooth—emphasizing that the choice between bitewing and periapical views should be based on clinical judgment and anatomical factors.
When it comes to gum disease, radiographic evaluation remains crucial for diagnosis and establishing a baseline. However, the frequency of X-rays should be tailored to the patient’s clinical findings and response to treatment. A 2D full-mouth series, combined with a clinical exam, is considered the gold standard for evaluating periodontal disease. Currently, there’s no evidence to support the routine use of CBCT for managing gum disease, except in complex cases requiring detailed treatment planning.
Imaging Across Dental Specialties
The updated guidelines also address imaging protocols for various specialties, including:
- Orthodontics: Panoramic radiographs are recommended for monitoring tooth eruption and assessing root alignment during treatment.
- Pediatrics: Radiographs should be prescribed judiciously, with a focus on dose-reduction methods for children and young adults.
- Oral Surgery: Panoramic radiography is useful for evaluating third molars and assessing potential abnormalities.
- Temporomandibular Joint Disorders (TMD): Panoramic imaging can rule out gross bone abnormalities, but may not be sufficient for a definitive diagnosis.
- Dental Implants: Panoramic radiography is suitable for initial assessment, while CBCT is recommended for presurgical planning and implant placement.
- Endodontics: Intraoral 2D radiographs are the primary imaging modality for initial evaluations, with CBCT considered when further detail is needed, using the smallest possible field of view.
These recommendations build on previous work, including a 2024 set of guidelines that determined thyroid and abdominal shielding during dental imaging is no longer necessary as routine practice, aligning with recommendations from the American Academy of Oral and Maxillofacial Radiology issued in 2023.
“Dental X-rays are safe,” Dr. Benavides assures. “In some cases, a dental X-ray delivers less radiation than a single day of the natural radiation we are all exposed to just by living in the world. Yet it is important to follow the ALARA principle to minimize exposure over a patient’s lifetime and only order X-rays when clinically necessary.”
The ADA and AAOMR encourage dentists and their teams to review the complete recommendations and discuss any questions with their patients.
To view the complete recommendations, visit JADA.ADA.org.
