Radiograph

A dental radiograph is a diagnostic image produced by directing a controlled beam of ionizing radiation through oral structures onto a digital sensor or film receptor, creating a two-dimensional representation of teeth, bone, and surrounding tissues that cannot be directly observed during a clinical examination. Common types include periapical radiographs, which capture the full length of one to three teeth including their root apices and surrounding bone; bitewing radiographs, which show the crowns and crestal bone of opposing upper and lower teeth and are primarily used for interproximal caries detection; panoramic radiographs, which provide a broad overview of both dental arches, the temporomandibular joints, and the maxillofacial complex; and cone beam computed tomography, which generates three-dimensional volumetric images for complex diagnostic and treatment planning needs.

Radiographic imaging is governed by both clinical guidelines and regulatory requirements. The ADA and the FDA jointly publish selection criteria recommending radiograph types and intervals based on patient age, risk factors, and clinical findings rather than arbitrary time-based schedules. State dental practice acts regulate who may expose radiographs and under what supervision, and radiation safety standards require equipment inspection, operator certification, and patient dose minimization through proper technique and shielding. The transition from conventional film to digital sensors has reduced radiation exposure by up to 80 percent while also enabling immediate image review, electronic storage, and simplified sharing with referring providers and insurance carriers.

Radiographs are one of the highest-volume billable procedures in dental practice and serve a dual role as both a revenue-generating service and a documentation tool that supports the necessity of downstream treatment. CDT codes differentiate radiographs by type and quantity, and submitting the correct code for the images actually exposed is essential for clean claims. Insurance plans impose strict frequency limitations on radiographic services, commonly allowing a full mouth series once every three to five years and bitewing radiographs once every six to twelve months. Billing teams must track each patient's radiograph history against their specific plan's frequency schedule to avoid submitting claims that will be denied as premature. Retaining radiographic images in the patient record also provides essential supporting documentation when payers request clinical evidence to justify treatment such as endodontic therapy, extractions, or implant placement.