Types of Dental X-rays: Intra-oral and Extra-oral Extraoral X-rays The commonly used extra-oral x-rays are the Panoramic, Cephalometric and Cone beam CT scan. Panoramic X-rays show all the structures in the mouth on a single image, including upper and lower teeth, jaw joints, nerves, sinuses and supporting bone.It provides an overview of the jaws and is useful for assessing tooth development, jawbone abnormalities, and help in planning for dentures, braces, or implants. Cephalometric X-rays show the entire head from the side, primarily used to assess skeletal and dental relationships of the skull and face.They aid in diagnosing malocclusion, craniofacial anomalies, and skeletal deformities, as well as monitoring treatment progress and assessing facial growth. Orthodontists often use cephalometric X-rays to plan treatment. Cone beam CT scan capture 3D dental X-rays of the teeth, jaws, joints, nerves and sinuses. These X-rays can also detect tumors or facial fractures.Surgeons use dental CT scans to check the height, width and location of your jawbone before dental implant placement.