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Relatively less penetrable by electromagnetic radiation; In radiography, radiopaque materials appear light or white on the exposed radiograph. Not allowing the passage of X rays or other forms of radiation (e.g., lead used as a shield around radioactive equipment, or radiopaque iodine isotopes used as contrast media in producing X-ray images). Impenetrable by X-rays or…

Osteonecrosis induced by radiation. It can occur in patients who have undergone radiotherapy because of a malignant process in the ear, nose, and throat (ENT) or other maxillofacial region. Necrosis (death) of tissue, most commonly bone, whose ability to heal has been markedly reduced by radiotherapy for a tumor. It is easily induced by injury…

Relatively more penetrable by electromagnetic radiation, with relatively little attenuation by absorption. In radiography, radiolucent materials appear to have shades of gray to black on radiographs. Allows the passage of X rays to a variable degree, depending upon the radiodensity of the object x-rayed. The characteristic of being partially or completely able to be penetrated…

Medical specialty directing medical imaging technologies for the diagnosis and possible treatment of diseases. The specialized branch of medicine that deals with roentgen rays and other radiant energy, as used in the diagnosis and treatment of disease. The use of radiation to diagnose disorders, e.g. through the use of X-rays or radioactive tracers, or to…

Acrylic resin guide used by the surgeon to direct placement of an implant into its proper position. It is based on the information from two‐dimensional panoramic radiographs or three‐dimensional computed tomography (CT) or digital volume tomography (DVT) images to achieve optimal implant body placement within the available bone and to preserve vital structures.    

Prosthesis that represents the position of missing teeth and dentoalveolar tissues for radiographic imaging. Structure or marking that directs the motion or positioning of something. It is used to transfer the intended position of the implant from the diagnostic cast to the patient and to record its relationship to the underlying bone.  

A radiopaque structure of known dimension or a material incorporated in, or applied to, a radiographic template to yield positional or dimensional information.  

An image generated on a sensitive surface (sensor) by a form of radiation other than visible light, specifically, an X‐ray or gamma ray picture. An image produced on film or another sensitive surface when radiation such as X-rays or gamma rays passes through an object. An x-ray image or photograph produced on photographic film or…

The relatively opaque white appearance of dense materials or substances on radiographic imaging studies. In radiology, the ability of a substance to absorb X rays. The more radiodense (radiopaque) a material, the more X rays it absorbs. Put another way, the higher the radiodensity, the fewer X rays are able to penetrate a substance. The…

Pertaining to the root of a tooth and its adjacent structures. Referring to a radicle. Related to a radicle or spinal nerve root.