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Intraoral&Extraoral
| Term | Definition |
|---|---|
| Augulation | Alignment of central ray of x-ray beam in horizontal and vertical planes. |
| Bisecting technique | Intraoral technique of exposing dental images. |
| Bitewing | Type of image used for interproximal examination. |
| central ray | X-ray at center of beam. |
| contract area | Area of the mesial or distal surfaces of a tooth that touches an adjacent tooth in the same arch. |
| crestal bone | Coronal portion of alveolar bone found between the teeth. |
| developmental disability | Impairment of mental or physical functioning that usually occurs before adulthood and lasts indefinitely. |
| diafnostic quality | Referring to images with the proper structures and necessary density, contrast, definition, and detail for diagnostic purposes. |
| interproximal | Between two adjacent surfaces. |
| intersecting | Cutting across or through. |
| long axis of the tooth | imaginary line dividing the tooth longitudinally (vertically) into two equal halves |
| occkusal technique | Used to examine large areas of the upper or lower jaw. |
| parallel | Moving or lying in the same plane, always separated by the same distance. |
| paralleling technique | Intraoral technique of exposing periapical and bitewing images. |
| perpendicular | Intersecting at or forming a right angle. |
| physical disability | Impairment in certain function(s) of the body, such as vision, hearing, or mobility. |
| positioning instruments | Intraoral device used to position and hold the film, sensor, or PSP. |
| right angle | Angle of 90 degrees formed by two lines perpendicular to each other. |
| Cephalostat | Special device that allows the operator to easily position both film and patient. |
| computed tomography | Radiographic technique that produces images or “slices” of one layer or section of the specific areas. Also referred to as computed axial tomography (CAT scan). |
| cone beam computed tomography | A three-dimensional digital imaging method that uses a cone-shaped beam of radiation that rotates around the patient. |
| Digital panoramic units | A filmless method of recording a panoramic image and displaying it by using an electronic sensor and a computer to process and store the image. |
| exposure controls | Feature that allows the operator to adjust the milliamperage and kilovoltage settings. |
| Extraoral images | Images taken when large areas of the skull or jaw must be examined. |
| Extraoral imaging | An image of the teeth and bones made by placing the film or cassette against the face or the head and projecting the x-rays from the opposite side. |
| field of view | The area that can be shown when performing imaging procedures. |
| focal trough | Imaginary three-dimensional horseshoe-shaped zone used to focus panoramic radiographs. |
| Frankfort plane | Imaginary plane that passes through the top of the ear canal and the bottom of the eye socket |
| midsagittal plane | Imaginary line that divides the patient’s face into right and left sides. |
| temporomandibular joint | Joint on each side of the head that allows movement of the mandible. |
| three dimensional digital imaging | An image that demonstrates the anatomy in three dimensions. |