exposure to ionizing radiation. Correcting this error on bitewings can usually be achieved by inclining the tubehead in a more mesial or distal direction. Failure to do this will cause overlapping of proximal contacts (Figure 16-13). While using the paralleling technique, foreshortening can occur when the angulation of the x-ray beam is greater than the long axes plane of the teeth. Tooth Contouring - Dentist Abilene, TX | Southwest Dental Group Use of this device will be discussed throughout the procedure. The overall quality of panoramic radiographs can be greatly improved when particular attention is paid to initial patient preparation and positioning. Conversely, lengthened im-ages occur because there is not enough vertical angulation. An abnormal dental X-ray result refers to an X-ray that shows an unexpected or unusual . Move it towards the posterior portion of the mouth while still keeping the film as parallel as possible to the long axis of the tooth. When your jaws . The best was to find out if your x-ray generator is going bad is to call the manufacture and get a tech to come look at your unit. This error also results in a lighter image and reversal of the image. Increasing the vertical angulation during the bisecting technique will again intentionally foreshorten the apices of the tooth. The x-ray beam is attenuated by the lead foil before striking the film. An excessive overlap between the top and bottom teeth can impact your ability to articulate clearly, causing a lisp or other speech problem. The buccal object rule may be used to help correct the angulation. This causes the embossed pattern on the foil, a herringbone or diamond effect, to appear on the processed film. Placement of the bite block and receptor in the correct position first and then having the patient slowly bite to maintain the placement is the preferred and most effective approach. This incorrect placement of the film can be improved by adjusting the film position more anteriorly and toward the midline. Many people have a slight overbite. Key Points. Invisible Risks of X-Rays [Are dental x-rays safe?] In the case of periapical radiographs, improper vertical angulation can produce image foreshortening and elongation that misrepresents the actual length of all structures including the teeth. This placement allows for undisturbed reproduction of the retromolar area.

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