When this occurs, the interpretation of caries is difficult at best. Many manufacturers of x-ray heads provide pre-sets for their x-ray generators that allow the time/pulse level to be selected depending on patient size and area being imaged. Little details, little errors mar and blemish X-rays Tips and Tricks for Bitewing X-Rays - YouTube Principles of Accurate Image Projection Summary. Crimp marks or nail like curved dark lines results from sharp bending of the film while placing the film in the patientmouth. This X-ray beam was angled too much to the distal. It is particularly important if a patient has a shallow palate or floor of mouth to employ this method, both to avoid discomfort and to avoid distortion of the image. Technique & Projection errors c. Projection errors PID alignment artifact If the PID is misaligned and the x-ray is not centered over the film, a partial image is seen on the resultant radiograph, this partial image is called cone-cut. Damaged plates should be replaced when the artifacts interfere with the production of diagnostic images. Your email address will not be published. It appear as a clear area with curved outline. Foreshortening or shortening of the teeth and the surrounding structures can also result from improper vertical angulation. From Dimensions of Dental Hygiene. Abdinian M, Razavi SM, Faghihian R, Samety AA, Faghihian E. Accuracy of digital bitewing radiography vs different views of digital panoramic radiography for detection of proximal caries. Errors of dental radiography - SlideShare 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. To correct a cone-cut error, the beam should be re-centered toward the area of non-exposure. X-ray beam attenuated behind the film. When exposing bitewing radiographs, the top edge of the receptor may come in contact with the palatal gingiva or curvature of the palate or the lingual aspect of the mandible. The molar image should show the distal of the second premolar and completely include the terminal molars on each side of the patients mouth. Perhaps the most common error is the overlapping of contacting surfaces (see Radiograph 1). Required fields are marked *. Low density image. - A narrow arch requires the film to be placed more towards the posterior of the mouth. FIGURE 12. What causes overlapping in a dental x-ray? - Answers it becomes clinically visible. A quality dental sensor sensor holder can help ensureyour staff are taking the best quality images possible. If the beam is at a lateral angle to the film while trying to take bitewing x-rays, the crowns of the teeth may appear to be overlapping and this will obscure the contacts. Another technical error that occurs occasionally is when the receptor yields no image. Cause of Slanting of occlusal plane: It results from improper placement of the film in the patients mouth. An in vitro study conducted by Abu El-Ela et al4 compared digital images for the detection of interproximal caries using photostimulable receptors, complementary metal oxide semiconductor receptors, and a panoramic X-ray unit.
