For many decades, bitewing radiographs have been highly useful in caries diagnosis, especially for detecting interproximal caries. Once kV and mA levels are set (where available), it is up to the individual clinician to ensure the correct time/pulse level is selected. The clinician is also responsible for eliminating unnecessary retakes and minimizing radiation exposure to the patients under their care. One of the most common errors when exposing bitewing images is failing to prevent horizontal overlapping. Central Ray Angulation - Welcome to Dental Radiography X-ray beam should be directed perpendicular to the tooth and the receptor. Detector placement errors often occur because the receptor is uncomfortable. Increasing the vertical angulation by at least 10 degrees and repositioning the film to prevent bending will alleviate this distorted image. X-Rays Radiographs - Home | American Dental Association Slanting of occlusal or incisal plane: In an ideal radiograph, the occlusal plane should be parallel to the margin of the film while in this case the occlusal surface is slanting or at an angle to the margins. #1 Under/Over Exposure The number one reason for poor radiographsExposure. When this alignment is not observed, a cone-cut occurs. When using the paralleling technique and receptor holders, the vertical angulation is dictated by the holding device to direct the x-ray beam perpendicular to both the receptor and teeth. The most popular correction method is the installation of braces or overlapping with veneers. When the receptor is not placed perpendicular to the occlusal plane, the occlusal plane will appear slanted or diagonal on the recorded image. In contrast, when using the bisecting angle technique, the beam is perpendicular to the plane that bisects or divides the angle formed by the teeth and the receptor. FIGURE 7. How to Take Dental X-Rays | Dental Assistant Tips - Charter College In contrast, Kamburoglu et al6 reported in 2012 that intraoral bitewing images were better for diagnosing interproximal caries compared with the extraoral bitewing and panoramic images. Unlike light, however, x-rays have higher energy and can pass through most objects, including the body. AC units may not provide exposures as consistent as constant potential units at these very short exposure times.

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