which of the following round be the best reply? ANS: (1). The cause of an excessive margin of receptor edge (which appears as a black band) on a nondiagnostic periapical image is When the distal surfaces of the canines are not visible on a premolar bite-wing film, the solution is to: Position the anterior edge of the film at the midline of the mandibular canine. not unwrapping the film in a room with white light. For each numbered anatomic landmark, select the BEST associated radiographic description. 38. Faster film speed reduces radiation exposure to the patient. A periapical image of the maxillary right molar area is needed, but patient has a shallow palate, and the first image taken misses the apices of the teeth. the thyroid collar is recommended for what type of exposure? make certain that no more than 1/8 inch of the receptor edge extends beyond the incisal-occlusal surfaces of the teeth. (2). (1). Avoiding Errors in Digital Radiography - Dimensions of Dental Hygiene The low energy photon changes direction. This bitewing image has a clear diagonal area in the right corner, thus preventing the display of diagnostic information from the maxillary second molar. incorrect vertical angulation. BThe atom gains an electron and will have a positive charge. Which one is the EXCEPTION? to shield the film from secondary backscattered radiation. In the molar exposure, there should be no overlap of the distal surface of the maxillary first molars and the mesial surfaces of the second molars (Figure 2). 40. Which statement BEST describes changes to the atom during the ionizing process? Detector placement errors often occur because the receptor is uncomfortable. 6. For each numbered anatomic landmark, select the BEST associated radiographic description. A radiographic image will have increased density if the operator. Full mouth set of radiographs including bitewings. Another receptor placement error is not positioning the detector to image the distal of the canine (Figure 7). "Overlapped Contacts" Incorrect Horizontal Angulation With Paralleling or Bite Wing Technique Digital Sensors or Film Incorrect Horizontal Angulation May occur with Digital Sensors or Film. Correcting this error on bitewings can usually be achieved by inclining the tubehead in a more mesial or distal direction. what cells would be the most sensitive to x-ray? phalangioma Which of the following is the receptor that captures computerized images as discrete units of information? Flashcards - chapter 16 - FreezingBlue C. 110 or 220 line voltage is reduced to 3 to 5 volts. The triangular sail on a boat has a height of 4.1 m and a base of 6.15 m. What is the area of the sail? In Figure 9, the image displays more of the maxillary arch than the mandibular arch. (3). turning off the safelight and unwrapping the films in a pitch-black room. Course Hero is not sponsored or endorsed by any college or university. remain in home. (T/F 2 parts). Contemporary dental radiography continues to incorporate new techniques and technology for the detection of anatomical changes suggestive of disease or healing.7 Regardless of technology, clinicians must use sound radiographic principles and strive to improve their skills in order to consistently produce diagnostically useful images while minimizing patient Correcting horizontal angulation will open the contacts. The contacts on your dental image are overlapped, which of the following would you correct when retaking the image? the teeth being imaged must be firmly in contact with the bite-block. Quiz 20: Exposure and Technique Errors | Quiz+ 51. 12. Remember, a text is . 3/4 inch increases the chances that the apices will not appear; increasing the exposure time will not improve the quality of the image if the receptor is not correctly placed; directing the beam through interproximal spaces is involved with horizontal angulation. It happens. Which ingredient of the developing solution in the manual processing of x-ray films is alkaline and aids in the softening of the emulsion? (2). C. Direct the xray beam through the interproximal regions. a dental image reveals a radiolucent area on the side of the root, you cannot see the lamina dura. DThe atom loses an electron and will have a positive charge. The first statement is false, and the second statement is true. To correct this error the clinician must increase the vertical angulation. Platin E, Janhom A, Tyndall D. A quantitative analysis of dental radiography quality assurance practices among North Carolina dentists. D. Kinetic energy is converted to x-ray energy and heat. A thin radiolucent line appears on the film with film creasing. (2). Radiation exposure is not of concern when it occurs in small doses. To prevent underexposure, check and increase exposure time, kilovoltage, or milliamperage as needed. ____- speed film is currently the fastest intraoral film available. Intraoral Imaging: Basic Principles, Techniques and Error Correction Vertical angulation controls the length of the recorded image. This error is due to improper detector placement, with the receptor positioned too far to the distal. Which of the following BEST describes the process of heating the cathode wire until it is red hot and boiling off of electrons? you see a ghostlike radiopaque appearance on tooth #30. which restoration does your patient have on this tooth? What is the cause of a double exposure? (1). Research has shown that the majority of retakes are due to poor image quality.3 Errors in density and contrast can limit a practitioners ability to capture the maximum amount of information that may be available.1 Inappropriate exposure parameters can easily be corrected by displaying a wall-mounted technique chart that includes information regarding appropriate exposure settings.
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