rub a finger along the tissues where the film touches.All of the following can be used for handling film in the daylight loader EXCEPTWhich of the following errors occur when the vertical angulation is incorrect?Which of the following cells exposed to radiation may be associated with leukemia?Which of the following protection techniques is used to minimize x-radiation exposure to the operator?How often should step wedge quality control tests for a dental x-ray machine be conducted?Compared to the paralleling technique a DISADVANTAGE of the bisecting angle technique isWhen changing the 8-inch PID to a 16-inch PID, which of the following is used to determine the intensity of the beam?The most radiolucent area on an anterior radiograph is theThe median palatal suture is visible on which of the following radiographs?When using a 16-inch PID compared to an 8-inch PID the exposure time mustThe best way to correct a conecutting error is to adjustSomatic effects of radiation do NOT have damaging effects onD.
DANB RHS mock exam. disinfect the surface with an intermediate-level disinfectant.Developing solution temperatures should be checked frequently when usingThe Buccal Object Rule is used to determine if a foreign body is located in which direction?On a radiograph, the anterior alveolar crest normally appearsRadiographs appear dark after processing when the developing solution isOn a full mouth series with eighteen films, how many anterior films are exposed?Which of the following would cause a radiopaque artifact on a radiograph?After a patient has been dismissed, dental unit surfaces and counter tops that may have been contaminated should be cleaned with an EPA-registeredDental healthcare personnel who are pregnant can expose radiographs during theAccording to the CDC, how are the transmission of pathogens minimized when using phosphor sensors to capture radiographic images?Most bilateral findings in radiographs are consideredPatients should wear a thyroid collar during which type of radiographic exposure?When exposing radiographs, what is the minimum distance the operator should stand from the tube head?When taking an occlusal radiograph, the film packet should extend from the patient's mouth by approximatelyThe best way a dental assistant can minimize cross-contamination when exposing radiographs is toWhich of the following quality control tests evaluates safelighting in the darkroom?During film processing, which of the following can cause a dark image?A processed film has a straight, clear border on the upper edge.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. A radiograph that has many dark and light areas with few shades of gray. Terms in this set (101) High contrast. Create .
This lamina dura remodels and the socket fills in aboutThe longer a periapical access has been present, the darker it will appear on a radiograph becauseTo compensate for a patient with thick tissue and dense bones, you may increase the this to provide a film of diagnostic density.A variation in the true size and shape of the object being radiographed.The size of the X-ray tube focal spot influences radiograph image.What would not apply to a radiograph with long scale contrast?When taking radiographs, increasing the milliamperage while maintaining kilovoltage, exposure time and film speed results inIf the source-to-film distance were increased without changing mA or exposure time, the resultant radiograph wouldWhat combination of structures appear radiolucent in a radiograph?Nasal forssae,mental foramen, periodontal ligament spaceWhen a timer button on the x-ray machine is released after making a radiographIt is perfectly safe to immediately step into the operatory as the radiation ceases as soon as the timer has completed its exposure.Regardless of the intraoral radiograph technique employed, incorrect horizontal angulation will result inThe MPD ( maximum permissible dose) for a radiation worker per yearA radiolucent landmark usually seen below the lower central incisors .What is not a landmark seen in maxillary periapical films?The imaginary line that passes from the bottom of the eye socket through the top of the ear canal.Digital radiography requires less radiation than conventional radiography becauseRemove unexposed silver halide and shrink and harden emulsion.Panoramic radiographs are least useful in detectingResults in the greatest reduction in radiation to the patient.In what year did Dr. Wilhelm Conrad Roentgen discover the x-ray?The intensity of the useful beam varies inversely as the square of the distance.When using an ultraspeed film with an 8" cone and an exposure time of half a sec; the exposure time using a 16" cone and ultraspeed film will beThe MPD for whole body exposure per year for occupationally exposed personnel.The portion of the target that is struck by electronsThe lead diaphragm determines the size and shape of theWho should hold the film in a patient's mouth if he or she is unable to?Distance operator should be while exposing a radiograph.Film was left in fixer overnight or the film has not been exposed.When placing a periapical radiograph film packet in the mouth, the dot should always be placedTowards the occlusal-Incisal surfaces of the teeth.Intraoral radiograph with herringbone pattern or "tire track" on image is caused byThe wrong side of the packet being placed toward the source of radiation.When the x-ray beam is properly collimated, the size of the beam at the skin level should beWhen using the buccal object rule or the tube shift method to locate an object, the second exposure shows the object in question to move in the same direction as the horizontal shift of the tube. You can apply online right now! record the occupational exposure received by the operator.The amount of radiation and exposure time needed to produce a diagnostic radiograph is best determined byWhich of the following would you adjust to produce wavelengths with the greatest penetrating power?During patient exposure, protection from radiation for the dental assistant includesWhich of the following tissues is the most highly radiosensitive?What is the primary advantage in using digital radiography?Which of the following radiolucencies may be mistaken for caries?The purpose of a grid device on an extraoral cassette is toIf a patient's gag reflex is stimulated during the radiographic procedure, the dental assistant shouldD.
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