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When taking a panoramic radiograph of an obese patient compared to a thin person, exposure should be increased The major disadvantage of the bisecting angle technique is that image distortion is more likely A lead apron is used during Any dental radiographs What can cause different densities of film on the bottom of the rack? Fixer was reaching exhaustion. A film that has been exposed to scatter radition will appear Fogged X-ray exposure time should be increased if the patient is Large What wouldnt a patient have to remove before recieveing a panoramic? Watch What do you do if the the patient's parent does not want them to recieve radiographs? Inform the dentist and take note in chart. Incorrect horizontal angulation of the primary beam produces what? Overlapping of the proximal surfaces. Where is the incisive formaen located Maxillay anterior. What do cephalometric radiographs evaluate? jaw relationship. How should the patients head be oriented when taking a pano? with the midsagittal plane perpendicular to the floor. What contributes to the fogging of film? Light leaks in dark room. What can cause a radiographic image to be light? Weak developing solution. What is the purpose for using film holing devices? To assist in correct film placement. Film with a thin density and a herring bone pattern across it is the result of film packet reversal. A full mouth survey has just been taken and processed manually. the top film process rack have a straight clear border on them caused by what conecutting during exposure. Using a fater speed film requires A shorter amout of time for exposure. What doesnt affect the life expectancy of the radiographic processing solution? The temp of soultion. When film doesnt get washed sufficiently it will result in a brown- yellow stain on the radiograph. What can cause a radiograph to turn brown over time Underwashing. What effect will exposure to minor amounts of room light have on a radiograph? it will appear black. The density of a radiograph is not controled by Object Film Distance OFD What can help prevent cross contaminination? Cover with Barrier Envelopes. How can a person be protected from scatter radiation? By standing behind a barrier made of lead. Radiographs mounted with the dot up has the examiner looking at the mouth in what way? Outside the mouth looking in. A film exposed to light between fixing and developing will appear dark What landmark can serve as a guide to where the maxillary molars are? tuberosity Stirring the developer and fixer solutions before manually processing them will provide uniform concentration. What material is most resistant to the penetration of ionization radiation? Lead In what radiographic technique is the patient positioned in a device to support the chin. Pano What is the major advantage in using the highest speed film and higher kilovoltage? Reduces radiation to patient The best way to correct a cone cutting error is to Center position indicating device Should the exposure time change when radiographing an edentulous adult patient vs a a patient with full dentition? yes, it is decreased. If a radation badge reports exposure to a small amount of radiation, what should be done first. Evaluate the xray equipment and technique. In dental radiographyit is necessary to have to eliminate the less penetrating x-rays from the primary beam. What is the best radiograph to choose to evaluate a suspected sublingual salivary duct obstruction? Occlusal. What helps distinguish maxillary molar radiographs from the mandibular molar radiographs? The outline of the maxillary sinus is visible. The time between exposure to x-rays and the appearance of radiation damage is the Latent period. Foreshortening of the radiographic image when using the bisecting angle technique (BAT) results from Too much verticle angulation. Contrast on a dental radiography can be altered by changing the Kilovoltage. Which of the following should be performed to control the qualityof x-ray processing solutions in automatic processors? Check solution levels daily. Tubehead rotation during the exposure is required for which of the following techniques? Panoramic. For intraoral radiographya double film packet is used to produce identical films with a single exposure. Bitewings are used to detect caries. What ladmark would be most likely to indicate the midline of the mandible? genial tubercles.