. Dental and oral radiography : a text book for students and practitioners of dentistry . Fig. 47-B. The areas in the upper and lower jaws extending from the median lineto the first premolar can be radiographed by utilizing this technic. A, Tech-tlic for left side; B, Technic for right side. DENTAL AND ORAL RADIOGRAPHY TECHNIC 105 portant, in making these pictures, to have the pa-tients head supported in such a manner that itcan be held still for a longer period than is re-quired in making the exposures of the other areasmentioned. When ready to make the exposure for extra-oral radiographs, th
. Dental and oral radiography : a text book for students and practitioners of dentistry . Fig. 47-B. The areas in the upper and lower jaws extending from the median lineto the first premolar can be radiographed by utilizing this technic. A, Tech-tlic for left side; B, Technic for right side. DENTAL AND ORAL RADIOGRAPHY TECHNIC 105 portant, in making these pictures, to have the pa-tients head supported in such a manner that itcan be held still for a longer period than is re-quired in making the exposures of the other areasmentioned. When ready to make the exposure for extra-oral radiographs, the apparatus is arranged withthe anode of the tube about twenty inches from. The structures at the median line including the incisors, both above andbelow, may be secured in this way. the plate. The patient is instructed to keep themouth closed with the teeth together in their nat-ural occlusion. They should also be warned as tothe approximate length of time the exposure willrequire, and that they must remain the more powerful types of apparatus, 106 DENTAL AND ORAL RADIOGRAPHY extra-oral radiographs require but short ex-posures, but if an operator does not possess highpower apparatus, he should not hesitate to usethis method, as a patient properly seated and sup-ported, as shown in Fig. 41, can easily remain
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