. Dental and oral radiography : a text book for students and practitioners of dentistry . Fig. 63. Large alveolar abscesses emanating from the upper lateral incisor andextending to the adjacent central incisor and Fig. 64. Chronic alveolar abscess cystic in character, above an upper lateral filling material forced through the end of the root is plainly visible. nerve openings as the mental foramina, and wherethey are markedly circumscribed, that is, havinga distinct and abrupt line of demarcation betweenthe dark area and its surrounding tissues, we can INTERPRETATION OF R
. Dental and oral radiography : a text book for students and practitioners of dentistry . Fig. 63. Large alveolar abscesses emanating from the upper lateral incisor andextending to the adjacent central incisor and Fig. 64. Chronic alveolar abscess cystic in character, above an upper lateral filling material forced through the end of the root is plainly visible. nerve openings as the mental foramina, and wherethey are markedly circumscribed, that is, havinga distinct and abrupt line of demarcation betweenthe dark area and its surrounding tissues, we can INTERPRETATION OF RADIOGRAPHS 139 in nearly every case, even if a clinical history belacking, make the positive diagnosis of alveolarabscess. (See Figs. 57, 58, 59, 60, 61, 62, 63, 64and 65.) Necrosis likewise appears upon the plate as adark area, bnt differs in a characteristic wayfrom the ordinary alveolar abscess in that it is Ki 1 I ■ JL \ I ^L w^W^^ A ! c L m* X iJ Fig. 65. A shows an upper bicuspid tooth with an alveolar abscess at its rootapex. It will be noted that the root canal is improperly filled. B showsthe same tooth about two months after it was treated and the root canalproperly filled. The rarified area about the a
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