. Elementary and dental radiography / by Howard Riley Raper . ior molar. mally much more cancelous in some individuals than in others, and thesame bone may be more cancelous in some regions than in others. Figure 403 shows suspicious ( ?) areas in the apical region of thecentral and lateral incisors. These areas are the nostrils, which may bemistaken for bone rarefication, due to infection. It is unlikely that thehalf-tone will show it well, but the original negative of Fig. 403 shows theoutline of the end of the nose distinctly. 9. To Mistake a Shadow Caused by the Spinal Column forNecrosis o
. Elementary and dental radiography / by Howard Riley Raper . ior molar. mally much more cancelous in some individuals than in others, and thesame bone may be more cancelous in some regions than in others. Figure 403 shows suspicious ( ?) areas in the apical region of thecentral and lateral incisors. These areas are the nostrils, which may bemistaken for bone rarefication, due to infection. It is unlikely that thehalf-tone will show it well, but the original negative of Fig. 403 shows theoutline of the end of the nose distinctly. 9. To Mistake a Shadow Caused by the Spinal Column forNecrosis of the Mandible. 368 APPENDIX Figure 404 shows overlapping of the ramus and the spinal column insuch a manner as to give the ramus the appearance of being diseased toone not proficient in the reading of radiographs. I recall also a case inwhich the shadow of a vertebra was mistaken for an unerupted tooth inthe ramus. 10. To Mistake the Lingual Tubercle for a Bone Whorl orthe Shadows on Either Side of the Lingual Tubercle for Osteo-torosity, Due to Fig. 403. Radiograph showingthe tip of the nose and thetwo nostrils, which latter havesomewhat the appearance ofabscesses of the lateral in-cisors. (Retouched.)
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