. Elementary and dental radiography / by Howard Riley Raper . Fig. 41S. Radiograph of Figure Fig. 419. What seems to be a post passing through the side of the root. floor of the pulp chamber if the tooth is one in which there has been aneffort made to open its canals. But the liability of the presence of a holein the external alveolar plate near the region of bifurcation should notbe lost sight of. The opening occurs in this region following the path of READIXC RADIOGR. IPHS 375 least resistance, the path directly buccally or buccally and downwardbeing through the very dense bone -of the
. Elementary and dental radiography / by Howard Riley Raper . Fig. 41S. Radiograph of Figure Fig. 419. What seems to be a post passing through the side of the root. floor of the pulp chamber if the tooth is one in which there has been aneffort made to open its canals. But the liability of the presence of a holein the external alveolar plate near the region of bifurcation should notbe lost sight of. The opening occurs in this region following the path of READIXC RADIOGR. IPHS 375 least resistance, the path directly buccally or buccally and downwardbeing through the very dense bone -of the external oblique ridge. Ab-scesses at the apices of the lower molars often show the dark area repre-senting the abscess indistinctly, the negative having a light haze thrownover it due to the density of the oblique- ridges. Thus care must be exer-cised or absce>s areas at the apices of the lower molars—particularly thesecond and third, will be overlooked. Figure 419 shows what might easily be mistaken for a post passingthrough the side of the root. Notice, however, there is no bone destr
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