. Elementary and dental radiography / by Howard Riley Raper . Fig. 394. The anterior palatineforamen having the appear-ance of an abscess cavity atthe apex of an upper centralincisor. Fig. 395. Nasal cavity spotswhich have been mistakenfor abscesses of the upperanterior teeth and necrosis ofthe Fig. 396. Showing the antrum which is sometimes mistaken for an abscess of the upper pos-terior teeth. The shadow of the antrum may occur even as far forward as the apical region of the cuspid. Fig. 459A.) cannot be observed elsewhere, in a large extra-oral radiograph, it is prob-able that the
. Elementary and dental radiography / by Howard Riley Raper . Fig. 394. The anterior palatineforamen having the appear-ance of an abscess cavity atthe apex of an upper centralincisor. Fig. 395. Nasal cavity spotswhich have been mistakenfor abscesses of the upperanterior teeth and necrosis ofthe Fig. 396. Showing the antrum which is sometimes mistaken for an abscess of the upper pos-terior teeth. The shadow of the antrum may occur even as far forward as the apical region of the cuspid. Fig. 459A.) cannot be observed elsewhere, in a large extra-oral radiograph, it is prob-able that the spot at the apex of the tooth is the mental foramen. Thetooth should be tested with the electric test, for pulp vitality, if this test cannot be made, an exploratory, diagnostic opening may bemade into the tooth of sufficient depth to ascertain whether or not thepulp is vital. 2. To Mistake the Anterior Palatine Foramen for an Ab-scess Cavity. Figure 394 shows the anterior palatine foramen. Depending on the Rli. [DING R. IDJUCR. WHS 3*< angle of the rays and the position of the film, this foramen, which is inthe region of the apices, and between the roots, of the upper centralincisors, may have the radiographic appearance of an abscess cavity at theapex of one of the central incis
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