File:Elementary and dental radiography (1913) (14570520540).jpg

Identifier: elementarydental00rape (find matches)
Title: Elementary and dental radiography
Year: 1913 (1910s)
Authors: Raper, Howard Riley, 1886-1978
Subjects: Radiography, Dental
Publisher: New York, Consolidated dental mfg. co. (etc., etc.)
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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estruction in alveolar abscesses is a matter ofwhich we know entirely too little. A systematic radiographic study ofthe subject is bound to result in the disclosure of interesting and im-portant facts. A question, the answer to which is of extremeTigs. 300 and 301. importance is, Do alveolar abscess cavities becomefilled with bone after the abscess is cured? My ex-perience leads me to believe they do; but the new bone is not so dense,and it is susceptible to ready disintegration as a result of contiguous in-flammation. To elucidate: Observe Fig. 300, a case from the practiceof I Jr. R. Ottolengui. Note the light areas at the apices of both the cen-tral and lateral. A cursory observation of the radiograph, and a failureto consider clinical history, would result in the diagnosis of abscess ofboth the central and lateral. Observe, please, however, that the canal ofthe central i-, well filled, while the canal of the lateral is not filled at all. THE USES OF THE RADIOGRAPH IN DENTISTRY 265
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§ o 266 DEXTAL RADIOGRAPHY The central had been filled three years previously to the making of theradiograph, and there had been no recurrence of the abscess during thattime. The lateral was treated and its canal filled, when all symptoms ofabscess disappeared, proving it to be entirely responsible for the trouble.Fig. 301 was made one week after the canal of the lateral was filled.What I shall speak of now I fear cannot be seen in the accompanyinghalf-tone; but it can be observed easily in the negatives. At the apex ofthe central there is a disposition of bone in the old abscess cavity. Thebone is not as dense as the surrounding structure, and hence the outlineof the old cavity can still be seen; but it is sufficiently dense, so that itcan be observed distinctly, and especially well when compared with thecavity at the apex of the lateral, which has not been freed from infectionlong enough to permit of an osseous formation within it. Just what changes occur in the temporo-mandibular

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