Principles and practice of operative dentistry . Progressive suppuration of the pulp. (AfterBlack.) X 100. a, healthy tissue; &, odonto-blastic layer; c, inflamed tissue showing di-lated veins; d, line of demarcation of suppu-rative process; e, pus. 410 OPERATIVE DENTISTRY. nective-tissue cells involved in the affected area produces a like result inthem, and by the action of the pyogenic bacteria which have gained accessthrough external channels, or through the avenue of the circulation, theexudates and the tissues are converted into pus. These abscesses are usu-ally situated near the point of
Principles and practice of operative dentistry . Progressive suppuration of the pulp. (AfterBlack.) X 100. a, healthy tissue; &, odonto-blastic layer; c, inflamed tissue showing di-lated veins; d, line of demarcation of suppu-rative process; e, pus. 410 OPERATIVE DENTISTRY. nective-tissue cells involved in the affected area produces a like result inthem, and by the action of the pyogenic bacteria which have gained accessthrough external channels, or through the avenue of the circulation, theexudates and the tissues are converted into pus. These abscesses are usu-ally situated near the point of exposure, and are rarely found says it is not uncommon to find several minute pus-pockets at alittle distance from the point of exposure. The abscess may, however,occupy the central portion of the pulp. Burchard removed such a pulp,the abscess involving nearly its entire structure, but leaving the peripheralportion unbroken, as shown in Fig. 504. Fig. Transverse section of pulp of inferior bicuspid, partly diagrammatic. (After Burchard.)cavity; 6, embryonic cells at periphery of abscess cavity; c, occluded blood- Black has found abscesses in the deeper structures of the pulp, mostfrequently in the molars. Fig. 505 shows such an abscess in a central in-cisor, about midway of its length, the coronal portion of which was sup-purating, while the evidences of inflammation within the deeper structureswas rather more extended than is common. Suppurative inflammation of the pulp under cappings and large fillingsused to be a frequent occurrence before the introduction of antiseptics inthe treatment of surgical wounds. To-day, however, such occurrences aremuch more rare by reason of the improved methods of treatment whichhave been based upon this great scientific discovery. Symptoms and Diagnosis.—The formation of an abscess in the softtissues of the body causes considerable swelling, and when the swelling ishindered by overlying and unyie
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