General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . Fig. 433.—Portion of a mandible with cortical layer of bone removed. The relationof the roots of the teeth to the cancellated substance of the jaw is seen. The abundanceof blood vessels in the cancellated substance is responsible in some cases for the arrest-ment of the infection, while in fortunately infrequent instances it is the reason forsevere metastases. result of the infectious processes which develop in the peri-apical space, and when this cortical layer d
General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . Fig. 433.—Portion of a mandible with cortical layer of bone removed. The relationof the roots of the teeth to the cancellated substance of the jaw is seen. The abundanceof blood vessels in the cancellated substance is responsible in some cases for the arrest-ment of the infection, while in fortunately infrequent instances it is the reason forsevere metastases. result of the infectious processes which develop in the peri-apical space, and when this cortical layer disintegrates the in-fection at once reaches the cancellated bone of the alveolar proc-ess, which is a continuation of the cancellated spaces of the jawproper (Figs. 433, 434, and 435). These spaces contain themedullary substance—a tissue richly supplied with blood vesselsand lymphatics. The involvement of the alveolar Avails is in thenature of a septic osteomyelitis. The medullary substance con-tained in the cancellated spaces becomes the seat of a chronic in- 546 DKXTAL IATIIOUHJY. Fig. 434.—Vertical gross section of mandible in molar region. An abscess whicbdevelops in the peridental membrane of the apical region soon involves this cancellatedsubstance in which blood-vessels are numerous (in the myeloid substance). Acute orchronic osteomyelitis and metastatic infections are the probable results.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpathology, bookyear19
