General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . urgical interference, necrosiswill not occur: but if the reverse should be the case, necrosis willresult. The infectious inflammation is intraperiosteal or sub-periosteal, or both. In the event that no drainage through theperiosteum is established, the inflammation proceeds between theperiosteum and the bone, strips the latter of its overlying peri- 468 DENTAL PATHOLOGY osteum, and necrosis of the superficial layers of bone infection may then penetrate
General and dental pathology with special reference to etiology and pathologic anatomy; a treatise for students and practitioners . urgical interference, necrosiswill not occur: but if the reverse should be the case, necrosis willresult. The infectious inflammation is intraperiosteal or sub-periosteal, or both. In the event that no drainage through theperiosteum is established, the inflammation proceeds between theperiosteum and the bone, strips the latter of its overlying peri- 468 DENTAL PATHOLOGY osteum, and necrosis of the superficial layers of bone infection may then penetrate back into the cancellated spaceswherein, as the result of multiple infectious emboli (occlusion ofarterioles and capillaries), interference of the circulation takesplace, resulting in more extensive areas of necrosis than wherethe periosteum alone is affected. Dentoalveolar abscess is afrequent source of periostitis of the jaws accompanied by necro-sis and the formation of sequestra (Fig. 369). Acute periostitis may be localized or diffused, according to thedegree of resistance of the tissues immediately over the path of the. Fig. 369.—Sequestrum wliicli came away attached to a tooth following a chronic dento-alveolar abscess of long standing. infection, and the type of microorganism concerned in the infec-tion. A small area of bone may die; and again, the process maybe of a progressive character—a diffuse acute periostitis—caus-ing the formation of a number of sequestra over a relativelyextensive area of the jaw. An acute dentoalveolar abscess re-sults usually in a localized acute periostitis, which subsides uponthe removal of the infectious source in the root canal. The perios-tiiis may, however, be of the diffuse type, accompanied by exten-sive necrosis. Acute periostitis, if diffused, results in secondaryosteomyelitis, causing a greater depth of necrosis of the jaws or PERIOSTITIS OF THE .1 \\\ 409 caries of bone. It occurs with greater frequency in the lower thanin
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpathology, bookyear19
