PERIAPICAL GRANULOMA CHRONIC APICAL PERIODONTITIS a mass of

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PERIAPICAL GRANULOMA (CHRONIC APICAL PERIODONTITIS)

PERIAPICAL GRANULOMA (CHRONIC APICAL PERIODONTITIS)

a mass of chronically inflamed granulation tissue at the apex of a nonvital tooth.

a mass of chronically inflamed granulation tissue at the apex of a nonvital tooth. No true granulomatous inflammation microscopically. a defensive reaction secondary to the presence of bacteria in the root canal These lesions are not static …………. periapical cysts or abscess formation. approximately 75% of apical inflammatory lesions

A radiolucency of variable size loss of the apical lamina dura. circumscribed or ill-defined.

A radiolucency of variable size loss of the apical lamina dura. circumscribed or ill-defined.

Root resorption is not uncommon chronic low-grade inflammatory reaction will result in root resorption

Root resorption is not uncommon chronic low-grade inflammatory reaction will result in root resorption

Incomplete root canal therapy

Incomplete root canal therapy

Trauma devitalized two of these teeth Vitality test ………. . to eliminate the possibility

Trauma devitalized two of these teeth Vitality test ………. . to eliminate the possibility of osseous dysplasia.

Histopathologic Features inflamed granulation tissue surrounded by a fibrous connective tissue wall. granulation tissue

Histopathologic Features inflamed granulation tissue surrounded by a fibrous connective tissue wall. granulation tissue a variably dense lymphocytic infiltrate that is intermixed frequently with neutrophils, plasma cells, histiocytes, and, less frequently, mast cells and eosinophils. number of young capillaries surrounded by a mixed inflammatory reaction

Granulation tissue with intense chronic inflammation

Granulation tissue with intense chronic inflammation

Foam cells

Foam cells

Granulation tissue is not a component in all cases of chronic apical periodontitis. In

Granulation tissue is not a component in all cases of chronic apical periodontitis. In older lesions you may see more fibrosis.

Russell bodies numerous plasma cells are present, scattered eosinophilic globules of gamma globulin

Russell bodies numerous plasma cells are present, scattered eosinophilic globules of gamma globulin

Collections of cholesterol clefts with associated multinucleated giant cells Cholesterin deposits indicate cellular degeneration.

Collections of cholesterol clefts with associated multinucleated giant cells Cholesterin deposits indicate cellular degeneration.

red blood cell extravasation with hemosiderin pigmentation

red blood cell extravasation with hemosiderin pigmentation