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  • Title: Actinomyces israelii in osteoradionecrosis of the jaws. Histopathologic and immunocytochemical study of five cases.
    Author: Happonen RP, Viander M, Pelliniemi L, Aitasalo K.
    Journal: Oral Surg Oral Med Oral Pathol; 1983 Jun; 55(6):580-8. PubMed ID: 6348637.
    Abstract:
    Five surgically treated patients with osteoradionecrosis of the jaws are presented. The clinical history of the disease varied from 3 to 17 years. In three cases the progression of the disease was enhanced by surgical procedures performed in the irradiated area causing exfoliation of the premaxillary area in one case and spontaneous mandibular fracture in two cases. Actinomyces israelii was demonstrated in tissue sections of all five cases by using FITC-labeled specific antiserum and additionally with peroxidase-antiperoxidase method in one case. Candida was found in histologic sections of three cases. Radiation damage in the oral soft tissues and jawbones makes the atmosphere favorable for anaerobic microorganisms. The present results indicate that the role of A. israelii in the pathogenesis of osteoradionecrosis of the jaws has not been fully appreciated.
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