顎口腔領域感染症の重症度別検出菌の検討

Abstract

The purpose of the present study was to investigate the correlation between clinical findings and isolated organisms in 83 cases of suppurative infections of the oral and maxillofacial regions. This bacteriological study was performed by taking pus specimens from 83 closed abscesses. Eighty-three cases were divided into three groups by clinical features and courses. Included were severe infection type (81 strains in 19 cases), moderate infection type (106 strains in 27 cases), and light infection type (142 strains in 37 cases). The most common species were Streptococcus constellatus, Peptostreptococcus micros, Fusobacterium nucleatum and black-pigmented gram negative bacilli (Porphyromonas and some Prevotella). Most samples (71.1%) were a mixture of aerobes and anaerobes. Anaerobic bacteria were found in most of the samples (90.4%). The frequency of anaerobic infections was significantly higher in severe infection type than in other types. Gram positive cocci were the most common among severe and moderate infection types. Anaerobic gram positive cocci and anaerobic gram negative bacilli were significantly higher levels in severe and moderate types than in light type. These microbial findings suggested that gram positive cocci and anaerobic gram negative bacilli, especially blackpigmented anaerobic gram negative bacilli, may play an important role in the exacerbation of bacterial infections affecting the oral and maxillofacial regions.