타액내의 정상균총 및 발치후 발치와내의 세균학적 연구

A study on microorganisms in saliva and in extraction sockets of humans

There are many microorganisms in oral cavity. Numerous factors may influence on the composition of oral flora. By the studies of previous investigators, they possibly act as a pathogens in odontogenic infections. But there was no description of the organisms which are found in the simple extraction socket immediately after the tooth has been removed. If the valid theories are to be advanced concerning the relationship to postoperative inflammation, knowledge of the early bacterial study is essential. Fifty-patients were chosen for this study who visited Catholic Medical College Hospital, department of dentistry, during the period of March to May 1984 under the diagnosis of pulpitis and periodontitis. They all had been swabbed from saliva. And with local anesthesia, all had been pulled out single tooth. From the extraction socket, swabbing had been done like sampling of saliva. Those samplings were transported to the laboratory as soon as possible and cultured aerobically & anaerobically. The obtained results were as follows; 1. Total cultured strains were 563 strains. The average number of bacteria identified was 11.2 strains per person. 2. Total aerobic strains were identified 355, anaerobes, 208 with the average of 7.1 and 4.1 strains per person respectively. 3. Total cultured strains of saliva were 276 strains. Total cultured strains of Extraction socket were 287 strains. Their aerobes and anaerobes were 184, 92 strains, and 171, 116 strains respectively. 4. In comparison between bacterial species in saliva and extraction socket, most frequently identified groups were as follows; In saliva aerobic groups were streptococcus viridans 45 strains (24%) Haemophilus parainfluenzae 33 strains (18%) Branhamella catarrhalis 29 strains (16%) Anaerobic groups were Bacteroides oralis 22 strains (24%) Bacteroides melaniogenicus 13 strains (14%) anaerobic streptococci 10 strains (11%) In extraction socket aerobic groups were streptococcus viridans 42 strains (25%) Branhamella catarrhalis 31 strains (18%) Haemophilus parainfluenzae 26 strains (15%) anaerobic groups were Bacteroides oralis 24 strains (21%) Bacteroides melaninogenicus 23 strains (20%) Fusobacterium nucleatum 11 strains (9%)