Brook I, Frazier E H, Gher M E
Naval Medical Center, Bethesda, Maryland.
Oral Microbiol Immunol. 1991 Apr;6(2):123-5. doi: 10.1111/j.1399-302x.1991.tb00464.x.
Aspirates of pus from periapical abscesses in 39 patients were studied for aerobic and anaerobic bacteria. Bacterial growth was present in 32 specimens. A total of 78 bacterial isolates (55 anaerobic and 23 aerobic and facultative) were recovered, accounting for 2.4 isolates per specimen (1.7 anaerobic and 0.7 aerobic and facultatives). Anaerobic bacteria only were present in 16 (50%) patients, aerobic and facultatives in 2 (6%), and mixed aerobic and anaerobic flora in 14 (44%). The predominant isolates were Bacteroides spp. (23 isolates, including 13 Bacteroides melaninogenicus group), Streptococcus spp. (20), anaerobic cocci (18), and Fusobacterium spp. (9). Beta-lactamase-producing organisms were recovered from 7 of the 21 (33%) specimens that were tested. This study highlights the polymicrobial nature and importance of anaerobic bacteria in periapical abscess.
对39例根尖周脓肿患者的脓液进行了需氧菌和厌氧菌研究。32份标本中存在细菌生长。共分离出78株细菌（55株厌氧菌、23株需氧菌和兼性厌氧菌），每个标本平均分离出2.4株（1.7株厌氧菌、0.7株需氧菌和兼性厌氧菌）。仅存在厌氧菌的患者有16例（50%），存在需氧菌和兼性厌氧菌的有2例（6%），需氧菌和厌氧菌混合菌群的有14例（44%）。主要分离菌为拟杆菌属（23株，包括13株产黑色素拟杆菌群）、链球菌属（20株）、厌氧球菌（18株）和梭杆菌属（9株）。在21份检测标本中的7份（33%）分离出了产β-内酰胺酶的微生物。本研究强调了根尖周脓肿中微生物的多样性以及厌氧菌的重要性。
