【摘要】 采用严格的厌氧技术和稳定的实验条件,通过与15例慢性根尖周炎的对照分析,对30例急性根尖周炎患牙根管内厌氧菌的分离培养研究表明:急性根尖周炎是以厌氧菌为主的混合感染,厌氧菌主要分布干类杆菌、梭杆菌、丙酸杆菌、消化链球菌、真细菌和韦荣氏球菌等6属,其中产黑素类杆菌组菌和核梭杆菌菌种与其发生有密切关系;急性根尖周炎是由口腔正常菌群失调所致的内源性感染,厌氧菌与需氧菌以及不同菌属、种之间的协同作用都参与了其发生。更多还原

【Abstract】 The isolation and identification of the anaerobic bacteria isolated from infected root canals of teeth with acuteperiapical lesions were carried out by using obligatory anaerobic techniques and steady experimental condition andthrough contrast analysis with the chronic ones.The results indicated that the acute periapical lesions were mixedpolymicrobial infections in which anaerobes dominated.Bacteroides,Fusobacterium,Propionibacterium,Peptostrep-tococcus,Eubacterium and Veillonella were the predominant anaerobicgeneras.Among them.the Black—pigmentedbacteroids and F.nucleatum might play an important role in the induction of acute periapical lesions.Acute periapi-cal lesions appeared to be endogenic infection caused mainly by dysbacteriosis.Anaerobic bacteria,aerobic bacteriaand their different generas and species had cooperative pathogenic effects.更多还原