Gajan Esrafil Balaei, Aghazadeh Mohammad, Abashov Rahib, Salem Milani Amin, Moosavi Zohreh
Lecturer, Department of Community Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
J Dent Res Dent Clin Dent Prospects. 2009 Winter;3(1):24-7. doi: 10.5681/joddd.2009.007. Epub 2009 Mar 16.
The aim of this study was to determine the microorganisms prevalent in the necrotic dental pulp and root canals of unsuccessfully treated teeth.
The present study was conducted on 150 single-rooted teeth of patients referring to a dental clinic. Sampling was performed by placing a sterile paper point in the canal for 60 s. Bacterial samples were evaluated by a microbiological technique specific for anaerobic species, used for isolation and identification of sampled strains.
From the 150 samples taken, 101 were from necrotic pulps (primary infection) and 49 were from the teeth with an unsuccessful endodontic treatment (secondary infection).
Enterococcus faecalis was a prevalent species in the failed root canals evaluated.
本研究的目的是确定治疗失败牙齿的坏死牙髓和根管中普遍存在的微生物。
本研究对转诊至牙科诊所的患者的150颗单根牙进行。通过将无菌纸尖置于根管内60秒进行取样。采用针对厌氧菌的微生物技术对细菌样本进行评估，用于分离和鉴定采样菌株。
在采集的150个样本中，101个来自坏死牙髓（原发性感染），49个来自根管治疗失败的牙齿（继发性感染）。
粪肠球菌是所评估的失败根管中的优势菌种。
