1Sato T, Hbshino E, Uematsu H, et al. Predominant obligate anerobes in necrotic pulps of human deciduous teeth. Mcrcbial Eoology Health and Disease, 1993, 6: 269-275.
2Jacinto RC, Gomes BP, Ferraz CC. Microbiological analysis of infected root canals from symptom atic and asymptom aticteeth with periapical periodontitis and the antim icrobial susceptibility of some isolated anaerobic baciteria. Oral Microbiol Munol, 2003, 18(5): 285-292.