1. European Society of Endodontology. Quality guidelines for endodontic treatment: consensus report of the European Society of Endodontology. Int Endod J. 2006;39:921–30.
2. Kakehashi S, Stanley HR, Fitzgerald RJ. The effects of surgical exposures of dental pulps in germfree and conventional laboratory rats. J South Calif Dent Assoc. 1966;34:449–51.
3. Bergenholtz G. Micro-organisms from necrotic pulp of traumatized teeth. Odontol Revy. 1974;25:347–58.
4. Sundqvist G. Bacteriological studies of necrotic dental pulps. Umea University Odontological Dissertation No.7. Umea: University of Umea; 1976.
5. Friedman S, Mor C. The success of endodontic therapy – healing and functionality. J Calif Dent Assoc. 2004;32(6):493–503.