1. Treatment outcome in endodontics: the Toronto Study. Phase 1: initial treatment;Friedman;J Endod,2003
2. The success of endodontic therapy—healing and functionality;Friedman;J Calif Dent Assoc,2004
3. Endodontic treatment statistics. American Association of Endodontists; 2006. Available at: http://www.aae.org/about-aae/news-room/endodontic-treatment-statistics.aspx. Accessed November 15, 2014.
4. On the causes of persistent apical periodontitis: a review;Nair;Int Endod J,2006
5. Periapical actinomycosis;Nair;J Endod,1984