A method of filling a root canal of a tooth includes inserting a plug of filling material into the root canal until a tip of the plug resides substantially at the apical foramen of the root canal and delivering a filling material into a remaining exposed portion of the root canal. An instrument for delivering...http://www.google.com.au/patents/US6261099?utm_source=gb-gplus-sharePatent US6261099 - Method and apparatus for filling a root canal of a tooth
