[Root canal filling materials (electron scanning microscope comparison of root canal adaptation to 3 endodontic filling products)].
The main characteristics required of a good endodontic fillingsmaterial are its perfectly hermetic sealing of the root canal, the eventual secondary canals, and the dentine canals, against bacteria. 48 root canals, sealed respectively with A H 26, Endomethazone and N 2, have been checked by means of the Scanning Electron Microscope in order to discover to what extent these products conform to the qualifications mentioned. 842 photographs have been taken. The results of the investigation are discussed judging from some photographs chosen at random.