歯内療法用器具の根管内破折防止方法の評価

抄録

Abstract : The present study was carried out to evaluate a system established by the author to prevent intracanal breakage of endodontic files. It consists of four factors : file-selection, file-maintenance, file-handling, and predetermined periods of use for endodontic files of all sizes. The system underwent a seven year clinical use at the author’s clinic. During the seven year period, 4,075 files were discarded after preparation of 5,357 root canals (0.76 per root).

 No breakage was observed in all the files.

 It was concluded that this system was found to be most effective against clinical breakage. Adoption of this system, at both private dental clinics like the author’s and larger dental clinics, will save labor in the process of removing the separated instrument fragment from the inside of the root canal.