Abstract: There is provided a needle tip for extracting separated endodontic instruments from the root canal of a tooth. The needle tip is fabricated with a thermomechanically treated alloy exhibiting both shape memory and super-elasticity. There is also provided for a needle that includes a handle and a terminal tip, which is fabricated with a thermomechanically treated alloy. The alloy is thermomechanically treated nickel- titanium alloy. The needle is straight at room temperature and takes on a specific shape when inserted in the canal of the tooth from which the endodontic separated instrument is to be extracted. Also provided herein is a method for removal of endodontic separated instruments from the canal of a tooth.

Abstract: There is provided a needle tip for extracting separated endodontic instruments from the root canal of a tooth. The needle tip is fabricated with a thermomechanically treated alloy exhibiting both shape memory and super-elasticity. There is also provided for a needle comprising a handle and a terminal tip, which is fabricated with a thermomechanically treated alloy. The alloy is thermomechanically treated nickel-titanium alloy. The needle is straight at room temperature and takes on a specific shape when inserted in the canal of the tooth from which the endodontic separated instrument is to be extracted. Also provided herein is a method for removal of endodontic separated instruments from the canal of a tooth.