Patent ID: 8192200

Claim:
A method for removing material from an internal portion of a tooth using an endodontic instrument, the method comprising the steps of: a. displacing material from an internal portion of the tooth by manipulating the endodontic instrument using an automated handpiece; b. displacing material from an internal portion of the tooth by manipulating the endodontic instrument manually; and c. removing the endodontic instrument from the handpiece prior to the step of manipulating the endodontic instrument manually, wherein the endodontic instrument is not removed from the tooth being operated on while the handpiece is being removed, wherein the endodontic instrument comprises an elongated shaft including a proximal end and a distal end; a cutting surface extending along a working portion of the elongate shaft; a handle attached adjacent the proximal end of the elongate shaft, the handle including a first end and a second end; a projection extending around a portion of the perimeter of the shaft substantially adjacent the first end of the handle, wherein the projection provides a barrier to prevent a user's fingers from moving beyond the handle directly onto the elongate shaft; and an attachment member adjacent the second end of the handle for removable attachment of the instrument to an automated rotary dental device.