Patent ID: 7249948

Claim:
A dental instrument comprising: an elongated metal handle having a first end and a second end, the handle having a length in the range of about 3 7/16 inches to about 3 15/16 inches and a diameter in the range of about ¼ inches to about ¾ inches; wherein said handle comprises a first terminal shaft having a front end and a back end, the first terminal shaft having a knurling pattern extending from the front end to the back end, wherein the knurling pattern improves the grip on the dental instrument, the back end of the first terminal shaft located at the first end of the handle, the first terminal shaft having an angle μ formed between a line extending along and out of the handle and a line extending along the first terminal shaft from the back end to the front end; a first terminal shank secured to the first terminal shaft; and a first working end metallically secured to the first terminal shank, wherein the first working end provides an instrument for cleaning or repairing a tooth; wherein the first terminal shaft is hollow, and the terminal shank is secured to the first terminal shaft via an internal tapered sweated fit.