Patent ID: 7758343

Claim:
An apparatus for removing enamel from a person's tooth, comprising: a blade portion comprising an abrasive surface adapted to remove enamel from the tooth in response to reciprocating movement of the abrasive surface against the enamel of the tooth; and a handle portion coupled to the blade portion, the handle portion comprising: a material formed from a combination of semi-crystalline polyamide with partially aromatic copolyamide; and first and second regions, the first region proximal to the blade portion and the second region distal to the blade portion, the first region comprising a substantially solid cross-section with a substantially circular perimeter and the second region comprising a substantially solid cross-section with at least a substantially semi-circular perimeter, the solid cross-section of the second region defining a notched region; wherein the notched region defines an open shape that allows the handle portion to flex inward when inserted into a corresponding opening in a driver mechanism, creating a compression fit in the driver mechanism; and wherein the driver mechanism is configured to drive reciprocating movement of the blade portion to provide the reciprocating movement of the abrasive surface.