Process for Producing a Shape Memory Spiral Rotary File

摘要

A method for manufacturing at least one nonlinear file including the steps of deforming at least a portion of a linear file away from a file axis and heat-treating the deformed file to shape-set the nonlinear file.

主权项

1. A method for manufacturing at least one nonlinear file comprising the steps of:
providing a file having a shaft and a file axis; providing a first fixture having a first file groove for receiving the shaft, the first file groove being defined by one or more first displacement members; inserting at least one portion of the shaft into the first file groove, the at least one portion of the shaft including a first portion of the shaft; contacting the first portion of the shaft with a first displacement member of the one or more first displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft, the first offset portion of the shaft and the file axis defining a first file plane; heating the first offset portion of the shaft while inserted in the first fixture to a temperature from about 200° C. to less than the melting point of the file for a time period from about 1 minute to about 640 minutes to shape-set the first offset portion of the shaft thereby forming a shape-set nonlinear file.