| 摘要 |
A self contained heated root canal dental instrument which combines the operations of a root canal spreader, a root canal condenser and a root canal filling material heater is provided. The instrument (20) has batteries (66) in its handle (28) for use as a power source for heating root canal filling material and employs a non-corrosive dental tool (10) that has a resistive element (18) in its tip (15) to provide the heating when electricity from the batteries is conducted through the tip. A method for making the dental tool is provided which comprises threading a resistive element through a cannula which is used as the dental tool. The resistive element comprises a resistive wire plated with electrically conductive material throughout its length except where heating of the resistive element is desired. |
