| 摘要 |
Endodontic instruments for use in performing root canal therapy on a tooth are disclosed. In one form, the instruments include an elongate shaft having a cutting edge extending from a distal end of the shaft along an axial length of the shaft. The shaft comprises a stainless steel alloy, and the shaft is prepared by heat-treating the shaft at a temperature above 25°C in an atmosphere consisting essentially of a gas unreactive with the shaft. In another form, the endodontic instruments have an elongate shaft having a cutting edge extending from a distal end of the shaft along an axial length of the shaft. The instruments solve the problems encountered when cleaning and enlarging a curved root canal. |
