![]() ![]() Handpieces are devices to hold the rotating instruments, transmitting power to them and aid in their intra oral positioning. These engine driven instruments can be used with three different types of handpieces: Instruments under the ISO Groups II and III include engine driven, ultrasonic and slow speed electric motors. What are the different types of handpieces used in endodontics? The speed of the instrument was limited to 100 rpm to avoid fractures of the rotary instrument. Specially designed needles were used by Rollins, which were mounted into the dental handpiece with a 360-degree rotation. Rollins, to aid in automated preparation of the root canal. The first endodontic handpiece was developed by William. The first description of rotary instrument use in endodontics was done by Oltramare in the year 1889. ![]()
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