What are the generations of endomotors?
Endomotors have been improved over the years resulting in 4 generations of endodontic motors for use in root canal therapy.
1st generation endomotors - without torque control
2nd generation endomotors - with torque limiter
3rd generation endomotors - with simple torque control
4th generation endomotors - with apex locator and torque control
The first description of rotary instrument use in endodontics was done by Oltramare in the year 1889. The first endodontic handpiece was developed by William. H. Rollins, to aid in automated preparation of the root canal. Specially designed needles were used by Rollins, which were mounted into the dental handpiece with a 360-degree rotation. The speed of the instrument was limited to 100 rpm to avoid fractures of the rotary instrument.