System for evaluating cutting efficiency of root canal rotary instruments

A system for evaluating cutting efficiency of root canal rotary instruments, comprising:

• a root canal rotary instrument;
• a driving unit, wherein the root canal rotary instrument is attached on the driving unit, and driven thereby;
• a cutting object;
• a prestressing force providing unit, wherein the cutting object is pressed by the prestressing force providing unit to contact the root canal rotary instrument;
• and
• a feeding unit arranged to feed the cutting object to the root canal rotary instrument, such that the root canal rotary instrument cuts an uncut surface of the cutting object,
• wherein the driving unit comprises a contra-angle handpiece, the root canal rotary instrument is disposed on the contra-angle handpiece, and the root canal rotary instrument is driven by the contra-angle handpiece,
• wherein the driving unit further comprises a first sliding member, the contra-angle handpiece is disposed on the first sliding member, the first sliding member slides in a first direction and a second direction to modify a position of the root canal rotary instrument, and the first direction is perpendicular to the second direction,
• wherein the cutting object comprises a first cylinder, and the feeding unit rotates the first cylinder.