Dental tool used in dentistry for screwing in crowns comprises a screw unit rotatably positioned in a guiding sleeve and rotatably connected to a rotating shaft

摘要

Dental tool comprises a screw unit (2) rotatably positioned in a guiding sleeve (3) and rotatably connected to a rotating shaft. Preferred Features: The rotating shaft is connected to a handle (5). The screw unit has a guiding shaft inserted into the inner chamber of the guiding sleeve. The sleeve has a stop on the front edge of the sleeve.