The A root canal treatment apparatus includes: a handpiece configured to hold a cutting tool in a head in a drivable manner; a motor driver and a micromotor configured to drive the cutting tool; a root canal length measurement circuit; and a control portion. The root canal length measurement circuit is configured to electrically detect a position of a tip end of the cutting tool in a root canal, using the cutting tool as a measuring electrode. The control portion is configured to perform drive for reversely rotating the cutting tool by a predetermined set angle (180 degrees) when the position of the tip end of the cutting tool detected by the root canal length measurement circuit reaches a predetermined set position, and then, stopping rotation.

An endo file for dental endodontic treatment includes: a head portion inserted into and detachably coupled to a hand piece; a tissue removing portion inserted, from the lower side of the head piece, into a patient's root canal for removing the nerve of a tooth; and a stress dispersion portion provided between the head portion and the tissue removing portion and having at least one horizontal penetration hole so as to buffer stress concentration generated during the rotation of the endo file, and to minimize endo file breakage.

An endo file for dental endodontic treatment includes: a head portion inserted into and detachably coupled to a hand piece; a tissue removing portion inserted, from the lower side of the head piece, into a patient's root canal for removing the nerve of a tooth; and a stress dispersion portion provided between the head portion and the tissue removing portion and having at least one horizontal penetration hole so as to buffer stress concentration generated during the rotation of the endo file, and to minimize endo file breakage.

A dental implant screwdriver harness system enables a dentist to restrain and stabilize an implant screwdriver, while simultaneously turning the driver head using only one hand. A tether attached to the dentist's hand/finger connects to a stepped socket assembly, comprising multiple driver sockets, which seat driver heads of several standard diameters. A flexible slotted driver shaft strap wraps over the driver shaft and holds the driver head down against a central socket base.

A dental implant screwdriver harness system enables a dentist to restrain and stabilize an implant screwdriver, while simultaneously turning the driver head using only one hand. A tether attached to the dentist's hand/finger connects to a stepped socket assembly, comprising multiple driver sockets, which seat driver heads of several standard diameters. A flexible perforated driver shaft strap wraps over the driver shaft and holds the driver head down against a central socket base.

Present invention provides a rotary endodontic file for root canal treatment of tooth with particular arrangement of wires so as to form a basket shape. The file is flexible and has increased resistance to cyclic fatigue breakage. Said rotary endodontic file is flexible, easy in operation, simple in design and it reduces 5 torsional as well as cyclic failure. Also, said file can be operated by using available endo-motors.

Present invention provides a rotary endodontic file for root canal treatment of tooth with particular arrangement of wires so as to form a basket shape. The file is flexible and has increased resistance to cyclic fatigue breakage. Said rotary endodontic file is flexible, easy in operation, simple in design and it reduces 5 torsional as well as cyclic failure. Also, said file can be operated by using available endo-motors.

A tool recognition system recognizes a tool selected for a surgical procedure. The tool includes a distal portion configured to perform at least part of the surgical procedure and a proximal portion including a first electronic module that stores tool-identifying electronic information. A surgical handpiece is configured to receive the tool and includes a second electronic module configured to communicate electronically with the first electronic module when tool is disposed in the handpiece. The first electronic module includes a coil that is configured as a radio-frequency identification (RFID) tag antenna. The second electronic module includes a coil that is configured as a radio-frequency identification (RFID) interrogator antenna. In one embodiment, the first electronic module is a transponder that includes a RFID chip and a RFID antenna. Another embodiment includes a surgical tool recognition system for a drill and the tool includes a file.

An endodontic file for dental nerve treatment according to the present invention comprises: a helical shaped blade that is to be inserted into a root canal, remove dental nerve, and enlarge the root canal; a head that is detachably inserted into a rotary power tool, and a connection part extending by a predetermined length between the head and the blade and having a diameter smaller than that of each of a contact end of the blade and the head. According to the endodontic file for dental nerve treatment, by forming the connection part of the endodontic file with an adjusted thickness or shape such as a thin thickness so that stress generated during rotation of the endodontic file is concentrated on the connection part rather than the blade, the endodontic file is induced to be fractured outside the tooth rather than inside the tooth root, thereby allowing fractured pieces to be easily found and removed.

An endodontic file for dental nerve treatment according to the present invention comprises: a helical shaped blade that is to be inserted into a root canal, remove dental nerve, and enlarge the root canal; a head that is detachably inserted into a rotary power tool, and a connection part extending by a predetermined length between the head and the blade and having a diameter smaller than that of each of a contact end of the blade and the head. According to the endodontic file for dental nerve treatment, by forming the connection part of the endodontic file with an adjusted thickness or shape such as a thin thickness so that stress generated during rotation of the endodontic file is concentrated on the connection part rather than the blade, the endodontic file is induced to be fractured outside the tooth rather than inside the tooth root, thereby allowing fractured pieces to be easily found and removed.