Abstract: The present invention provides a handpiece assembly, including: a handpiece; a fluid tube connected to the handpiece and formed to allow fluid to flow therein; and a swing arm formed to support the fluid tube and be bent in a bending direction as the handpiece is pulled, in which the swing arm include: a continuous member formed to extend continuously along a longitudinal direction; and a plurality of individual members coupled to the continuous member and distinct from each other, and a pair of adjacent individual members of the plurality of individual members defines a separation space to allow the bending of the continuous member along the bending direction, and a dental unit chair including the same.

Abstract: An implant drill according to the present invention includes: a drill body having a threaded cutting edge formed on an outer circumference thereof; and a reverse flute formed in a form of a groove on an outer circumference of the drill body so that cut bone chips are collected, and having a rotational direction and reverse directionality of the drill body so that the collected bone chips are pushed toward an end portion entering an inside of a drilling hole of the drill body by a rotation of the drill body.

Abstract: The present invention provides a dental unit chair, including: a base unit; a seat unit that is installed on the base unit and configured to support a patient; a doctor table that is connected to the base unit and has a handpiece mounted thereon; an arm unit that is connected to the base unit so as to be positioned on an opposite side of the doctor table with respect to the seat unit; and a suction unit that includes a deformable suction line having a fixed end connected to the arm unit while communicating with a suction pump and a movable end movable with respect to the fixed end, the deformable suction line being configured to maintain a deformed shape according to the movement of the movable end and formed to cause a foreign object sucked from the patient to flow in a direction toward the suction pump while sequentially passing through the movable end and the fixed end.

Abstract: The present disclosure relates to an implant device in a shape of a natural tooth with a removable tooth root. The implant device includes an implant body having a tooth root hole formed to penetrate therethrough, an integral tooth root formed by being integrally coupled to the implant body, a removable tooth root formed to extend from the implant body while being inserted along the root hole, and a tooth root fixing unit formed to fix the removable tooth root to the implant body.