A dental handpiece comprises an outer sleeve (1), a tool-holding socket (2) for holding a treatment tool (3) arranged in the handpiece, wherein the tool-holding socket (2) has a central axis about which the tool-holding socket (2) can be rotated and/or oscillated and wherein the tool-holding socket (2) is arranged to be driven by a driveshaft of the handpiece driven by a motor (10) housed in the outer sleeve (1). At least one Peltier element (5) is received in the handpiece in thermal contact with the tool-holding socket (2), the Peltier element (5) having a cool face in thermal contact with the tool-holding socket (2) to cool a treatment tool (3) held therein when the tool (3) is driven in rotation or oscillation.

The present invention relates to a device (1) for screwing dental implants (101) which includes: a screw-in tip (2) comprising a machined actuator (20), suitably shaped to drive the attachment screw (100) for attaching the dental implant (101); a handle (3) comprising an end head (30) in which the screw-in tip (2) is mounted and having an actuation control (31) for actuating the rotation of the screw-in tip (2) in an area opposite to said head (30); and a transmission (32) arranged inside said handle (3) connecting the actuation control (31) to the screw-in tip (2).

A dental prophylactic treatment device having: a prophylactic contra-angle handpiece having a handle part extending along a longitudinal axis, a head part adjoining the handle part, a tool holder rotatably disposed in the head part and extending along an axis of rotation, wherein the longitudinal axis of the handle part and the axis of rotation of the head part are disposed at an angle to one another, and a dental tool having a tool shaft and a prophylactic treatment section, wherein the tool shaft extends from a handpiece end of the dental tool over a length up to the prophylactic treatment section, wherein at least a section of the tool shaft is detachably received in the tool holder, so that the dental tool together with the tool holder can be rotated about the axis of rotation, and wherein the length of the tool shaft is a maximum of 10.0 mm.

The present invention relates to a dental and/or surgical instrument (1) comprising a motor that drives a tool by way of a tool holder (24, 25, 27) situated in the head of the dental and/or surgical instrument (1), the tool holder (24, 25, 27) being supported in the head of the dental and/or surgical instrument (1) by at least a first ball bearing (21) and a second ball bearing (22), in which the first ball bearing (21) and the second ball bearing (22) are positioned in a cartridge (10) which is inserted into the head of the dental and/or surgical instrument (1), and in which the cartridge (10) comprises a single bore (80) for the mounting and guiding of both the first ball bearing (21) and the second ball bearing (22). The present invention additionally relates to a cartridge (10) to be inserted into the head of such a dental and/or surgical instrument.

The present disclosure relates to the technical field of medical appliances, and provides a dental handpiece and a head thereof, and a root canal preparation machine. The head of the dental handpiece comprises a head housing; a movement cavity is provided in the head housing; a rotatable movement and a driving gear are provided in the movement cavity; the driving gear is sleeved on one end of the movement, and the movement can move along the axial direction of the driving gear; a reciprocating driving mechanism is further provided in the movement cavity, and the reciprocating driving mechanism is used for driving the movement to perform reciprocating movement along its own axis. Thus, when the dental handpiece of the present disclosure is used for root canal treatment, a root canal file is driven to perform reciprocating movement along its own axis by means of the reciprocating driving mechanism, and manual lifting is no longer required, thereby improving the treatment efficiency of root canal enlargement, reducing the requirements for the patient's cavity space, also facilitating the operation of root canal enlargement treatment, and improving the patient's experience of treatment.

A subassembly for a dental care or surgical handpiece comprises a push button (16) comprising a contact surface (23) adapted to receive a manual pressure able to actuate the push button (16) slidably in a sliding direction. This subassembly further comprises a piece (21) for retaining the push button (16), as well as a bayonet device (28a, 33, 35) able to keep assembled the push button (16) and the retaining piece (21).

A disposable prophy angle is provided, the prophy angle comprising a housing containing a drive shaft and a driven shaft; the drive shaft having a proximal end and a distal end and a longitudinal axis therebetween, the distal end having a substantially conical driving portion and a projection, the proximal end of the drive shaft configured to engage a dental hand piece; and the driven shaft having a driven portion comprising a recess configured for engagement by the projection and/or the substantially conical portion of the drive shaft to oscillate the driven shaft at an oscillation angle greater than 90 degrees. In some embodiments, there is a method of making a disposable prophy angle by overmolding a prophy cup to the prophy angle. In other embodiments, there is a method of using the prophy angle to prevent tooth decay.

A hand instrument, comprising: a tool-holding device for fastening a treatment tool on the hand instrument, a driveshaft for transmitting a driving movement to the tool-holding device and a stroke gear which is designed to induce the tool-holding device in a stroke movement. According to a first embodiment the hand instrument further has a rotary gear which is designed to induce the tool-holding device to a rotational movement, wherein a drive-side element of the rotary gear and a drive-side element of the stroke gear are arranged jointly on the driveshaft. According to a second embodiment the drive-side element of the stroke gear is designed such, that in a complete revolution of the drive-side element of the stroke gear the tool-holding device runs through more than a double stroke. According to another embodiment the drive-side element of the stroke gear is disposed concentrically around an axis of rotation of the driveshaft.

A device including a handpiece connector to which a filter is coupled can be combined with the handpiece and has a connector accommodating therein a filter with an increased cross-sectional area, which can be replaced in a detachable manner, so that it can prevent saliva, blood, bacteria, and foreign substances that may be mixed with the air flowing along inside the handpiece from being exposed to the inside of the patient's oral cavity, causing contamination or infection, and prevent performance degradation and a fault of the handpiece caused by foreign substances accumulating inside the handpiece.

The invention provides for a dental or surgical handpiece with an elongated handle sleeve (110) and a head piece (50) attached to the front end of the handle sleeve (110) that serves to to detachably receive a dental tool as well as for a clamping mechanism (20) formed in the head piece (50) to detachably hold the tool, the clamping mechanism (20) having a push-button (10) for actuating the clamping mechanism (20). The handpiece further has an RFID transponder (5) for identifying the handpiece. The push-button (10) consists of a heat-insulating electrically non-conductive plastic or m ceramic material with a plate-shaped recess that holds the RFID transponder (5). The push-button (10) has a flat round shape so that the RFID transponder (5), because of the equally flat round shape of its coil, can be integrated very well into it. Particularly advantageous ambient electrical conditions can be achieved for the RFID transponder as the push-button (10) is made of an electrically non-conductive material. An advantageous thermal insulation is provided as the push-button (10) is made of a heat-insulating material.