An oral cleaning device (100) including: a nozzle portion (30) configured to direct a plurality of liquid droplets; an actuator (120); a mode selector (130); a liquid reservoir (38) wherein in operation liquid is moved from the liquid reservoir into an orifice (36) at the proximal end of the nozzle; a system (12, 13, 14, 24) configured to drive a plunger or piston element (16) toward the proximal end of the nozzle to create a spray of liquid droplets when the moving air comes into contact with the liquid; a control unit (15) configured to control the system to drive the plunger a predetermined number of times in response to a single actuation of the actuator, where the control unit is further configured to accept input from the user via the mode selector, and the mode selector is configured for the user to select a number of liquid bursts that will be delivered in response to a single actuation of the actuator.

Provided is a detection tool that detects a temperature of air. The detection tool includes a detection section that detects a temperature of air released from an air turbine handpiece, and a main body that includes a surface. The detection section is provided on the surface to allow the air turbine handpiece to be brought close to the detection section.

Medical or dental instruments, preferably handpieces, can have different temperature-measuring devices for measuring the temperature in the instrument or of at least a part of the instrument. The temperature-measuring devices can be designed, for example, to measure the temperature contactlessly by detection of electromagnetic radiation or to measure the temperature of an interior of the instrument that can be heated by a heat source. The temperature-measuring devices may be designed, for example, as electrical temperature-measuring devices or may have a magnetic material whose magnetic property is a function of temperature and/or has a temperature-dependent course. The temperature-measuring device may have, for example, an electrical switching device and a signal device wherein the signal device is switched at least between a first signal condition and a second signal condition when a temperature limit value is reached or exceeded or is underrun.

A position monitoring system comprises a single composite fiducial reference comprised of a fiducial key and a fiducial extension rigidly and removably attached to the fiducial key, a tracker for obtaining image information of the surgical site, and a computer system with processor, memory, a software program, and access to a database. The computer has scan data of an area of a surgical patient with the fiducial reference fixed to the area by a multipodal surgical screw fixture. A uniquely identifiable first marker is attached to the fiducial key in a predetermined fixed relative position and orientation. The computer determines the relative position and orientation of the marker based on live image information from the tracker, relates and displays the current position and orientation of the composite fiducial reference to the scan data during a surgical procedure. Further implements at the surgical site may bear further markers that may be tracked. The marker may also serve as fiducial extension, to which end it may be uniquely shaped or marked.

The invention relates to an intraoral device for automated preparation of the teeth with a view to performing partial or peripheral dental restoration, which includes: a splint (1) suitable for being positioned in the mouth of a patient, said splint including a means (13) for maintaining the position thereof inside said mouth; at least one mobile cutting tool (2) combined with said splint; and an electronic management unit which makes it possible to control said cutting tool, characterized in that: said cutting tool (2) is configured so as to cut at least the labial surface of the tooth (D1) to be prepared, said tool being mounted on a mobile carriage (23) moving along a rail (24) attached to the splint (1), opposite the labial surface of the tooth (D1) to be prepared, said rail having a curvature that matches the dentition (D) of the patient; said splint (1) includes at least one 3D digitization tool (4) arranged such as to digitize at least the labial surface of said tooth to be prepared, said digitization tool being connected to the management unit (6) so that the digitized data can be transferred to said management unit; and said management unit is configured so as to control the movement of said cutting tool (2) in accordance with the digitized data.

Methods of conducting guided oral or maxillofacial procedures involve forming a secure, physical interaction between a fiducial marker and a site having an associated object. A virtual plan is formed, detailing the procedure on the object or the site, in registration with the fiducial marker. Movement of a procedure-conducting device is physically regulated with a robot arm responsive to a controller device and with respect to the fiducial marker. The procedure-conducting device interchangeably receives procedural devices and a calibration element. The controller device cooperates with the robot arm to physically regulates movement of the procedure-conducting device, according to the virtual plan and corresponding with physical manipulation of the procedure-conducting device by the user, for the procedural device to conduct the procedure. Tactile feedback is provided to the user, via the procedure-conducting device, if the physical manipulation by the user causes the procedure-conducting device to deviate from the virtual plan.

The present disclosure is directed to systems and methods for electronic control of an operating level of an oral irrigator, particularly when flow from the oral irrigator is paused. Methods for controlling an operational level include: determining an operational level of the oral irrigator, including whether the operational level is a standby mode; receiving sensor data from one or more sensors; determining whether a key sensor indicator is above, below, or at a threshold. If the key sensor indicator is above a threshold, the operational level is changed to standby mode. If the key sensor indicator is at or below the threshold, the operational level remains at the current level. If the key sensor indicator is below the threshold, and the current operational level is the standby mode, the operational level is changed to the operational level set before entering standby mode.

A method and an arrangement for the cleaning of a circumferentially closed canal using a light guide conducting a laser beam, with the entry of the laser beam into the light guide being interrupted when the free end of the light guide is outside of the canal and/or the movement of the light guide within the canal is monitored and if there is no movement or the movement is below a first threshold value then a signal is triggered and/or the laser radiation is turned off or its output is reduced. The turning off of the laser radiation or its reducing is controlled in dependency of at least one signal change and/or a second threshold and/or a signal change relative to the second threshold determined during at least one course of time starting before and including the entry of the light guide into the canal.

Embodiments of the present application provide a dental robot and an oral navigation method. The dental robot comprises a tandem positioning arm, wherein the tandem positioning arm comprises a pedestal, several positioning arms and a jacket, and the jacket is configured to clamp surgical instruments; the pedestal, the several positioning arms and the jacket are connected in series in sequence by rotary joints; a joint angle measuring device is mounted at each of the rotary joints. According to the dental robot and the oral navigation method provided by the present application, by the lightweight of the tandem positioning arm, the volume and weight of the dental robot system are reduced, which improves the practicality of the dental robot in surgical operations.