An ultrasonic back suction-integrated tooth cleaner includes a tooth cleaner host and a tooth cleaner handle. The tooth cleaner host includes a pipeline structure inside. Head ends of a water supply pipeline and a back suction pipeline both extend out of a housing of the tooth cleaner host and are connected to a tail end of the tooth cleaner handle. In the present invention, a back suction pipeline is added to an existing tooth cleaner host, so that the host is adapted to an integral tooth cleaner handle with a back suction function. A flow rate in the water supply pipeline is regulated by using an electromagnetic valve, so that a requirement for accurately controlling a water output volume is satisfied. The tooth cleaner handle is ingeniously designed with a back suction pipeline inside the existing ultrasonic handle, so that an aerosol is effectively controlled during ultrasonic tooth cleaning.

An ultrasonic back suction-integrated tooth cleaner includes a tooth cleaner host and a tooth cleaner handle. The tooth cleaner host includes a pipeline structure inside. Head ends of a water supply pipeline and a back suction pipeline both extend out of a housing of the tooth cleaner host and are connected to a tail end of the tooth cleaner handle. In the present invention, a back suction pipeline is added to an existing tooth cleaner host, so that the host is adapted to an integral tooth cleaner handle with a back suction function. A flow rate in the water supply pipeline is regulated by using an electromagnetic valve, so that a requirement for accurately controlling a water output volume is satisfied. The tooth cleaner handle is ingeniously designed with a back suction pipeline inside the existing ultrasonic handle, so that an aerosol is effectively controlled during ultrasonic tooth cleaning.

A docking and charging station (100) for use in conjunction with a hand-held fluid droplet appliance (10) for dental cleaning, the docking and charging station (100) comprising a charging base (102) for recharging the hand-held fluid droplet appliance, a reservoir (110) for holding a larger amount of liquid (112) than can be held in a chamber of the hand-held fluid droplet appliance, and a docking refilling alignment mechanism for properly aligning and securing the hand-held fluid droplet appliance in the cradle (160) of the docking and charging station when the hand-held fluid droplet appliance is mounted into the docking and charging station to prevent spillage, leaking or non-refilling of the appliance from the reservoir if there is not proper alignment.

A dental apparatus is disclosed. The dental apparatus can comprise a pressure wave generator to be disposed at a treatment region of a tooth. The pressure wave generator can include an opening to deliver a flowable filling material to the treatment region. The apparatus can include a reservoir for supplying the filling material to the pressure wave generator. The pressure wave generator can be configured to generate pressure waves through the treatment region to cause the filling material to substantially fill the treatment region.

An oral irrigator delivers a flow rate as a series of pulses, each pulse having an amplitude which increases progressively over at least the majority of the time duration of the pulse. Each pulse is intended for the cleaning of a single interdental space.

An oral irrigator delivers a flow rate as a series of pulses, each pulse having an amplitude which increases progressively over at least the majority of the time duration of the pulse. Each pulse is intended for the cleaning of a single interdental space.

A nozzle (14) for use with a personal care device (10), comprising: (i) a nozzle housing (50/52) defining a central channel (54) through which a stream of liquid and/or air is directed, and comprising a housing orifice (56) at the end of the central channel; (ii) a magnetorheological liquid housing (58) located over at least a portion of the nozzle housing at the housing orifice, and comprising a tip with an adjustable diameter orifice (59) through which the stream of liquid and/or air exits, wherein the adjustable orifice is adjustable between at least a first diameter and a second diameter; and (iii) one or more magnets (62) configured to control magnetorheological liquid (60) in the magnetorheological liquid housing to adjust between the at least first diameter and second diameter of the adjustable diameter orifice.

An apparatus for cooling tissues which are treated with an energy-based device, such as a laser, is disclosed. The apparatus comprises a spray nozzle which generates an atomized liquid spray for the treatment area, wherein the atomized liquid spray is based on a mixture of liquid and gas. Further, the spray nozzle comprises at least one liquid outlet which ejects a liquid, and at least one gas outlet which ejects a gas stream. Besides, the apparatus for cooling comprises at least one delivery means for delivering pressurized gas to the spray nozzle; and a pumping means for the liquid, wherein the pumping means is configured to operate in pulses.

An apparatus for cooling tissues which are treated with an energy-based device, such as a laser, is disclosed. The apparatus comprises a spray nozzle which generates an atomized liquid spray for the treatment area, wherein the atomized liquid spray is based on a mixture of liquid and gas. Further, the spray nozzle comprises at least one liquid outlet which ejects a liquid, and at least one gas outlet which ejects a gas stream. Besides, the apparatus for cooling comprises at least one delivery means for delivering pressurized gas to the spray nozzle; and a pumping means for the liquid, wherein the pumping means is configured to operate in pulses.

The present disclosure provides an oral irrigator having water spray switching function, which includes a body, a nozzle and a path switching mechanism. The nozzle is provided with a first path and a second path, and the path switching mechanism is configured to communicate one of the first path and the second path with an outlet end of a piston assembly inside the body of the oral irrigator, and disconnect the other one of the first path and the second path from the outlet end of the piston assembly. The nozzle has a water outlet communicating with the first path and the second path. Water sprays from the water outlet are different when the first path or the second path is communicated with the outlet end of the piston assembly inside the body. The oral irrigator of the present disclosure can realize water spray switching without changing the nozzle.