Systems and methods for using a liquid jet apparatus for dental treatments are disclosed. In one implementation, the liquid jet apparatus may include a handpiece configured to deliver a high velocity liquid jet to a desired location in the mouth of a patient. The handpiece may include a positioning member having a channel through or along which the jet can propagate. The positioning member may have a distal end portion configured to be at least partially disposed in a pulp cavity, canal space, or opening in the tooth under treatment. During operation, the jet may impact an impingement surface of the distal end portion of the positioning member and be deflected as a spray through one or more openings in the distal end portion. The liquid jet apparatus may be used for root canal treatments.

This disclosure is directed to systems and methods for automatically resetting pause control on an oral irrigator. The methods use a resilient device which stores potential energy when the oral irrigator is turned on or the pause control feature is turned off. The stored potential energy is then released and switches the pause control feature on when the oral irrigator is turned off or placed on its stand. The pause control assembly includes a slider coupled to the valve, where the slider has a first protrusion; a return which makes contact with a first protrusion of the slider; and a stopper, which in the closed position prevents the return from moving. The automatic pause control reset can also include a pressure plate and a pressure chamber which respond to a change in fluid pressure to permit the opening of a pause control valve.

This disclosure is directed to systems and methods for automatically resetting pause control on an oral irrigator. The methods use a resilient device which stores potential energy when the oral irrigator is turned on or the pause control feature is turned off. The stored potential energy is then released and switches the pause control feature on when the oral irrigator is turned off or placed on its stand. The pause control assembly includes a slider coupled to the valve, where the slider has a first protrusion; a return which makes contact with a first protrusion of the slider; and a stopper, which in the closed position prevents the return from moving. The automatic pause control reset can also include a pressure plate and a pressure chamber which respond to a change in fluid pressure to permit the opening of a pause control valve.

The teeth cleaner and system described in this present invention utilizes a mouthpiece that holds an ultrasonic transducer inside the oral cavity. The holding force of the transducer do not impede the ultrasonic vibrations. The mouthpiece ensures adequate cleaning fluid surrounds all teeth in the mouth and positions the cavitation bubble generating ultrasonic transducer adjacent to all teeth. The user changes to a face-down posture, all teeth can easily be submerged in the cleaning liquid and can be cleaned by cavitation bubbles with similar cleaning efficacy on both inside and outside teeth surfaces at the same time. Consumers and hygienists can use this present invention as an alternative tool in routine preventive dental care activities.

The teeth cleaner and system described in this present invention utilizes a mouthpiece that holds an ultrasonic transducer inside the oral cavity. The holding force of the transducer do not impede the ultrasonic vibrations. The mouthpiece ensures adequate cleaning fluid surrounds all teeth in the mouth and positions the cavitation bubble generating ultrasonic transducer adjacent to all teeth. The user changes to a face-down posture, all teeth can easily be submerged in the cleaning liquid and can be cleaned by cavitation bubbles with similar cleaning efficacy on both inside and outside teeth surfaces at the same time. Consumers and hygienists can use this present invention as an alternative tool in routine preventive dental care activities.

Various apparatus and methods for cleaning teeth and gingival pockets are disclosed herein. A fluid platform can include a pressure wave generator configured to propagate pressure waves through a treatment fluid. The pressure waves may be sufficient to remove undesirable dental deposits from a treatment tooth, neighboring gums, and/or spaces between the tooth and gums.

Various apparatus and methods for cleaning teeth and gingival pockets are disclosed herein. A fluid platform can include a pressure wave generator configured to propagate pressure waves through a treatment fluid. The pressure waves may be sufficient to remove undesirable dental deposits from a treatment tooth, neighboring gums, and/or spaces between the tooth and gums.

An oral irrigator has a base unit housing a motor and a pump, a removable reservoir defining a reservoir cavity configured to mechanically couple to a top surface of the base unit and fluidly couple the reservoir cavity to the pump, and a belt drive assembly connecting the motor to the pump. The belt drive assembly includes a drive pulley connected to an output shaft of the motor, a driven pulley spaced apart from the drive pulley and mechanically connected to a piston that drives the pump, and a continuous belt connecting the drive pulley to the driven pulley. A handle for the oral irrigator may include a housing defining a slot formed in an outer wall of the housing.

An oral irrigator has a base unit housing a motor and a pump, a removable reservoir defining a reservoir cavity configured to mechanically couple to a top surface of the base unit and fluidly couple the reservoir cavity to the pump, and a belt drive assembly connecting the motor to the pump. The belt drive assembly includes a drive pulley connected to an output shaft of the motor, a driven pulley spaced apart from the drive pulley and mechanically connected to a piston that drives the pump, and a continuous belt connecting the drive pulley to the driven pulley. A handle for the oral irrigator may include a housing defining a slot formed in an outer wall of the housing.

An oral irrigator, comprising: a first pumping assembly (200) used for pumping a first working medium for oral irrigation; a second pumping assembly (300) used for pumping a second working medium for oral irrigation; and a nozzle (400) in fluid communication with output ends of the first pumping assembly (200) and the second pumping assembly (300), the first working medium for oral irrigation and/or the second working medium for oral irrigation being ejected by means of the nozzle (400).