The invention provides a mouthpiece for dental cleaning system and the dental cleaning system itself. The mouthpiece has a base and inner and outer arches. An actuator is for applying motion to the inner arch and/or the outer arch, relative to the base. A coupling arrangement converts motion of one of the inner and outer arches in one direction relative to the base to motion in an opposite direction relative to the base of the other of the inner and outer arches. By forming the mouthpiece as a central stationary base enveloped by two contour-following and moving arches, an anti-phase brushing motion at opposite tooth sites along the tooth arch is enabled, giving increased reach toward the molars as well as a reduction in device vibration in the mouth.

An oral cleaning and/or treatment unit (10), e.g. a head for an oral cleaning and/or treatment device, includes electrodes (18a, 18b) for emitting RF energy for providing an oral cleaning and/or treatment function. The unit includes at least a first (14a) and second (14b) protruding member, which protrude in a same general direction away from a base or support structure (12). Each comprises one or more electrodes for generating an RF field. The protruding members are adapted to have a flexibility that permits the member to resiliently bend or deform in a direction perpendicular the direction of extension of the member out of the support surface (‘lateral direction’).

A drive mechanism for electric toothbrush includes a grip housing and a pivot housing mounted within the grip housing. The pivot housing has a fixed portion, a movable portion with a free end spaced from the fixed portion, and bridge that connects the fixed and movable portions and defines a fulcrum. A motor is mounted within the pivot housing, and an eccentric weight extends from the motor with the motor operable to rotate the eccentric weight. A brush shaft is attached to the pivot housing opposite the free end. A power source is adapted to activate the motor and rotate the eccentric weight, such that the free end of the pivot housing is driven to move by the movement of the eccentric weight, the pivot housing pivots at the fulcrum, and the brush end of the brush shaft oscillates about the fulcrum.

A three-way mechanical toothbrush includes an angular mechanical toothbrush having a plurality of switches and a charging port disposed on a first end and a toothbrush head disposed on a second end. The toothbrush head provides for three (3) discrete areas of brush bristles with each area capable of multiple directional brushing action.

A dental cleaning appliance includes a handle, a fluid reservoir for storing a working fluid, and a fluid delivery system for receiving working fluid from the reservoir, and for delivering working fluid to the oral cavity of a user. The fluid reservoir includes a fluid port from which fluid is dispensed from the fluid reservoir, and through which the fluid reservoir is replenished. The fluid reservoir is moveable along the handle between a first position in which the fluid port is connected to the fluid delivery system, and a second position in which the fluid port is exposed to allow the fluid reservoir to be replenished.

A dental cleaning appliance includes a handle and a fluid delivery system. The fluid delivery system includes a nozzle for delivering a burst of working fluid to the teeth of a user. A contact member for engaging the teeth of the user is moveable relative to the nozzle as the appliance is moved along the teeth of the user. A sensor provides an output which varies with movement of contact member relative to the nozzle. A control circuit actuates the delivery of working fluid to the teeth of the user depending on the output from the sensor.

A dental cleaning appliance includes a handle, a fluid reservoir for storing a working fluid, and a fluid delivery system for receiving working fluid from the reservoir, and for delivering working fluid to the oral cavity of a user. The fluid reservoir includes a fluid port from which fluid is dispensed from the fluid reservoir, and through which the fluid reservoir is replenished. The fluid reservoir is moveable between a first position in which the fluid port is connected to the fluid delivery system, and a second position in which the fluid port is exposed to allow the fluid reservoir to be replenished. Magnetic forces urge the fluid reservoir towards its first position.

Described herein is an electronic dual-head teeth cleaning appliance that facilitates simultaneous front and rear surface cleaning of individual teeth. The teeth cleaning appliance is rechargeable, portable, lightweight, and electronic. In particular, the appliance is equipped with an ergonomic axially rotating handle, speed settings, and may have rubber bristles on the brush heads for massaging the gums during teeth cleaning. The bristles may have side-to-side or rotational action.

An electrically driven device includes an electric motor with a drive shaft having a first rotary axis and a drive pin eccentrically thereto, and a driven shaft having a second rotary axis and mounted for pivoting motion. The driven shaft is coupled to the drive shaft by a scotch yoke mechanism, converting a rotary motion of the drive shaft into a reciprocating pivoting motion of the driven shaft. The scotch yoke mechanism includes a cross slider having a sliding support extending perpendicular to the first rotary axis and receiving the drive pin either directly or by a sliding block having a bearing receiving the pin. The cross slider is axially guided to move in an axial direction perpendicular to the first rotary axis and to the extension of the sliding support. The driven shaft is coupled to the cross slider by a pivotable crank arm, thereby converting a rotary motion of the drive shaft into a reciprocating motion of the driven shaft.

A dental cleaning appliance includes a handle, a fluid reservoir for storing a working fluid, and a fluid delivery system for receiving working fluid from the reservoir, and for delivering working fluid to the oral cavity of a user. The fluid reservoir includes a fluid port from which fluid is dispensed from the fluid reservoir, and through which the fluid reservoir is replenished. The fluid reservoir is moveable along the handle between a first position in which the fluid port is connected to the fluid delivery system, and a second position in which the fluid port is exposed to allow the fluid reservoir to be replenished.