A dental cleaning appliance includes a handle, a fluid reservoir for storing a working fluid, a fluid delivery system for receiving working fluid from the fluid reservoir, and for delivering a burst of working fluid to the teeth of a user, and an external collar comprising a fluid port, the collar being moveable relative to the handle between a first position in which the fluid port is exposed to allow the fluid reservoir to be replenished, and a second position in which the fluid port is occluded.

Embodiments of the present invention comprise a powered toothbrush comprising a bristle head, an outer gear, and a plurality of bristles. Both the bristle head and the outer gear may comprise a distal end, a proximal end, and a center. The distal end of the bristle head may mate with the proximal end of the outer gear. The outer gear may rotate about a first axis of rotation. The mating between the bristle head and the outer gear may cause the bristle head to orbit the first axis of rotation via one or more bristle paths while simultaneously completing one or more rotary movements about a second axis of rotation, which may move along the bristle paths with the bristle head.

Embodiments of the present invention comprise a powered toothbrush comprising a bristle head, an outer gear, and a plurality of bristles. Both the bristle head and the outer gear may comprise a distal end, a proximal end, and a center. The distal end of the bristle head may mate with the proximal end of the outer gear. The outer gear may rotate about a first axis of rotation. The mating between the bristle head and the outer gear may cause the bristle head to orbit the first axis of rotation via one or more bristle paths while simultaneously completing one or more rotary movements about a second axis of rotation, which may move along the bristle paths with the bristle head.

A brushing accessory, including a first member, including a hole and a brush fixed thereto, and a second member, including a motor for rotating a first elliptic gear, a second elliptic gear interlaced with the first elliptic gear, and a pin extending from the second elliptic gear into the hole of the first member, thereby moving the brush on a user's body as a function of changing locations of the pin, the locations changing as a function of the interlacing of the elliptic gears.

A brushing accessory, including a first member, including a hole and a brush fixed thereto, and a second member, including a motor for rotating a first elliptic gear, a second elliptic gear interlaced with the first elliptic gear, and a pin extending from the second elliptic gear into the hole of the first member, thereby moving the brush on a user's body as a function of changing locations of the pin, the locations changing as a function of the interlacing of the elliptic gears.

A brushing device including a motor having an eccentric drive shaft, an output shaft operably connected to the motor, and a power train assembly coupled between the eccentric drive shaft and the output shaft. The power train converts rotation of the eccentric drive shaft into an oscillating movement of the output shaft. The power train includes one or more conservation features that absorb energy when the output shaft rotates in a first direction and reapply energy to the output shaft when it rotates in a second direction.