Patent ID: 7785106

Claim:
A dental cleaning device, comprising: a rotary dental instrument comprising a switch; and a prophy chip comprising: a cup-shaped core with semispherical canopy, cylindrical, cupped, conical, inverted conical, or disk profile, the core comprising an exterior wall and a hollow interior region; a shaft containing a connecting means for connecting the prophy chip to the dental rotary instrument to avoid vibration around a rotation axis of the core during rotation; a hydrophilic grindstone sponge covering the exterior wall of the core, wherein the hydrophilic grindstone sponge comprises a grindstone therein; and a latch plate fixing the hydrophilic grindstone sponge to the core; wherein the prophy chip is mounted on a top of the dental rotary instrument for cleaning, polishing, and burnishing teeth, and the hydrophilic grindstone sponge is immersed in water prior to operation or absorbed saliva during operation without using a polishing paste to dissipate heat generated by friction, and wherein the switch is configured to activate the dental rotary instrument to drive rotation of the prophy chip.