Patent ID: 8863346

Claim:
A hands-free dental appliance, comprising: a mouthpiece assembly ( 1 ) for receiving teeth having a contact system for cleaning the surfaces of the teeth of a user; a power assembly ( 28 ) which, when activated, operates the mouthpiece assembly so as to produce movement of the contact system to clean the surfaces of the teeth; and a system ( 30 ) which is part of the appliance for grounding the appliance to the user's mouth or head structure, providing a stable position of the appliance in the mouth while allowing the mouthpiece assembly to move to produce cleaning of the teeth without the user having to hold or manipulate the appliance, wherein the grounding system includes a static frame member ( 30 ) with bite portions ( 32 , 34 , 36 ) for direct contact with the teeth, the static frame being separate from the mouthpiece assembly and rigidly connected to the power assembly such that it does not move when the power assembly is activated for cleaning of the teeth.