Importance

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Abstract

A system of treating teeth or associated tooth structure using an abrasive-laden fluid stream provides fluid at high pressure to a manifold with selectively operable valves to deliver fluid at a selected pressure to a mixer for the fluid and abrasive and delivery to a device for application to a patient's mouth. Priming air at low pressure pressurizes the mixer. An alternate air path bypasses the mixer. A selective control delivers a stream of fluid or fluid and abrasive to the tooth or tooth structure. Upon termination of treatment, pure air is diverted through a purge line to purge the system of abrasive. A vacuum is selectively operable to remove abrasive and debris from the mouth during and after the abrasive treatment. The abrasive delivery device includes a hand-held nozzle having ports operable by the fingers for control. The vacuum includes a rigid, disposable collection chamber for sterile disposal of the abrasive and debris and has a common filter for the purge circuit and for removal of abrasive and debris from the mouth. Connection to the dental office suction system or a water powered venturi provides suction. Pressure regulation and relief insures instantaneous change from one pressure level to the next.

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First Claim