Abstract: An ultrasonic dental tooth treatment system including an ultrasonic dental handpiece, a fluid reservoir housing and a power control housing. The reservoir housing is supported by the control housing. The reservoir housing encloses two containers which are connected to the selector valve. The selector valve is connected to a control housing conduit which is connected to the handpiece. The control housing encloses a power control circuit which is connected to the handpiece. In a preferred embodiment of the invention a fluid dispenser includes at least one readily removable reservoir container supported by a reservoir housing having a pivotable cover and a fluid control valve. The cover is pivotable between an open position and a closed position. The valve is closed by the cover when the cover is in its open position.

Abstract: A stacking system includes a reservoir housing, a base housing and a handpiece. The reservoir housing supports a readily removable container. The reservoir housing has feet and a pivotable cover, which in closed position encloses two containers which are connected by conduits to a valve. Each container has a cap with a first and a second cap connector. Each cap connector is connected to a housing connector. The handpiece is connected by conduits through the base housing to the containers. The cover is pivotable between an open position and a closed position. The cover, in closed position, prevents the cap from moving sufficiently for the cap connector to disengage from the housing connectors. The reservoir housing is supported by and positioned above the base housing. The base housing has an upper face. The upper face has grooves. The feet are positioned in the grooves.

Abstract: The invention provides a method of operating a dental scalar system having a vibrating scaling tip by continuously monitoring the amplitude and frequency of vibration of the tip which provides scaling power to a tooth in a patient's mouth. The amplitude and frequency of vibration of the tip is continuously adjusted to maintain a substantially constant scaling power. Preferably, the insert is vibrated at its resonant frequency and the system provides a substantially constant tip motion while the user varies the applied pressure between the tip and the tooth.