A dental suction device for suction of fluid deflections and aerosols produced by the effect of a drill or laser of a dental instrument inside the oral cavity, and attachment for removably attaching the dental suction device to the dental instrument, characterised in that the dental suction devices comprises a tubular body for suctioning fluid that forms a first outer cavity to receive a working head of the dental instrument, wherein a distal portion (B) of the tubular body extends radially so as to at least partially surround a perimeter of the first outer cavity housing the working head of the dental instrument, wherein a wall of the distal portion (B) of the tubular body incorporates at least one suction orifice.

An oral irrigator handle including a housing and a first fitting, the first fitting including a first fitting inlet in fluid communication with a handle inlet in fluid communication with a fluid source and a first fitting outlet in fluid communication with the first fitting inlet. The handle includes a seal positioned around the first fitting and between the first fitting inlet and the first fitting outlet. A second fitting includes a second fitting inlet in fluid communication with the first fitting outlet and a second fitting outlet in fluid communication with the second fitting inlet. A bottom portion of the second fitting seats on a portion of the first fitting so that the seal engages an interior surface of the second fitting, a flow passage is coupled to the second fitting and in fluid communication with the second fitting outlet.

A waterway control device is provided, which includes a valve body, a control member, a reset member and a push button. The valve body is provided with an accommodating cavity. The control member is arranged in the accommodating cavity. One end of the reset member abuts against the control member, and the other end of the reset member abuts against a wall of the accommodating cavity. The push button is movably arranged on the valve body, and provided with an introducing member. The introducing member is in sliding fit with the control member, and configured to cause the control member to move from a first position to a second position. The reset member enables the control member to restore and remain at the first position. The control member is capable of blocking the accommodating cavity at the first position, and opening the accommodating cavity at the second position.

A device for preventing suck back of oral secretions into air-driven dental handpiece when the air-driven dental handpiece is stopped. The device includes a high-pressure valve to close a high-pressure inlet port and a low-pressure valve to close a low-pressure inlet port or an exhaust air outlet. The device further includes an actuating member that closes the high-pressure valve. High pressure air of the air-driven dental handpiece can push back the high-pressure valve to open state. The low-pressure valve is coupled to the high-pressure and moves with it. A compression member interrupts the low-pressure valve and the high-pressure valve, wherein the compression member causes the low-pressure valve to close first while allowing the high-pressure valve to keep moving further to close the first path with a time delay.

A dental handpiece system includes a dental handpiece for operating a dental burr and providing a stream of water to the dental burr for cooling a tooth being acted upon by the dental burr. The dental handpiece further includes a flush water port for providing a flush water stream that is directed away from the dental burr to allow the dentist to flush a work site in a patient's mouth. The dental handpiece can also include an air outlet for providing a stream of air that is also not directed to the dental burr and that can be used to dry other dental instruments as well as work sites in the patient's mouth.

The handpiece includes; an outer housing of a bar shape; a cylindrical core inserted into the outer housing and having an air hole and a water hole; pipes respective inserted into the air hole and the water hole of the core; a rotor made with a cylindrical magnetic material and inserted into the core; cylindrical support rings forcedly fit to both sides of transfer shafts of the rotor; a pair of bearings respectively disposed at the front side and the rear side of the support rings; a coupling disposed in front of the rotor; a front housing joined to the front of the outer housing; a front cap disposed at the rear of the core; a rear cap disposed at the rear of the front cap and having a power supply terminal disposed at one side thereof; and a rear housing joined to the rear of the outer housing.

An apparatus for endodontic treatment, comprising: a nozzle connected to a fluid source comprising: a tip small enough to be inserted into a pulp chamber of a tooth; an inner geometry which forms a flow parameters including non-axial flow direction of nozzle fluid flowing through the inner geometry such that discharge fluid discharged from the inner geometry increase rotation of root canal fluid within a root canal sufficiently to remove tissue from the root canal.

A dental laser system for treatment of hard and/or soft tissue includes a main chamber housing optical and primary fluid supply subsystems, for directing a laser beam and fluid to a treatment area. A hand piece affixable to the main chamber, includes mating optical and secondary fluid supply subsystems. The hand piece can be rotatable or re-orientable about an optical axis within the hand piece. A lock can maintain a selectable angular orientation of the hand piece relative to the main chamber. A coupling can maintain a fluidic communication between the primary and secondary fluid supply subsystems even when the hand piece is rotated or re-oriented. A sensor and controller can sense a selected angular orientation of the hand piece and adjust the main optical subsystem according to the sensed angular orientation, to align the two optical subsystems. The laser may be controlled using a variable speed foot pedal.

Systems and methods for cleaning teeth by removal of dental biofilm. In one illustrative embodiment, a custom fit tray that fits over the teeth and seals against the gum of a mammal. A number of ports are embedded in the tray, each in fluid communication with a hose or line supplied with either a vacuum or an irrigant/fluid source. A small space between the tray and the teeth provides for fluid to flow around the teeth. A router may be connected to both an irrigant fluid supply reservoir and a vacuum pump to direct either fluid or vacuum to the various hoses with the routing changing over time for optimum cleaning. Air may be injected into the cleaning fluid in varying amounts, to create bubbles, water droplets, and/or boluses of the cleaning fluid to increase and focus the hydrodynamic forces of the fluid upon reaching the teeth.

A dental treatment system can include a console, a tooth coupler, and an interface member that provides at least one of fluidic, electrical, mechanical, and data communication between the tooth coupler and the console. The tooth coupler (which may comprise a handpiece or a treatment cap) can act as a working end of the system to administer a suitable treatment procedure, such as a cleaning procedure, an obturation procedure, a restoration procedure, etc. The tooth coupler can removably engage the interface member such that the clinician can easily engage and disengage the tooth coupler and interface member.