An oral cavity cleaner according to an embodiment of the present disclosure includes: a handle including an inflow path through which washing water flows and a discharge flow path through which contaminated water sucked from an oral cavity flows; a mouthpiece configured to spray the washing water supplied through the handle into the oral cavity; and a core suction part having an edge surrounded by the mouthpiece, the core suction part being configured to suck the contaminated water that has been discharged from the mouthpiece and washed teeth.

An oral cavity cleaner according to an embodiment of the present disclosure includes: a handle including an inflow path through which washing water flows and a discharge flow path through which contaminated water sucked from an oral cavity flows; a mouthpiece configured to spray the washing water supplied through the handle into the oral cavity; and a core suction part having an edge surrounded by the mouthpiece, the core suction part being configured to suck the contaminated water that has been discharged from the mouthpiece and washed teeth.

An oral cavity cleaner according to an exemplary embodiment of the present disclosure includes: a handle including an inflow path through which washing water flows and a discharge flow path through which contaminated water sucked from an oral cavity flows; a mouthpiece connected to the inflow path and configured to spray the washing water into the oral cavity; a core suction part configured to suck the contaminated water that has been discharged from the mouthpiece and washed teeth; and a suction pipe in which the contaminated water flows, the suction pipe being disposed in the mouthpiece and configured to connect the core suction part and the handle.

An oral cavity cleaner according to an exemplary embodiment of the present disclosure includes: a handle including an inflow path through which washing water flows and a discharge flow path through which contaminated water sucked from an oral cavity flows; a mouthpiece connected to the inflow path and configured to spray the washing water into the oral cavity; a core suction part configured to suck the contaminated water that has been discharged from the mouthpiece and washed teeth; and a suction pipe in which the contaminated water flows, the suction pipe being disposed in the mouthpiece and configured to connect the core suction part and the handle.

An oral cavity cleaner according to an embodiment of the present disclosure includes: a mouthpiece configured to spray washing water into an oral cavity; a core suction part configured to suck contaminated water, in which the washing water and saliva are mixed, from the inside of the oral cavity; and a handle including an inflow path through which the washing water flows, a discharge flow path through which the contaminated water flows, and a diffusion flow path configured to define a space in which the washing water flows in a direction toward at least one of upper and lower sides of the discharge flow path, the diffusion flow path being configured to supply the washing water to the mouthpiece.

An oral cavity cleaner according to an embodiment of the present disclosure includes: a mouthpiece configured to spray washing water into an oral cavity; a core suction part configured to suck contaminated water, in which the washing water and saliva are mixed, from the inside of the oral cavity; and a handle including an inflow path through which the washing water flows, a discharge flow path through which the contaminated water flows, and a diffusion flow path configured to define a space in which the washing water flows in a direction toward at least one of upper and lower sides of the discharge flow path, the diffusion flow path being configured to supply the washing water to the mouthpiece.

The present invention provides dental amalgam recycling systems, useful for recycling particles from a dental liquid effluent drawn, for example, from a suctioning device.

The present invention discloses a negative-pressure oral apparatus capable of relieving discomfort of soft tissues in the oral cavity and improving fixation of the oral apparatus to prevent the oral apparatus from falling off due to mouth opening. The oral apparatus is compact and elastic so that it fits various shapes and sizes of the oral cavity and is easy to be put on and taken off to provide convenience and safety to the user. In another embodiment, a method for maintaining a negative oral pressure and collecting liquid by coupling the oral apparatus to a liquid collecting apparatus capable of effectively providing the oral cavity with a negative pressure to expel liquid in the oral apparatus and deliver the liquid to an absorbing element in the liquid collecting apparatus so as to prevent liquid leakage or contamination.

A dental device to be placed in the oral cavity between the lower teeth and the tongue for use as a combined saliva/fluids ejector and tongue deflector/retractor in dental treatments, comprising: a substantially flat head portion with hollow tubing on a portion of its periphery, and suction holes (preferably oval-shaped and protected from soft tissue entrapment by raised ribs) and in communication with the hollow tubing; a body portion provided with a bore and a ratchet mechanism, the bore in communication at its upper end with the hollow tubing and at its lower end with a suction system; and an arm having a collar adapted to adjustably engage with and disengage from the teeth of the ratchet mechanism. The cross sections of the collar and ratchet mechanism portion of the body are essentially square in shape.

A toothbrush system configured to be coupled to an external suction source. The toothbrush system includes a shaft with a main body with a first end and a second end, and a bristle array and a suction port arranged at the second end. The bristle array and the suction port both extend away from the shaft so that an opening of the suction port is proximal to a distal end of the bristle array. The shaft also includes a stem arranged at the first end. The stem includes a passageway that extends through the main body to provide a fluid connection to the suction port, and is configured to be coupled to the external suction source. Also, the handle is removably coupled to the shaft and includes a drive system operably coupled to the bristle array to actuate motion of the bristle array.