An instrument for discharging water from the mouth during a dental treatment, has an ovoid, smooth-surface, edge free hollow water collection body with a front surface facing outwardly of the mouth and a rear surface facing toward the throat inlet of the mouth. Two rows of orifices are provided on the rear surface and alternately on the rear and front surfaces for receiving a water mixture from the patient's mouth. A mounting tube projects from the front surface and at at an angle to the axis of the body for connection to a water discharge tube for drawing water from the body.

A saliva ejector including a hollow tube operably associated with a tongue protector. The tube includes first and second ends and a hollow cavity extending therebetween. The tongue protector is permanently secured to the tube by a solder having a minimum composition of 55% silver. The tongue protector is removed from the hollow cavity of the tube. The first end of the tube is adapted to be inserted into a patient's mouth and the second end is adapted to be operably associated with a vacuum system. The tube includes at least one aperture extending transversely therethrough and communicating with the hollow cavity thereby defining a passageway for saliva and the like to pass through. The tube has substantially constant inner and outer diameters.

The present invention relates to a method for the production or manufacture of a suction hose (3) as well as a suction hose (3) for saliva ejection, which suction hose (3) is preformed to an arcuate hose member (14) with two shanks (15, 16) and built-in elastic properties for generating return or resetting forces (K).

A disposal dental saliva ejector with a suction part, at least one suction orifice in the suction part, a holder part and a curved intermediate part has a chin plate displaceably mounted on the holder part. The holder part defines a trough-shaped guiding channel for a duct and the chin plate has a mounting sleeve with a specifically shaped opening enabling the chin plate to occupy a central position and at least one lateral position, and to be temporarily fixed in a selected height position on the holder part.

A combination jaw rest and ejector having a generally hollow wedge-shaped body with upper and lower channels in which a patient's teeth rest and which holds open the patient's mouth. The wedge-shaped body is placed in the patient's mouth on the side opposite that on which work is being performed. A suction hose is attached to the body and the side of the body facing the work site is perforated so that a relatively high volume of air may be drawn into the body through the suction hose, thus drawing, with the air, blood, spray, and debris and substantially preventing the discharge of these materials, which may carry disease transmitting factors, from the patient's mouth. In one embodiment, the body includes perforated salive collecting tube and/or a tongue depressor attached thereto. In a further embodiment, the body includes an illumination source therein to illuminate the interior of the patient's mouth. In another embodiment, a combination jaw rest and ejector includes an illumination source and is provided in a system which includes a combination air flow/light switch. In another embodiment, there is provided an illuminated jaw rest without means for evacuating material from the patient' s mouth.