Abstract: A direct view rigid video-endoscope (11) supported by an articulated and compensated arm (2), equipped with a grip (3) crossed by an air flow (92) originating from a generator (93) upstream of the device. The air flow (92) comes out of small holes (8) made in the distal end (28) of the grip (3), at the base of an optical tube (10).

Abstract: A pneumatically operated, simplified valve actuating device for dental equipment, the valve being capable of avoiding an undesirable dripping of dental instruments at the end of the work. The device includes a valve actuating element identified in a four-way valve, whose body includes a housing for a piston connected to a bobbin, wherein said casing is on one side connected to a selector unit and on the other side to a one-way retention valve, capable of receiving pressurized air from a reducer unit and passing it from said selector unit to a constantly pressurized air line coming directly from said reducer unit and to at least one dental instrument.

Abstract: An improved apparatus for carrying out devitalizations and root canal treatments in teeth by means of the use of liquid chemical substances comprises the following steps: putting the pulp chamber and the relevant root canals under vacuum by means of a vacuum vessel; and selectively feeding, in succession, into the pulp chamber and the root canals liquid chemical substances, which are contained inside respective containers under atmospheric pressure; the substances are then drawn into said vacuum vessel. The so treated tooth is then sealed by sucking a sealing paste-like substance into it.

Abstract: A dental bur drill of the type including a tubular handpiece traversed by at least one conduit for delivering compressed air to a rotor which is mounted at an extreme end portion of said handpiece and to the bearing-mounted rotating shaft to which a bur is fitted, wherein the handpiece incorporates a lube-oil container provided with an injection nozzle protruding within a delivery conduit, which conduit communicates with the container at a point upstream of the nozzle.