Abstract: A device for the sterilization of a dental, medical or similar instrument comprising a chamber (4), preferably frusto-conical in shape or downward tapering, with two walls (1, 2) separated by a hollow space, subdivided along axis into smaller spaces (3', 3", 3'", 3""), connected to the interior of the chamber by rings of holes (5', 5", 5'", 5"") with downward pointing jets, and passing at a distance (e) from the axis (K) of the chamber (4). These jets sterilize the entire internal and external surface area of the instrument along it length. The pressure upstream of the holes (5', 5", 5'", 5""), their diameter and direction, ensures that the lower and more contaminated part of the instrument is more thoroughly treated.

Abstract: A cleaning device to be used during dental surgery and dental treatments for cleaning, disinfecting and drying instruments, in particular turbine drills, comprising a box-container, including a vertical cylindrical chamber delimited by a tubular body, provided with an opening in the top wall of said container, body which is formed by three coaxial elements assembled to each other and which can be disassembled. The chamber is barred at the bottom by a removable grate which is designed to support the instrument during the cleaning operations, which are performed by means of jets of pressurized water and air fed through nozzles, while lower nozzles deliver pressurized air containing a nebulized disinfectant. The discharge of dirty water used for washing is carried on through the waste-pipe and is promoted by at least one jet of pressurized air, which creates a suction effect towards the bottom of the chamber and at the same time prevents drops from coming out through the opening.