A water purification apparatus includes a water inlet; a medicine mixing device in fluid communication with the water inlet; and a water outlet interconnected to the medicine mixing device and a dental treatment center. The medicine mixing device includes a medicine storage for storing antiseptic solution, a mixing unit interconnected to the water inlet, the water outlet, and the medicine storage, and a controller interconnected to the water inlet and the medicine storage. The controller includes a sensor and a microprocessor. The controller sends the antiseptic solution from the medicine storage to the mixing unit and controls a volume of water flowing from the water inlet to the mixing unit. The microprocessor instructs the controller to control a volume of the antiseptic solution supplied from the medicine storage to the mixing unit based on a signal sensed by the sensor.

A self-cleaning suction device has a user's suction end that self-sanitizes externally and internally before and after use, as well as self-sanitizes internally during use. A cover opens to reveal the user's suction end within a containment unit. As the cover opens, the suction end travels from a lower chamber, proceeds through a middle chamber of a sanitizing agent, and is presented for use. After suction is complete, the suction end retracts through an upper chamber with, a scraping feature that removes debris from the outer surface of the mouthpiece, and proceeds down through the middle chamber of a sanitizing agent and a scraping feature that removes debris and the sanitizing agent from the outer surface of the user's suction end. Upon the sealing closure of the cover, the upper and middle chambers are flushed with a sanitizing agent, which is suctioned away along with any collected debris. The user's suction end resides within a lower chamber and can be decontaminated by a UV-C light entering into the lower chamber and/or corresponding chambers. The suction device can also include a liquid-hydration delivery system.

A method and system to improve asepsis during dental delivery includes a self-contained water delivery apparatus and a vacuum apparatus both of which provide disinfection of biohazards occurring during dental procedures. A UVC LED light emitting unit, with sanitary connections, may be releasably connected to the delivery and vacuum apparatus for improved maintenance and cleaning. A reservoir egress connector provides releasable engagement, fluid agitation, and unrestricted UV light transmission to improve water quality, reduce biofilm water contamination, reduce cross contamination, and reduce the potential spread of pathogens. The mounting system for the UVC LED light unit allows the apparatus to be used to decontaminate portable dental delivery units and vacuum units upon closure. A reflective interior of the cases improves irradiation of the enclosed system, reducing the risk and spread of pathogens.

A water purification apparatus includes a water inlet; a medicine mixing device in fluid communication with the water inlet; and a water outlet interconnected to the medicine mixing device and a dental treatment center. The medicine mixing device includes a medicine storage for storing antiseptic solution, a mixing unit interconnected to the water inlet, the water outlet, and the medicine storage, and a controller interconnected to the water inlet and the medicine storage. The controller includes a sensor and a microprocessor. The controller sends the antiseptic solution from the medicine storage to the mixing unit and controls a volume of water flowing from the water inlet to the mixing unit. The microprocessor instructs the controller to control a volume of the antiseptic solution supplied from the medicine storage to the mixing unit based on a signal sensed by the sensor.

A method and system to improve asepsis during dental delivery includes a self-contained water delivery apparatus and a vacuum apparatus both of which provide disinfection of biohazards occurring during dental procedures. A UVC LED light emitting unit, with sanitary connections, may be releasably connected to the delivery and vacuum apparatus for improved maintenance and cleaning. A reservoir egress connector provides releasable engagement, fluid agitation, and unrestricted UV light transmission to improve water quality, reduce biofilm water contamination, reduce cross contamination, and reduce the potential spread of pathogens. The mounting system for the UVC LED light unit allows the apparatus to be used to decontaminate portable dental delivery units and vacuum units upon closure. A reflective interior of the cases improves irradiation of the enclosed system, reducing the risk and spread of pathogens.

A disinfection device with a pressure vessel which has an interior space for receiving a medium, and with at least one radiating device which is arranged such that it emits radiation into the interior space of the pressure vessel, wherein one or several surfaces of the interior space of the pressure vessel are formed at least partially as a reflection surface for the radiation. A particularly reliable sterilization of medical or dental compressed air in the pressure vessel is made possible. One or several disinfection devices according to the invention can be provided in a compressor system for providing compressed air for dental applications, in a dental treatment device with a compressed air device and/or in a connection device with one or several tube sections for guiding compressed air for dental applications.

A disinfection device suitable for disinfection of water in a water line, wherein the device is adapted to receive water from the water line and for the disinfected water to exit the device. The disclosure also relates to a DUWL including the disinfection device, as well as a dental chair comprising the DUWL. Moreover, embodiments of the disclosure concern a method for disinfection of water in a water line.

An aqueous solution for intraoral cleaning via irradiation with ultraviolet ray and/or near-ultraviolet visible ray and/or ray in an 800-900 nm near-infrared region is employed as the hydrogen peroxide aqueous solution, wherein a concentration of hydrogen peroxide is 1 w/v % to 7 w/v %, and a concentration of a hydrogen peroxide stabilizer is 81 ppm (mg/L) or less in the aqueous solution.

An aqueous solution for intraoral cleaning via irradiation with ultraviolet ray and/or near-ultraviolet visible ray and/or ray in an 800-900 nm near-infrared region is employed as the hydrogen peroxide aqueous solution, wherein a concentration of hydrogen peroxide is 1 w/v % to 7 w/v %, and a concentration of a hydrogen peroxide stabilizer is 81 ppm (mg/L) or less in the aqueous solution.

A formation of a biofilm is suppressed in piping having a relatively small liquid flow rate. A liquid processing nozzle connected to a liquid piping between a handpiece and a water supply source piping includes a nozzle body in which a liquid inlet, a liquid outlet, and a liquid flow path communicating the liquid inlet and the liquid outlet are formed, and a plurality of protrusions protruding from an inner surface of the liquid flow path into the liquid flow path. The protrusions are arranged so that protrusion amounts from the inner surface of the liquid flow path into the liquid flow path gradually increase as they go from an upstream side to a downstream side of the liquid flow path in a liquid flow direction from the liquid inlet to the liquid outlet.