In the case of a dental hand instrument having a grip sleeve and also a head housing arranged at the front end of the grip sleeve for receiving or holding a treatment instrument, the head housing has a substantially cylindrical hollow space which is connected by way of at least one connecting bore to a connection region pointing to the grip sleeve, wherein the connecting bore is coupled, at its end facing the grip sleeve, to a media line extending through the grip sleeve, and wherein the inner wall region of the head housing enclosing the hollow space has a recess into which the connecting bore opens.

claim with this invention, [01] Provide a more efficient process to flush the water lines, [02] Water lines can all be flushed at the same time more effectively, [03] Provide drastic increase of pressure from flushing without my device, [04] Cuts down on bio-film growth, [05] Bio-film growth is one of the major problems in the dental equipment industry, [06] My device since it is connected to the suction will help evacuate growing bio-film cultures, [07] Increases the water pressure while flushing the water lines, [08] Provides dental offices with a tool to clear out clogs in their tubings cutting down on money spent for service calls.

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 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.

Described is a combination method, including a device and system for disinfecting and decontaminating water lines, for example, dental water lines, in the absence of a primary chemical component.

Methods comprised to clean and/or lubricate fluid encompassing systems and systems' components comprising of a sequence of procedural steps. These systems' and components are susceptible to buildup of contamination and remnants from a chemical agent in this system, which can cause equipment failure if not properly maintained by using an effective method comprised to clean and/or lubricate this system.

This method ensures a chemical agent's physical and chemical and properties are not altered when applied to this system. This method directs a flow of a chemical agent onto the surfaces of this system's components.

After this system is cleaned and/or lubricated using this invention's method, this method's final step removes a chemical agent and/or contamination from this system to prevent consumer(s) from ingesting this chemical agent and/or contamination. This method also ensures no residue and no remnants from a chemical agent and/or contamination remains in this system, which helps prevent equipment failure, corrosion, and buildup within said system.

This method helps maintain and/or improve the functionality of this system, which helps prolong the life span of this system and said system's components.

A composition delivery source (200) is provided that includes (a) a chamber (202), which is shaped so as to define (A) one or more liquid ports (310) in fluid communication with an interior of the chamber (202), and (B) one or more solid-liquid composition ports (312) in fluid communication with the interior of the chamber (202); (b) a solid-liquid composition delivery tube (314) in fluid communication with at least one of the one or more solid-liquid composition ports (312); (c) a mixing tube (316) in fluid communication with at least one of the one or more liquid ports (310) and at least one of the one or more solid-liquid composition ports (312); and (d) a liquid-supply tube (318) in fluid communication with at least one of the one or more liquid ports (310). A pump unit (201) includes one or more pumps (223), which are arranged to cause flow in the mixing tube (316) during a mixing activation state (342), and to cause flow in the liquid-supply tube (318) during a particle-delivery activation state (344).

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.

Systems and methods that integrate fluid-based powder conveyance for cleaning articles, including lumens and medical devices are presented. For example, a method of cleaning an article comprises a step of flowing a first fluid comprising a cleaning agent to a chamber. Flowing the first fluid comprising the cleaning agent to the chamber creates a pressure differential across a filter fluidly coupled to the chamber. When a pressure differential reaches a threshold, indicating that the cleaning agent has been accurately metered, flow of the first fluid comprising the cleaning agent is stopped. Next, flowing a second fluid through the chamber conveys the cleaning agent to an article, e.g., through a lumen of a medical or culinary device, thereby cleaning the article.

Method for treating a service water supply unit of a dental treatment unit, wherein the method has the following sequence of treatment steps: cleaning the service water supply unit using a cleaning agent, preferably a cleaning liquid or a cleaning foam; disinfecting the service water supply unit using a disinfecting agent, preferably a disinfecting liquid.