| 摘要 |
The teeth cleaning system (1) comprises a liquid supply line (5), via which liquid is guidable to an operating element, a fluid source (3), a purging device (7) connectable to the fluid source for receiving a teeth cleaning mixture and for irrigation of constituents of the teeth cleaning mixture using the liquid supplied by the fluid source and for mixing of washed up components and liquid, and a stationary nozzle (15) present in fluid communication with the purging device for dispensing the teeth cleaning mixture and liquid. The purging device is located in or on the operating element. The teeth cleaning system (1) comprises a liquid supply line (5), via which liquid is guidable to an operating element, a fluid source (3), a purging device (7) connectable to the fluid source for receiving a teeth cleaning mixture and for irrigation of constituents of the teeth cleaning mixture using the liquid supplied by the fluid source and for mixing of washed up components and liquid, and a stationary nozzle (15) present in fluid communication with the purging device for dispensing the teeth cleaning mixture and liquid. The purging device is located in or on the operating element. The teeth cleaning system comprises the fluid source, or is connected to a separate fluid source. The teeth cleaning mixture is present in the form of a multilayer tablet, and includes a composition comprising a layer of abrasive particles comprising magnesium oxide, crosslinked polyvinylpyrrolidone (PVP) and binders. A ratio of the particles in the tablet layers is different, where the magnesium oxide (MgO) content of an outer layer gradually decreases to an inner core layer and the PVP content of an inner nuclear layer gradually decreases to the outer layer. The composition of a core layer comprises 40% of MgO and 50% of PVP. The composition of the outer layer comprises 60% of MgO and 30% of PVP. An intermediate layer is formed between the core layer and the outer layer. The composition of the intermediate layer comprises 50% of MgO and 40% of PVP. The composition of each layer comprises 1% of fumed silica for enhanced sliding properties of hydrophobic constituents. The stationary nozzle comprises a pressure chamber, a twisting unit that is arranged in an inner side of the pressure chamber, a nozzle outlet opening, and a compression region arranged between the pressure chamber and the nozzle outlet opening and extending toward the nozzle outlet opening. Independent claims are included for: (1) a teeth cleaning mixture in the form of a multilayer tablet; (2) a receiving structure for the tooth cleaning mixture; (3) a purging device; and (4) a teeth cleaning nozzle. |
