Abstract: A method (100) for generating an instantly-formed artificial saliva gel or an ultrasound gel, comprising: (i) providing (110) a first composition comprising a pH-sensitive polymer, wherein the first composition is maintained at an acidic pH; (ii) providing (110) a second composition comprising a pH agent configured to maintain the second composition at an alkaline pH; and (iii) combining (120) the first composition and the second composition to generate a single instantly-formed gel, wherein the pH of the single instantly-formed gel is at a level required to increase viscosity of the pH-sensitive polymer to a level suitable for an artificial saliva gel or an ultrasound gel; wherein either the first composition or second composition comprises a solvent, and wherein the acidic pH of the first composition and the alkaline pH of the second composition are configured such that the pH of the single instantly-formed gel is between approximately 6.5 and 7.5.

Abstract: A surface cleaning means is proposed based on the combined use of ultrasound and radiofrequency electromagnetic emissions, propagated onto a surface to be cleaned, to provide synergistic cleaning action. One aspect provides a cleaning unit which comprises a body which includes an ultrasound transducer arrangement and an RF emitter arrangement, and wherein the two are arranged such that, when driven by respective drive signals, ultrasonic and RF emissions (for providing a cleaning action) are generated which overlap in a common spatial region, to thereby provide combined cleaning action in the common spatial region. One example application is for use for oral cleaning.

Abstract: Provided is a multi-component system, and a method for preparing a hypochlorite composition with increased viscosity with a composition pH in the range of 7 to 12. For example, and preferably, the system and method may be used to provide a (hydro)gelled hypochlorite composition. The system or method makes use of a first quantity of a first component including hypochlorite or a source of hypochlorite at a pH in the range of 10 to 13.5 preferably 11 to 13.5 and a separate component including a pH induced thickening agent in “dry” form or in dissolved and/or dispersed form at a pH less than 7. The pH induced thickener is capable of increasing the viscosity of a composition upon subjecting it to an increasing pH such as in particular the composition pH in the range of 7 to 12. The pH induced thickener is thus for causing an increase of viscosity in the hypochlorite composition caused by the alkaline composition pH experienced by the pH induced thickener.

Abstract: Provided is a kit or system (100) for preparing a peroxide composition with increased viscosity with a pH in the range of 7 to 12 in an almost instantaneous method. For example, the kit or system may be used to provide an almost instantly obtainable (hydro)gelled peroxide composition. The system comprises a first aqueous composition (102) comprising a peroxide agent. The first aqueous composition has a first pH of less than 7. The system further comprises a second composition (104) comprising a basic agent. The second composition is separate from the first aqueous composition. A pH induced thickener is included in the kit or system separate from the second composition. The peroxide composition is obtainable by combining the parts of the kit or system. The pH induced thickener is capable of increasing the viscosity of the peroxide composition upon subjecting it to the pH in the range of 7 to 12. The kit or system has sufficient basic agent for the peroxide composition to cause the pH in the range of 7 to 12.