Methods and compositions for hydrophobic modification of oral cavity surfaces

Abstract

Oral care compositions containing agents that are effective for treating and modifying teeth and mucosal surfaces to be hydrophobic are disclosed. Hydrophobic modification of teeth and other oral cavity surfaces imparts a variety of end use benefits including prevention of caries, erosion, wear, staining, sensitivity and desquamation as well as providing shine, smoothness and positive tooth feel benefits. The compositions contain selected surface active organophosphate compounds that deposit and adhere to teeth and other oral cavity surfaces forming a hydrophobic coating having prolonged retention thereon. By forming a "hydrophobic coating" on the oral cavity surface is meant that the hydrophobic character of the surface is increased as measured, for example, by an increase of at least about 10 degrees in the water contact angle of the surface after treatment. The increased hydrophobic character of the surface is maintained for a period of at least about 5 minutes and desirably longer such as at least about 10, at least about 20 or at least about 30 minutes. The compositions may contain additional hydrophobic materials to further increase hydrophobicity of the surface and / or functionality of the coating to provide surface protection and many other benefits.

Description

technical field [0001] Compositions comprising selected surface-active organophosphate compounds and the use of these compositions for treating and modifying teeth and other oral surfaces are provided. When applied to oral surfaces, the compositions of the present invention form a substantially hydrophobic coating of one or more surface-active organophosphate compounds on the treated surface. Organophosphate compounds are deposited on tooth and mucosal surfaces via linkages or bonds formed between the phosphate groups of the compounds and cationic sites on the target surface. The treated surface has increased hydrophobicity, which in turn imparts a variety of end-use benefits to the surface, including ease of cleaning; enhanced retention of actives, such as fluoride, on teeth; and surface protection benefits, especially improved tooth resistance. Bacterial or biofilm adhesion, aggressive demineralization or dissolution, resistance to sensitivity and staining, and protection f...

AI Technical Summary

Problems solved by technology

While oral hygiene products are generally useful for cleaning and protecting the oral cavity from these factors, the short-term exposure of the active substance and its rapid clearance from the oral cavity minimizes the longer-term efficacy of the active substance contained in the oral hygiene product

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