Desensitizing anti-tartar dentifrice
US5240697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Oct 17, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/5424
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An oral composition, such as a toothpaste, includes an anti-tartar proportion of a polyphosphate anti-tartar agent (preferably with synthetic anionic polymeric polycarboxylate or equivalent, and fluoride) and a desensitizing proportion of a tooth pain inhibiting potassium salt which passes through exposed dentin tubules to tooth nerves or neurons, which salt can be potassium nitrate, potassium citrate or potassium oxalate, so that it helps to prevent tartar from forming on the teeth and also lessens any pain experienced by persons contacting their sensitive teeth with the oral composition. Preferably the oral composition is a desensitizing anti-tartar toothpaste or gel which, when the teeth are brushed with it, aids in removal of at least some tartar and prevents its reappearance, and at the same time diminishes any tooth pain that the brusher would otherwise experience due to such brushing. In preferred toothpastes the anti-tartar agent and the desensitizing agent are both potassium compounds and other components of the toothpaste, such as the detergent or surfactant, thickener, water soluble fluoride, anionic polymeric polycarboxylate, sweetener and any anti-calculus agent presen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.