Silica abrasive-free dentifrice composition
View Patent ↗A dentifrice composition providing superior shine and polish, low RDA and effective whitening comprising a calcined aluminum oxide polishing agent, a water soluble condensed phosphate such as an alkali metal phosphate salt and an orally acceptable carrier or excipient is described. The composition is free of a silica abrasive.
1. A dentifrice composition comprising from 0.1% to 3.0% by weight of a calcined aluminium oxide polishing agent having a primary crystal size of <1 micron and comprising from 50% to 90% by weight of α-aluminium oxide and 10.0% to 50% by weight of γ-aluminium oxide, a sodium tripolyphosphate salt and an orally acceptable carrier or excipient; the composition being free of a silica abrasive.
2. The composition according to claim 1 wherein the sodium tripolyphosphate salt is present at a level from 1.0% to 20.0% by weight of the total composition.
3. The composition according to claim 1 additionally comprising one or more surfactants.
4. The composition according to claim 1 comprising a source of fluoride ions.
5. The composition according to claim 4 wherein the fluoride ion source is sodium fluoride.
6. The composition according to claim 1 comprising an anti-plaque agent.
7. The composition according to claim 1 comprising an oral anti-malodour agent.
8. A composition according to claim 1 wherein the pH of the dentifrice composition is between 7.0-10.0.
9. A process for preparing a composition according to claim 1 comprising admixing the polishing agent, salt, and carrier or excipient, optionally under a vacuum, until a homogenous mixture is obtained, and adjusting the pH.