Back to results
US 5,851,551 AGranted
Sustained-release matrices for dental application
AssigneeThe Gillette Company
InventorsMingchih M. Tseng, Carl M. Philbrook
Life of this patent
Estimating the term…
Abstract
A sustained-release matrix for dental application includes either an anti-microbial agent or a colorant that is released from the matrix when the matrix contacts water. The preferred matrices include a water-soluble polymer and a water-insoluble support resin.
Claims6
A method of releasing an anti-microbial agent into a mouth of an animal, comprising
- providing a matrix including between 50% and 90% by weight of a water-insoluble resin comprising ethylene vinyl acetate, between 5% and 40% by weight polyethylene oxide, and an anti-microbial agent;
- inserting said matrix into a mouth of an animal;
- and
- causing said water-soluble polymer to dissolve out of said matrix, releasing said anti-microbial agent into the mouth.
1 more element
Dependencies are inferred from the claim text.