US Patent 7802987 Methods and systems for lubricating dental appliances

A system for repositioning teeth comprises a plurality of individual appliances that are treated with a lubricious composition. The appliances are configured to be placed successively on the patient's teeth and to incrementally reposition the teeth from an initial tooth arrangement, through a plurality of intermediate tooth arrangements, and to a final tooth arrangement. The system of appliances is usually configured at the outset of treatment so that the patient may progress through treatment without the need to have the treating professional perform each successive step in the procedure.