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Delivery system for a tooth whitener using a strip of material having low flexural stiffness

  • US 5,879,691 A
  • Filed: 06/06/1997
  • Issued: 03/09/1999
  • Est. Priority Date: 06/06/1997
  • Status: Expired due to Term
First Claim
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1. A delivery system for a tooth whitening substance, wherein the delivery system is substantially transparent and is almost unnoticeable when worn, comprising:

  • a. a strip of material having a flexural stiffness less than about 50 grams/centimeter as measured on a Handle-O-Meter per ASTM test method D2923-95, said strip of material being readily conformable without permanent deformation to a shape of a tooth when said delivery system is places thereagainst; and

    b. a tooth whitening substance applied to said strip of material such that when said delivery system is placed on a front surface of said tooth, said substance contacts said surface providing an active onto said surface, said substance also providing adhesive attachment between said strip of material and said surface to hold said delivery system in place for a sufficient time to allow said active to act upon said surface.

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