Dentistry – Method or material for testing – treating – restoring – or... – Cleaning
Reexamination Certificate
2006-07-11
2006-07-11
Manahan, Todd E. (Department: 3732)
Dentistry
Method or material for testing, treating, restoring, or...
Cleaning
C424S053000, C433S215000
Reexamination Certificate
active
07074042
ABSTRACT:
Dental bleaching devices in the shape of a dental tray or tray-like form include an outer barrier layer and an inner bleaching layer. The bleaching layer comprises a substantially solid dental bleaching composition that has increased adhesiveness to teeth when moistened with saliva or water. The shape of the dental bleaching device facilitates placement of the device over a person's teeth with substantially less manipulation compared to the use of initially flat bleaching strips. The substantially solid dental bleaching composition becomes more adhesive when moistened with saliva or water, yet remains intact and coherent after the dental bleaching device is placed over a person's teeth during bleaching. The result is that the moistened dental bleaching composition is able to reliably adhere the dental bleaching device against a user's teeth during a bleaching procedure. However, because a substantial portion of the dental bleaching composition remains solid or semi-solid during bleaching, the bleaching composition maintains a substantial portion of its adhesive properties and internal cohesive strength.
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Allred Peter M.
Jessop Neil T.
Manahan Todd #E.
Ultradent Products Inc.
Workman Nydegger
LandOfFree
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