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Patent Searching and Data


Title:
METHOD OF "WET-FIELD" SCANNING
Document Type and Number:
WIPO Patent Application WO2003077839
Kind Code:
A3
Abstract:
A method is provided for scanning the surface of an object in which moisture such as saliva or water is present on the surface. The method includes the step of applying a saliva and water-resistant composition to the surface, wherein the composition is characterized in that it does not readily wash off the surface after application of the composition to the surface in the presence of saliva or water. The composition forms an opaque film on the surface. The method further includes the step of scanning the surface having the film with a scanner. Several formulations for the composition are disclosed. One includes a liquid alcohol base, such as dehydrated ethyl alcohol, a reflective pigment, and a binder for promoting good adhesion of the formulation to the surface of the object being scanned. A suitable binder for scanning teeth and other oral structures is a denture adhesive such as an off-the-shelf denture adhesive, in powder form, that is mixed with the pigment and the alcohol base. Other suitable compositions can be derived by persons skilled in the art from the teachings disclosed herein.

Inventors:
BUTCHER NANCY
RIEMEIER FRIEDRICH
COHEN GREGG
Application Number:
US0303825W
Publication Date:
March 18, 2004
Filing Date:
February 07, 2003
Export Citation:
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Assignee:
ORAMETRIX, INC.
International Classes:
A61C13/00; A61C9/00; (IPC1-7): A61C19/04
Domestic Patent References:
WO1998048242A11998-10-29
Foreign References:
EP0234422A11987-09-02
US5266030A1993-11-30
US5554028A1996-09-10
US5944521A1999-08-31
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