Jeffrey Allen Wagner
Land Surveyors in Salt Lake City, UT
License number
Utah 5340188-E202
Issued Date
Oct 20, 2003
Expiration Date
Oct 20, 2004
Category
Engineer/Land Surveyor
Type
Engineer Exam - Obsolete
Address
Address
Salt Lake City, UT
Professional information
Water And Sodium Hypochlorite Indicating Endodontic Monitoring Devices
US Patent:
8215960, Jul 10, 2012
Filed:
Sep 19, 2006
Appl. No.:
11/533187
Inventors:
Jeffrey A. Wagner - Salt Lake City UT, US
Dan E. Fischer - Sandy UT, US
Dan E. Fischer - Sandy UT, US
Assignee:
Ultradent Products, Inc. - South Jordan UT
International Classification:
A61C 5/02
US Classification:
433224
Abstract:
Water and aqueous sodium hypochlorite indicating endodontic monitoring devices include a cone-shaped water absorptive material and color changing system applied thereto that selectively changes to different colors when exposed to either water or aqueous sodium hypochlorite within a root canal chamber. The devices include a pH changing material, pH indicator, and pH insensitive dye. The dye imparts an initial color when the device is dry. The pH changing material and pH indicator react with water to yield a second color. In the presence of aqueous sodium hypochlorite, the device changes to a third color different from the initial color and second color as a result of bleaching the dye and/or pH indicator. Color changing devices are manufactured by applying an aqueous solution that includes a pH changing material and dye to a water absorptive cone, drying the cone, applying an anhydrous pH indicator solution, and then drying the cone again.