US5250288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for desensitizing teeth
Assignee: Gillette Canada Inc
•
Filing: 1993-01-25
•
Granted: 1993-10-05
•
Expires: 2013-01-25
Abstract
Abstract A method for desensitizing teeth includes applying an effective amount of charged polymeric particles to the surface of the tooth.
Inventors
- 👤 Samuel S. Turesky
- 👤 Jean L. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:07
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8105; A61K8/8117; A61K8/02; A61K8/0241; A61K8/30; A61K8/40; A61K8/43; A61Q; A61Q11/00; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
28 words
A method of desensitizing a hypersensitive tooth, comprising applying an effective amount of charged polymeric particles to the surface of said tooth to cause desensitization of said tooth.
Claim 2
Independent Claim
28 words
A method of desensitizing a hypersensitive tooth, comprising applying an effective amount of charged polymeric particles to the surface of said tooth to cause desensitization of said tooth.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein said particles have an average diameter of 0.01 micron to 3 microns.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein said particles have an average diameter of 0.2 micron to 0.6 micron.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein said particles have an average surface charge density of greater than 4μC/cm 2 .
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein said particles are positively charged.
Claim 7
Dependent Claim
17 words
The method of claim 1 wherein said particles are applied in the form of an aqueous dispersion.
Claim 8
Dependent Claim
19 words
The method of claim 6, further comprising polishing said surface of said tooth prior to applying said aqueous dispersion.
Claim 9
Dependent Claim
19 words
The method of claim 6, wherein said particles are applied to said surface for less than about one minute.
Claim 10
Independent Claim
41 words
A method of desensitizing a hypersensitive tooth, said tooth comprising an exposed tubule in the dentin layer of said tooth, said method comprising applying to said surface of said tooth a sufficient amount of charged polymeric particles to block said tubule.
Claim 11
Independent Claim
41 words
A method of desensitizing a hypersensitive tooth, said tooth comprising an exposed tubule in the dentin layer of said tooth, said method comprising applying to said surface of said tooth a sufficient amount of charged polymeric particles to block said tubule.
Claim 12
Dependent Claim
17 words
The method of claim 9 wherein said particles have an average diameter of less than 3 microns.
Claim 13
Dependent Claim
10 words
The method of claim 10 wherein said particles comprise microspheres.
Claim 14
Dependent Claim
10 words
The method of claim 11 wherein said microspheres comprise polystyrene.
Claim 15
Independent Claim
18 words
A method of treating a hypersensitive tooth, comprising applying charged polymeric microspheres to the surface of said tooth.
Claim 16
Independent Claim
18 words
A method of treating a hypersensitive tooth, comprising applying charged polymeric microspheres to the surface of said tooth.
Claim 17
Dependent Claim
11 words
The method of claim 13 wherein said microspheres are positively charged.
Claim 18
Dependent Claim
10 words
The method of claim 11 wherein said microspheres comprise polystyrene.
Claim 19
Dependent Claim
23 words
The method of claim 13 wherein said particles are applied by brushing the tooth with a toothbrush having bristles which include the particles.
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| 3.5 Years (Year 4) | 1996-10-04 | 1997-04-05 | 1997-10-05 | $2000.00 | Window Closed / Lapsed |
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