US4418053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental prophylaxis compositions and their use
Assignee: Indiana University Research and Technology Corp
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Filing: 1982-02-04
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Granted: 1983-11-29
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Expires: 2002-02-04
Abstract
Abstract The application discloses new dental prophylactic cleaning and polishing agents predominantly comprising magnesium metasilicate particles obtained by thermally treating selected minerals.
Inventors
- 👤 Joseph C. Muhler
- 👤 Mark S. Putt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:38
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61Q; A61Q11/00; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
92 words
A dental prophylaxis preparation comprising, as its principle cleaning and polishing constituent, particles of a calcined mineral selected from the group consisting of smectite, sepiolite, and chlorite minerals, substantially none of the calcined particles being retained on an 80 mesh screen, essentially all of the calcined particles passing through a 100 mesh screen, with the median particle size lying in the range of about 10-40 microns, the calcined particles being predominantly of the magnesium metasilicate form and having a lamellar crystal structure comprising superimposed layers of two-dimensional silica tetrahedra and two-dimensional octahedra.
Claim 2
Dependent Claim
92 words
A dental prophylaxis preparation comprising, as its principle cleaning and polishing constituent, particles of a calcined mineral selected from the group consisting of smectite, sepiolite, and chlorite minerals, substantially none of the calcined particles being retained on an 80 mesh screen, essentially all of the calcined particles passing through a 100 mesh screen, with the median particle size lying in the range of about 10-40 microns, the calcined particles being predominantly of the magnesium metasilicate form and having a lamellar crystal structure comprising superimposed layers of two-dimensional silica tetrahedra and two-dimensional octahedra.
Claim 3
Dependent Claim
26 words
A preparation, as claimed in claim 1, wherein the particles are calcined at a temperature in the range from about 800° C. to about 1200° C.
Claim 4
Dependent Claim
29 words
A preparation, as claimed in claim 1, and further containing a water-soluble, non-toxic anticariogenic adjuvant selected from the group consisting of water-soluble fluoride-containing salts and water-soluble aluminum ion-containing salts.
Claim 5
Dependent Claim
25 words
A preparation, as claimed in claim 1, wherein the calcined mineral particles are present at a level of about 30-95% by weight of the preparation.
Claim 6
Independent Claim
104 words
A method of cleaning and polishing the teeth comprising the application thereto of a dental prophylaxis preparation comprising, as its principal cleaning and polishing constituent, particles of a calcined mineral selected from the group consisting of smectite, sepiolite, and chlorite minerals, substantially none of the calcined particles being retained on an 80 mesh screen, essentially of the calcined particles passing through a 100 mesh screen, with the median particle size lying in the range of about 10-40 microns, the calcined particles being predominantly of the magnesium metasilicate form and having a lamellar crystal structure comprising layers of superimposed two-dimensional silica tetrahedra and two-dimensional octahedra.
Claim 7
Independent Claim
104 words
A method of cleaning and polishing the teeth comprising the application thereto of a dental prophylaxis preparation comprising, as its principal cleaning and polishing constituent, particles of a calcined mineral selected from the group consisting of smectite, sepiolite, and chlorite minerals, substantially none of the calcined particles being retained on an 80 mesh screen, essentially of the calcined particles passing through a 100 mesh screen, with the median particle size lying in the range of about 10-40 microns, the calcined particles being predominantly of the magnesium metasilicate form and having a lamellar crystal structure comprising layers of superimposed two-dimensional silica tetrahedra and two-dimensional octahedra.
Claim 8
Dependent Claim
26 words
A method as claimed in claim 5, wherein the particles are calcined at a temperature in the range from about 800° C. to about 1200° C.
Claim 9
Dependent Claim
29 words
A method, as claimed in claim 5, and further containing a water-soluble, non-toxic anticariogenic adjuvant selected from the group consisting of water-soluble fluoride-containing salts and water-soluble aluminum ion-containing salts.
Claim 10
Dependent Claim
25 words
A method, as claimed in claim 5, wherein the calcined mineral particles are present at a level of about 30-95% by weight of the preparation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |