US4851046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periodontal osseous defect repair
Assignee: FLORIDA UNVERSITY OF
•
Filing: 1985-06-19
•
Granted: 1989-07-25
•
Expires: 2005-06-19
Abstract
Abstract Method and composition for repair of periodontal osseous defects based on particulate bioactive and biocompatible glass.
Inventors
- 👤 Samuel B. Low
- 👤 Alan E. Fetner
- 👤 Arthur E. Clark, Jr.
- 👤 Larry L. Hench
- 👤 June Wilson-Hench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/02; A61F; A61F2/00; A61F2/02; A61F2/28; A61L27/00; A61L27/02; A61L27/10; A61L27/12; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; A61L2430/00; A61L2430/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
63 words
A composition adapted for the repair of periodontal osseous defects consisting essentially of particulate bioactive and biocompatible glass, said particulate glass having a particle size in the range of from about 355 to about 710 μm and the following weight percentage composition: ______________________________________
Composition Weight Percentage
______________________________________
SiO.sub.2 40-52
CaO 10-50
Na.sub.2 O 10-35
P.sub.2 O.sub.5
2-8
CaF.sub.2 0-25
B.sub.2 O.sub.3
0-10
______________________________________
Claim 2
Dependent Claim
63 words
A composition adapted for the repair of periodontal osseous defects consisting essentially of particulate bioactive and biocompatible glass, said particulate glass having a particle size in the range of from about 355 to about 710 μm and the following weight percentage composition: ______________________________________
Composition Weight Percentage
______________________________________
SiO.sub.2 40-52
CaO 10-50
Na.sub.2 O 10-35
P.sub.2 O.sub.5
2-8
CaF.sub.2 0-25
B.sub.2 O.sub.3
0-10
______________________________________
Claim 3
Dependent Claim
24 words
The composition of claim 1 wherein said particulate glass has a particle size in the range of from about 355 to about 500 μm.
Claim 4
Dependent Claim
24 words
The composition of claim 1 wherein said particulate glass has a particle size in the range of from about 500 to about 710 μm.
Claim 5
Dependent Claim
67 words
The composition of claim 1 consisting essentially of a mixture of (1) said particulate glass having a particle size in the range of from about 90 to about 350 μm, (2) said particulate glass having a particle size in the range of from about 355 to 500 μm, and (3) said particulate glass having a particle size in the range of from about 500 to 710 μm.
Claim 6
Dependent Claim
22 words
The composition of claim 4 consisting essentially of equal weights by thirds of each of said particulate glasses (1), (2) and (3).
Claim 7
Dependent Claim
26 words
The composition of claim 1 additionally containing a liquid in admixture with said particulate glass in an amount sufficient to wet the particles of said glass.
Claim 8
Dependent Claim
10 words
The composition of claim 6 wherein said liquid is aqueous.
Claim 9
Dependent Claim
10 words
The method of claim 6 wherein said liquid is blood.
Claim 10
Dependent Claim
32 words
The composition of claim 7 or claim 8 wherein the amount of said aqueous liquid or blood in said mixture is from about 1/3 to about equal volume of said particulate glass.
References Cited (Backward Citations)
US3981736A
Cited
US4239113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |