US3873327A
Expired / Lapsed
US
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Dental cement and filling material
Assignee: Individual
•
Filing: 1974-02-28
•
Granted: 1975-03-25
•
Expires: 1994-02-28
Abstract
Abstract A composition useful in the preparation of dental cements and dental fillings containing zinc oxide and calcium fluro phosphate e.g., fluroapatite. A binder can be added to the zinc oxide and fluroapatite or derative thereof to produce a dental cement.
Inventors
- 👤 Edward John Duff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/60; A61K6/69; A61K6/80; A61K6/831; A61K6/838
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
28 words
A DENTAL CEMENT AND FILLING POWDER COMPRISING ZINC OXIDE, A FLUORINE-CONTAINING COM DIDISSOCIATES TO YIELD FLUORIDE IONS AND A CALCIUM ORTHOPHOSP4PHATE MATERIAL SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
28 words
A DENTAL CEMENT AND FILLING POWDER COMPRISING ZINC OXIDE, A FLUORINE-CONTAINING COM DIDISSOCIATES TO YIELD FLUORIDE IONS AND A CALCIUM ORTHOPHOSP4PHATE MATERIAL SELECTED FROM THE GROUP CONSISTING OF:
Claim 3
Dependent Claim
4 words
ANALYTICALLY PURE FLUORAPATITE (FA):
Claim 4
Dependent Claim
4 words
ANALYTICALLY PURE FLUORAPATITE (FA):
Claim 5
Dependent Claim
7 words
FA HAVING THE CRYSTAL MORPHOLOGY OF BRUSHITE,
Claim 6
Dependent Claim
7 words
FA HAVING THE CRYSTAL MORPHOLOGY OF BRUSHITE,
Claim 7
Dependent Claim
7 words
FA having the crystal morphology of Brushite;
Claim 8
Dependent Claim
7 words
FA having the crystal morphology of Brushite;
Claim 9
Dependent Claim
46 words
The dental cement and filling powder claimed in claim 1 comprising about 5 - 89.5 percent by weight of said zinc oxide about 0.5 - 20 percent by weight of said fluoride-containing compound and about 10 - 75 percent by weight of said calcium phosphate material.
Claim 10
Dependent Claim
7 words
FA having the crystal morphology of Monetite;
Claim 11
Dependent Claim
7 words
FA having the crystal morphology of Monetite;
Claim 12
Dependent Claim
7 words
FA HAVING THE CRYSTAL MORPHOLOGY OF MOETHITE;
Claim 13
Dependent Claim
7 words
FA HAVING THE CRYSTAL MORPHOLOGY OF MOETHITE;
Claim 14
Dependent Claim
28 words
The dental cement and filling powder claimed in claim 2 wherein said fluorine-containing material is selected from the group consisting of sodium monofluorophosphate, sodium fluoride and mixture thereof.
Claim 15
Dependent Claim
11 words
HYDROXYAPATITE (HA) HAVING MONOFLUOROPHOSPHATE IONS INCORPORATED IN THE CRYSTAL LATTICE THEREOF;
Claim 16
Dependent Claim
11 words
HYDROXYAPATITE (HA) HAVING MONOFLUOROPHOSPHATE IONS INCORPORATED IN THE CRYSTAL LATTICE THEREOF;
Claim 17
Dependent Claim
11 words
Hydroxyapatite (HA) having monofluorophosphate ions incorporated in the crystal lattice thereof;
Claim 18
Dependent Claim
11 words
Hydroxyapatite (HA) having monofluorophosphate ions incorporated in the crystal lattice thereof;
Claim 19
Dependent Claim
12 words
HA having carbonate or bicarbonate ions incorporated in the crystal lattice thereof;
Claim 20
Dependent Claim
12 words
HA having carbonate or bicarbonate ions incorporated in the crystal lattice thereof;
Claim 21
Dependent Claim
12 words
HA HAVING CARBONATE OR BICARBONATE IONS INCORPORATED IN THE CRYSTAL LATTICE THEREOF;
Claim 22
Dependent Claim
12 words
HA HAVING CARBONATE OR BICARBONATE IONS INCORPORATED IN THE CRYSTAL LATTICE THEREOF;
Claim 23
Dependent Claim
16 words
HA HAVING A COMPLEX FLUORO ANION OF A TRANSISTION METAL INCORPORATED IN THE CRYSTAL LATTICE THEREOF;
Claim 24
Dependent Claim
16 words
HA HAVING A COMPLEX FLUORO ANION OF A TRANSISTION METAL INCORPORATED IN THE CRYSTAL LATTICE THEREOF;
Claim 25
Dependent Claim
16 words
HA having a complex fluoro anion of a transition metal incorporated in the crystal lattice thereof;
Claim 26
Dependent Claim
16 words
HA having a complex fluoro anion of a transition metal incorporated in the crystal lattice thereof;
Claim 27
Dependent Claim
2 words
Fluorohydroxyapatite (FHA);
Claim 28
Dependent Claim
2 words
Fluorohydroxyapatite (FHA);
Claim 29
Dependent Claim
2 words
FLUOROHYDROXYAPATITE (FHA);
Claim 30
Dependent Claim
2 words
FLUOROHYDROXYAPATITE (FHA);
Claim 31
Dependent Claim
29 words
FA WHEREIN A PORTION OF THE CALCIUM ION THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH META CATION AND TRANSITION METAL CAION;
Claim 32
Dependent Claim
29 words
FA WHEREIN A PORTION OF THE CALCIUM ION THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH META CATION AND TRANSITION METAL CAION;
Claim 33
Dependent Claim
29 words
FA wherein a portion of the calcium ion thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation;
Claim 34
Dependent Claim
29 words
FA wherein a portion of the calcium ion thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation;
Claim 35
Dependent Claim
30 words
FHA wherein a portion of the calcium ion content thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation;
Claim 36
Dependent Claim
30 words
FHA wherein a portion of the calcium ion content thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation;
Claim 37
Dependent Claim
30 words
FHA WHEREIN A PORTION OF THE CALCIUM ION CONTENT THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL CATION AND TRANSITION METAL CATION;
Claim 38
Dependent Claim
30 words
FHA WHEREIN A PORTION OF THE CALCIUM ION CONTENT THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL CATION AND TRANSITION METAL CATION;
Claim 39
Dependent Claim
30 words
HA WHEREIN A PORTION OF THE CALCIUM ION CONTENT THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL CATION AND TRANSITION METAL CATION
Claim 40
Dependent Claim
30 words
HA WHEREIN A PORTION OF THE CALCIUM ION CONTENT THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL CATION AND TRANSITION METAL CATION
Claim 41
Dependent Claim
30 words
HA wherein a portion of the calcium ion content thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation
Claim 42
Dependent Claim
30 words
HA wherein a portion of the calcium ion content thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation
Claim 43
Dependent Claim
29 words
DCPD WHEREIN A PORTION OF THE CALCIUM ION CONTENT THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE METAL CATION AND TRANSITION METAL CATION;
Claim 44
Dependent Claim
29 words
DCPD WHEREIN A PORTION OF THE CALCIUM ION CONTENT THEREOF IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE METAL CATION AND TRANSITION METAL CATION;
Claim 45
Dependent Claim
30 words
DCPD wherein a portion of the calcium ion content thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation;
Claim 46
Dependent Claim
30 words
DCPD wherein a portion of the calcium ion content thereof is replaced by another divalent cation selected from the group consisting of alkaline earth metal cation and transition metal cation;
Claim 47
Dependent Claim
28 words
ADCP wherein a portion of the calcium ion content is replaced by another divalent cation selected from the group consisting of alkaline earth metal and transition metal cation.
Claim 48
Dependent Claim
28 words
ADCP wherein a portion of the calcium ion content is replaced by another divalent cation selected from the group consisting of alkaline earth metal and transition metal cation.
Claim 49
Dependent Claim
28 words
ADCP WHEREIN A PORTION OF THE CALCIUM ION CONTENT IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL AND TRANSITION METAL CATION.
Claim 50
Dependent Claim
28 words
ADCP WHEREIN A PORTION OF THE CALCIUM ION CONTENT IS REPLACED BY ANOTHER DIVALENT CATION SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL AND TRANSITION METAL CATION.
References Cited (Backward Citations)
US2413159A
Cited
US3510322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |