EP0329268A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Glass ionomer dental cement curable in two stages
Assignee: Kerr Corp
•
Filing: 1989-01-06
•
Granted: —
•
Expires: 2009-01-06
Abstract
Abstract A series of dual curing dental cements are disclosed which consist of powder and liquid components to be mixed within a preferred powder to liquid range by weight. Mixing is initiated immediately prior to usage following which the mixed material is applied to the tooth surface as required and cured within a few seconds by irradiation with high intensity visible light energy to a tough leathery consistency, thus permitting the bulk placement of other dental restoratives over it without disturbance. The second stage curing, which is chemically initiated, occurs much more slowly between the powder and the liquid and results in a fully set cement which is hard and rigid. These cements are adhesive, both to prepared tooth structure and to composite dental restorative materials bulk placed over them. Thus, they combine the advantages of conventional dental glass ionomer cements with those of a first generation visible light cured cavity liner.
Inventors
- 👤 Emil Jandourek
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:15
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; A61K6/889
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
32 words
A two component dual curing dental cement which comprises: Powder Component Liquid Component Basic Fluoroalumino Silicate Glass Powder Methyacrylic Functional Polycarboxylic Acid Radiopaquing Agent Hydroxyfunctional Methacrylic Monomer Photoreducing Agent Photosensitizer Inhibitor Water
Claim 2
Dependent Claim
32 words
A two component dual curing dental cement which comprises: Powder Component Liquid Component Basic Fluoroalumino Silicate Glass Powder Methyacrylic Functional Polycarboxylic Acid Radiopaquing Agent Hydroxyfunctional Methacrylic Monomer Photoreducing Agent Photosensitizer Inhibitor Water
Claim 3
Dependent Claim
45 words
A two component dual curing dental cement which comprises: Powder Component Wt% Liquid Component Wt% Basic Fluoroalumino Silicate Glass Powder 20-60 Methacrylic Functional Polycarboxylic Acid 20-60 Radiopaquing Agent 15-50 Hydrofunctional Methacrylic Monomer 0.01-5.0 Photoreducing Agent 0.1-1.0 α Diketone Photosensitizer 0.05-1.0 Inhibitor 0.005-0.25 Deionized Water 20-60
Claim 4
Dependent Claim
45 words
A two component dual curing dental cement which comprises: Powder Component Wt% Liquid Component Wt% Basic Fluoroalumino Silicate Glass Powder 20-60 Methacrylic Functional Polycarboxylic Acid 20-60 Radiopaquing Agent 15-50 Hydrofunctional Methacrylic Monomer 0.01-5.0 Photoreducing Agent 0.1-1.0 α Diketone Photosensitizer 0.05-1.0 Inhibitor 0.005-0.25 Deionized Water 20-60
Claim 5
Dependent Claim
48 words
A two component dual curing dental cement which comprises: Liquid Component Wt% Polyacrylic Acid (MW 5000-15,000) 40.0 Water 40.0 Hydroxyethylmethacrylate 17.5 4-Methoxyphenol 0.04 Benzil 0.3 Citric Acid 2.16 Powder Component Wt% Basic Fluoroalumino Silicate Glass Powder (10 Micron and below) 55.0 Barium Sulfate 44.8 Sodium p-Toluene Sulfinate 0.2
Claim 6
Dependent Claim
48 words
A two component dual curing dental cement which comprises: Liquid Component Wt% Polyacrylic Acid (MW 5000-15,000) 40.0 Water 40.0 Hydroxyethylmethacrylate 17.5 4-Methoxyphenol 0.04 Benzil 0.3 Citric Acid 2.16 Powder Component Wt% Basic Fluoroalumino Silicate Glass Powder (10 Micron and below) 55.0 Barium Sulfate 44.8 Sodium p-Toluene Sulfinate 0.2
Claim 7
Dependent Claim
50 words
A dual curing two component dental cement which comprises: Hydrated Polyacid Liquid Component WT% Unsaturated Polyacid 30-60 Water 30-60 Hydroxy Functional Acrylic Functional Monomer 0-15 Inhibitor 0.005-0.5 Photoinitiator 0.01-1.0 Accelerator 0.05-5.0 Powder Component WT% Basic Fluoroalumino Silicate Glass Powder 40-80 Radiopaquing Agent 15-55 Reducing Agent For Free Radical Generator 0.1-1.0
Claim 8
Dependent Claim
50 words
A dual curing two component dental cement which comprises: Hydrated Polyacid Liquid Component WT% Unsaturated Polyacid 30-60 Water 30-60 Hydroxy Functional Acrylic Functional Monomer 0-15 Inhibitor 0.005-0.5 Photoinitiator 0.01-1.0 Accelerator 0.05-5.0 Powder Component WT% Basic Fluoroalumino Silicate Glass Powder 40-80 Radiopaquing Agent 15-55 Reducing Agent For Free Radical Generator 0.1-1.0
Claim 9
Dependent Claim
51 words
A dual curing two component dental cement which comprises: Anhydrous Polyacid Powder Component WT% Anhydrous Polyacid 30-60 Basic Fluoroalumino Silicate Glass Powder 30-60 Radiopaquing Agent 15-40 Solid Synergistic Reducing Agent or Free Generator 0.1-1.0 Photoinitiator 0.01-1.0 Inhibitor 0.005-0.5 Liquid Component WT% Water 80-95 Accelerator 1-10 Acrylic Functional Hydroxy Functional Monomer 1.15
Claim 10
Dependent Claim
51 words
A dual curing two component dental cement which comprises: Anhydrous Polyacid Powder Component WT% Anhydrous Polyacid 30-60 Basic Fluoroalumino Silicate Glass Powder 30-60 Radiopaquing Agent 15-40 Solid Synergistic Reducing Agent or Free Generator 0.1-1.0 Photoinitiator 0.01-1.0 Inhibitor 0.005-0.5 Liquid Component WT% Water 80-95 Accelerator 1-10 Acrylic Functional Hydroxy Functional Monomer 1.15
Claim 11
Dependent Claim
30 words
A cured dental cement which comprises a finely divided basic fluoroalumino silicate glass powder, water, a polycarboxylate functional polyacid, a photoinitiator, a free radical generator, and a photocurable polymerizable moeity.
Claim 12
Dependent Claim
30 words
A cured dental cement which comprises a finely divided basic fluoroalumino silicate glass powder, water, a polycarboxylate functional polyacid, a photoinitiator, a free radical generator, and a photocurable polymerizable moeity.
Claim 13
Dependent Claim
43 words
A cured glass ionomer dental cement which comprises: Wt% Basic Fluoroalumino Silicate Glass Powder 20-60 Unsaturated Polycarboxylic Acid 20-60 Water 20-60 Radiopaquing Agent 5-50 Reducing Agent or Free Radical Generator 0.05-1.0 Photoinitiator 0.005-1.0 Inhibitor 0.005-0.25 Accelerator 0.5-5.0 Hydroxy Functional Acrylic Functional Monomer 0-5.0
Claim 14
Dependent Claim
43 words
A cured glass ionomer dental cement which comprises: Wt% Basic Fluoroalumino Silicate Glass Powder 20-60 Unsaturated Polycarboxylic Acid 20-60 Water 20-60 Radiopaquing Agent 5-50 Reducing Agent or Free Radical Generator 0.05-1.0 Photoinitiator 0.005-1.0 Inhibitor 0.005-0.25 Accelerator 0.5-5.0 Hydroxy Functional Acrylic Functional Monomer 0-5.0
Claim 15
Dependent Claim
43 words
A cured dual curing dental cement which comprises: WT% Basic Fluoroalumino Silicate Glass 43 Unsaturated Polycarboxylic Acid 24 Water 24 Radiopaquing Agent 7.25 Reducing Agent or Free Radical Generator 0.1 Photoinitiator 0.01 Inhibitor 0.1 Accelerator 1.5 Hydroxy Functional Acrylic Functional Monomer 0.04 100.00
Claim 16
Dependent Claim
43 words
A cured dual curing dental cement which comprises: WT% Basic Fluoroalumino Silicate Glass 43 Unsaturated Polycarboxylic Acid 24 Water 24 Radiopaquing Agent 7.25 Reducing Agent or Free Radical Generator 0.1 Photoinitiator 0.01 Inhibitor 0.1 Accelerator 1.5 Hydroxy Functional Acrylic Functional Monomer 0.04 100.00
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.