US4648843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dental treatment using poly(ethylenically unsaturated) carbamoyl isocyanurates and dental materials made therewith
Assignee: 3M Co
•
Filing: 1985-07-19
•
Granted: 1987-03-10
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Expires: 2005-07-19
Abstract
Abstract A method for dental treatment using polymerizable carbamoyl isocyanurates in filled or unfilled dental materials such as restoratives, prostheses and sealants, dental materials containing such polymerizable carbamoyl isocyanurates disposed adjacent to teeth, and teeth treated with such dental materials.
Inventors
- 👤 Sumita B. Mitra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:47
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/891; A61K6/893; A61K6/20; A61K6/887
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
31 words
A method of dental treatment which comprises placing in temporary or permanent bonded or touching contact with a tooth a dental material comprising a polymerized or unpolymerized poly(ethylenically unsaturated) carbamoyl isocyanurate.
Claim 2
Independent Claim
31 words
A method of dental treatment which comprises placing in temporary or permanent bonded or touching contact with a tooth a dental material comprising a polymerized or unpolymerized poly(ethylenically unsaturated) carbamoyl isocyanurate.
Claim 3
Dependent Claim
23 words
A method according to claim 1 wherein said dental material is a restorative or sealant which is polymerized after it contacts said tooth.
Claim 4
Dependent Claim
23 words
A method according to claim 1 wherein said dental material is a prosthesis which is shaped and polymerized before it contacts said tooth.
Claim 5
Dependent Claim
35 words
A method according to claim 1 wherein said dental material further comprises diluent monomer in admixture with said isocyanurate, said admixture having a refractive index which enables the approximation of the appearance of natural dentition.
Claim 6
Dependent Claim
64 words
A method according to claim 1 wherein said isocyanurate is an isocyanuric acid ring joined at at least one of its nitrogen atoms, by at least one radical containing a carbamoyl linkage, to at least one ethylenically unsaturated group, with at least one other ethylenically unsaturated group being joined to the same or another said radical, or to another nitrogen atom of said ring.
Claim 7
Dependent Claim
60 words
A method according to claim 1 wherein said isocyanurate has the formula ##STR21## wherein each X independently is O, S, or NH, each Y independently is a non-interfering polyvalent organic linking group, and each R independently is an organic group with the proviso that at least two polymerizable ethylenically unsaturated groups are present within the R groups as a whole.
Claim 8
Dependent Claim
46 words
A method according to claim 6 wherein X is O, each Y independently is selected from the group consisting of alkylene, oxyalkylene, cycloalkylene, arylene or aralkylene groups, and each R independently is selected from the group consisting of alkylmono- or alkylpoly(acrylates and methacrylates), and mixtures thereof.
Claim 9
Dependent Claim
60 words
A method according to claim 1 wherein said isocyanurate is the reaction product of (a) a triisocyanato isocyanurate, and (b) an isocyanate-reactive compound containing at least one polymerizable ethylenically unsaturated group of the formula ##STR22## wherein Z is hydrogen, halogen or alkyl with the proviso that at least two of said ethylenically unsaturated groups are present within said reaction product.
Claim 10
Dependent Claim
16 words
A method according to claim 1 wherein said dental material further comprises filler and diluent monomer.
Claim 11
Dependent Claim
30 words
A method according to claim 9 wherein said filler is organic or inorganic filler or a combination thereof present at more than about 40% by weight of said dental material.
Claim 12
Dependent Claim
43 words
A method according to claim 9 wherein said filler is selected from the group consisting of quartz, submicron silica and non-vitreous microparticles, and said diluent monomer is selected from the group consisting of triethyleneglycol dimethacrylate and ethoxylated bisphenol A dimethacrylate and mixtures thereof.
Claim 13
Dependent Claim
32 words
A method according to claim 1 wherein said dental material comprises a mixture of: (a) poly(ethylenically unsaturated carbamoyl isocyanurate of the formula ##STR23## (b) filler, (c) diluent monomer, and (d) polymerization initiator.
Claim 14
Dependent Claim
29 words
A dental material comprising a mixture of poly(ethylenically unsaturated) carbamoyl isocyanurate and filler, said dental material being placed in temporary or permanent bonded or touching contact with a tooth.
Claim 15
Dependent Claim
29 words
A dental material comprising a mixture of poly(ethylenically unsaturated) carbamoyl isocyanurate and filler, said dental material being placed in temporary or permanent bonded or touching contact with a tooth.
Claim 16
Dependent Claim
24 words
A dental material according to claim 13, wherein said dental material is a restorative or sealant which is cured after it contacts said tooth.
Claim 17
Dependent Claim
25 words
A dental material according to claim 13 wherein said dental material is a prosthetic device which is shaped and cured before it contacts said tooth.
Claim 18
Dependent Claim
18 words
A tooth having in temporary or permanent bonded contact therewith a dental material comprising poly(ethylenically unsaturated) carbamoyl isocyanurate.
Claim 19
Dependent Claim
18 words
A tooth having in temporary or permanent bonded contact therewith a dental material comprising poly(ethylenically unsaturated) carbamoyl isocyanurate.
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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) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |