Patent US5502087A successfully refreshed from Google Patents.
US5502087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental composition, prosthesis, and method for making dental prosthesis
Assignee: Dentsply Research and Development Corp
•
Filing: 1994-05-16
•
Granted: 1996-03-26
•
Expires: 2014-05-16
Abstract
Abstract A dental prosthesis includes polymeric material formed by heat curing a polymerizable composition having at least 5 percent by weight of at least one polymerizable Monomer having at least one acrylic moiety and a gram molecular weight of at least 200. The polymeric material is preferably formed by heat curing and has an unnotched Izod impact strength of at least 2.5 and more preferably at least 3.0 ft.lb/in as measured by a Modified ASTM D256, and a flexural fatigue life of at least 20,000 flexes to failure at 0.1 inch deflection. Preferably the polymerizable monomer has a vapor pressure less than 5 mm Hg at 23° C. A method of making a denture is provided which includes molding and polymerizing the polymerizable composition to form a denture. Preferably the polymerizable composition includes polymerizable compounds made up of at least 5 percent by weight of the acrylic Monomer having a gram molecular weight of at least 300 and less than 5 percent by weight of Volatile compounds and less than 2 percent by weight of Low Molecular Weight acrylic compounds having a gram molecular weight of less than 200.
Inventors
- 👤 Louis H. Tateosian
- 👤 Scott E. Shaffer
- 👤 Mark A. Latta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:45
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61L27/18; A61C; A61C13/00; A61C13/20; C; C08; C08F; C08F279/00; C08F279/02; C08F279/06; A61L2430/00; A61L2430/12; Y; Y10; Y10S; Y10S522/00; Y10S522/908
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
123 words
A dental prosthesis comprising polymeric material formed by heat curing a one-component polymerizable composition for from about 0.25 hour to about 24 hour at from about 115° F. to about 240° F. in a chamber of a dental prosthesis mold having an inner wall with a dental prosthesis shape, said composition comprising less than 10 percent by weight of polymerizable acrylic compounds having a gram molecular weight of less than 200, and at least one polymerizable acrylic compound having a gram molecular weight of at least 1,000, said polymeric material having at least about 20,000 flexes to failure using the Flexural Fatigue of Denture Bases Test and an unnotched Izod impact strength of at least 2.5 ft.lb/in as measured by Modified ASTM D256.
Claim 2
Dependent Claim
123 words
A dental prosthesis comprising polymeric material formed by heat curing a one-component polymerizable composition for from about 0.25 hour to about 24 hour at from about 115° F. to about 240° F. in a chamber of a dental prosthesis mold having an inner wall with a dental prosthesis shape, said composition comprising less than 10 percent by weight of polymerizable acrylic compounds having a gram molecular weight of less than 200, and at least one polymerizable acrylic compound having a gram molecular weight of at least 1,000, said polymeric material having at least about 20,000 flexes to failure using the Flexural Fatigue of Denture Bases Test and an unnotched Izod impact strength of at least 2.5 ft.lb/in as measured by Modified ASTM D256.
Claim 3
Dependent Claim
65 words
The dental prosthesis of claim 1 wherein said acrylic compound has at least two acrylic moieties and comprises at least about 5 percent by weight of said polymerizable compounds, and said polymeric material has at least 50,000 flexes to failure using the Flexural Fatigue of Denture Bases Test and an unnotched Izod impact strength of at least 3.0 ft.lb/in as measured by Modified ASTM D256.
Claim 4
Dependent Claim
78 words
The dental prosthesis of claim 1 wherein said composition further comprises polymeric particles, said polymeric particles being swollen with said polymerizable acrylic compound during said heat curing, and wherein said polymerizable compounds further comprise less then 30 percent by weight of Volatile compounds having a gram molecular weight of less than 400 and said polymerizable composition further comprises at least 1 percent by weight of polymer particles, said polymer particles, said polymer particles comprise rubber or rubber modifier.
Claim 5
Dependent Claim
30 words
The dental prosthesis of claim 1 wherein said polymerizable compounds comprise less than 5 percent by weight of polymerizable acrylic compounds having a gram molecular weight of less than 200.
Claim 6
Dependent Claim
46 words
The dental prosthesis of claim 2 wherein said acrylic Monomer comprises at least 10 percent by weight of said polymerizable compounds and said polymerizable composition is heat cured for from about 0.5 hour to about 15 hours at from about 140° F. to about 220° F.
Claim 7
Dependent Claim
20 words
The dental prosthesis of claim 2 wherein said polymerizable compounds comprise less than 20 percent by weight of Volatile compounds.
Claim 8
Dependent Claim
32 words
The dental prosthesis of claim 2 wherein said polymerizable compounds comprise less than one percent by weight of Low Molecular Weight polymerizable acrylic compounds having a gram molecular weight less than 150.
Claim 9
Dependent Claim
21 words
The dental prosthesis of claim 1 wherein said acrylic Monomer comprises at least 20 percent by weight of said polymerizable composition.
Claim 10
Dependent Claim
32 words
The dental prosthesis of claim 1 wherein said polymerizable compounds further comprise less then 10 percent by weight of Volatile compounds and said polymeric material has at least 50,000 flexes to failure.
Claim 11
Dependent Claim
31 words
The dental prosthesis of claim 1 wherein said polymerizable compound comprise less than 0.5 percent by weight of Low Molecular Weight polymerizable compounds having a gram molecular weight less than 130.
Claim 12
Dependent Claim
20 words
The dental prosthesis of claim 1 wherein said prosthesis is a denture base, artificial tooth, filling, crown, bridge or inlay.
Claim 13
Dependent Claim
20 words
The dental prosthesis of claim 8 wherein said prosthesis is a denture base artificial tooth, filling, crown, bridge or inlay.
Claim 14
Dependent Claim
29 words
The dental prosthesis of claim 1 wherein said composition further comprises polymeric filler particles, and said impact strength is at least 3.5 ft.lb/in as determined by Modified ASTM D256.
Claim 15
Dependent Claim
30 words
The dental prosthesis of claim 1 wherein said polymeric material has a flexural fatigue life of at least 1,000,000 flexes to failure determined by Flexural Fatigue of Denture Bases Test.
Claim 16
Dependent Claim
19 words
The dental prosthesis of claim 1 wherein said molecular weight of said acrylic Monomer is at least 5,000 g/mol.
Claim 17
Dependent Claim
29 words
The dental prosthesis of claim 1 wherein said polymerizable comprises a polymer particles which are swellable by said monomer at about 23° C. and about 760 mm of Hg.
Claim 18
Dependent Claim
124 words
A denture base, comprising a polymeric material formed by heat curing a one-component polymerizable composition in a chamber of a mold having an inner wall with a surface which forms the shape of said dental prosthesis, said heat curing being for from about 0.25 hours to about 24 hours at from about 115° F. to about 240° F., said polymerizable composition comprising at least one polymerizable acrylic Monomer having at least two acrylate moieties, and a gram molecular weight of at least about 1,000, said polymeric material having an unnotched Izod impact strength of at least 3.0 ft.lb/in as measured by Modified ASTM D256, a flexural fatigue life of at least 50,000 flexes to failure measured by the Flexural Fatigue of Denture Bases Test.
Claim 19
Dependent Claim
124 words
A denture base, comprising a polymeric material formed by heat curing a one-component polymerizable composition in a chamber of a mold having an inner wall with a surface which forms the shape of said dental prosthesis, said heat curing being for from about 0.25 hours to about 24 hours at from about 115° F. to about 240° F., said polymerizable composition comprising at least one polymerizable acrylic Monomer having at least two acrylate moieties, and a gram molecular weight of at least about 1,000, said polymeric material having an unnotched Izod impact strength of at least 3.0 ft.lb/in as measured by Modified ASTM D256, a flexural fatigue life of at least 50,000 flexes to failure measured by the Flexural Fatigue of Denture Bases Test.
Claim 20
Dependent Claim
31 words
The denture base of claim 17 wherein said polymerizable composition further comprises particles of polymer, said polymer being swellable by said monomer at about 23° C. and about 760 mm Hg.
Claim 21
Dependent Claim
19 words
The denture base of claim 17 wherein said molecular weight of said acrylic Monomer is at least 5,000 g/mol.
Claim 22
Dependent Claim
21 words
The denture base of claim 17 wherein said acrylic Monomer comprises at least 20 percent by weight of said polymerizable composition.
Claim 23
Dependent Claim
21 words
The denture base of claim 17 wherein said acrylic polymerizable composition comprises less than 10 percent by weight of Volatile compounds.
Claim 24
Dependent Claim
40 words
A denture comprising: a denture base and at least one artificial tooth, said denture base comprising a polymeric material having a flexural fatigue life of at least 200,000 flexes to failure determined by the Flexural Fatigue of Denture Bases Test.
Claim 25
Dependent Claim
40 words
A denture comprising: a denture base and at least one artificial tooth, said denture base comprising a polymeric material having a flexural fatigue life of at least 200,000 flexes to failure determined by the Flexural Fatigue of Denture Bases Test.
Claim 26
Dependent Claim
29 words
The denture of claim 22 wherein said polymeric material has a flexural fatigue of at least 300,000 flexes of failure determined by the Flexural Fatigue of Denture Bases Test.
Claim 27
Independent Claim
113 words
A method of making a denture, comprising compression molding while heat curing a one-component polymerizable composition for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. while enclosed by a mold chamber wall having a denture shape to form a denture, said polymerizable composition having a polymerizable monomer with a molecular weight greater than about 1,000, a free radical generating catalyst, said acrylic Monomer being adapted to form a polymeric material having an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256, and at least 50,000 flexes to failure measured by the Flexural Fatigue of Denture Bases Test.
Claim 28
Independent Claim
113 words
A method of making a denture, comprising compression molding while heat curing a one-component polymerizable composition for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. while enclosed by a mold chamber wall having a denture shape to form a denture, said polymerizable composition having a polymerizable monomer with a molecular weight greater than about 1,000, a free radical generating catalyst, said acrylic Monomer being adapted to form a polymeric material having an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256, and at least 50,000 flexes to failure measured by the Flexural Fatigue of Denture Bases Test.
Claim 29
Dependent Claim
29 words
The method of claim 24 wherein said polymeric material has a flexural fatigue of at least 100,000 flexes to failure determined by the Flexural Fatigue of Denture Bases Test.
Claim 30
Independent Claim
119 words
A method of making a denture base, comprising: heat curing a polymerizable composition having a polymerizable acrylic Monomer having a gram molecular weight of at least about 1,000 for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. in a chamber of a dental prosthesis mold with an inner wall having a denture base shape, said acrylic Monomer being adapted to form a polymeric material having an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256, and at least 50,000 flexes to failure by the Flexural Fatigue of Denture Bases Test, compression molding and heat curing said polymerizable composition to form a denture base.
Claim 31
Independent Claim
119 words
A method of making a denture base, comprising: heat curing a polymerizable composition having a polymerizable acrylic Monomer having a gram molecular weight of at least about 1,000 for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. in a chamber of a dental prosthesis mold with an inner wall having a denture base shape, said acrylic Monomer being adapted to form a polymeric material having an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256, and at least 50,000 flexes to failure by the Flexural Fatigue of Denture Bases Test, compression molding and heat curing said polymerizable composition to form a denture base.
Claim 32
Independent Claim
125 words
A method of making a one component denture base, comprising: heat curing a polymerizable composition having at least 5 percent by weight a polymerizable acrylic Monomer having a gram molecular weight greater than about 1,000 for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. in a chamber of a dental prosthesis mold with an inner wall having a denture base shape, said acrylic Monomer being adapted to form a polymeric material having an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256, and at least 50,000 flexes to failure by the Flexural Fatigue of Denture Bases Test, molding and heat curing said polymerizable composition to form a denture base.
Claim 33
Independent Claim
125 words
A method of making a one component denture base, comprising: heat curing a polymerizable composition having at least 5 percent by weight a polymerizable acrylic Monomer having a gram molecular weight greater than about 1,000 for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. in a chamber of a dental prosthesis mold with an inner wall having a denture base shape, said acrylic Monomer being adapted to form a polymeric material having an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256, and at least 50,000 flexes to failure by the Flexural Fatigue of Denture Bases Test, molding and heat curing said polymerizable composition to form a denture base.
Claim 34
Dependent Claim
93 words
A shelf stable one-component heat curable polymerizable dental paste composition comprising: at least 5 percent by weight of a polymerizable acrylic compound having a gram molecular weight of at least about 1,000, at least 10 percent by weight of polymeric particles and a catalyst, said composition being adapted to form a polymeric material having a flexural fatigue life of at least about 20,000 flexes to failure determined by Flexural Fatigue of Denture Bases Test, said composition comprising less than 10 percent by weight of monomers having a gram molecular weight less than 200.
Claim 35
Dependent Claim
93 words
A shelf stable one-component heat curable polymerizable dental paste composition comprising: at least 5 percent by weight of a polymerizable acrylic compound having a gram molecular weight of at least about 1,000, at least 10 percent by weight of polymeric particles and a catalyst, said composition being adapted to form a polymeric material having a flexural fatigue life of at least about 20,000 flexes to failure determined by Flexural Fatigue of Denture Bases Test, said composition comprising less than 10 percent by weight of monomers having a gram molecular weight less than 200.
Claim 36
Dependent Claim
121 words
The composition of claim 28 wherein said composition comprising less than 5 percent by weight of Low Molecular Weight Monomer, said acrylic Monomer has a gram molecular weight of at least 400, said catalyst being adapted to generate free radicals during said heating curing, and said uncrosslinked polymeric particles are swollen or partially dissolved by said acrylic Monomer during heat curing for from about 0.25 hour to about 24 hours at from about 115° F. to about 240° F. and said polymeric material has an unnotched Izod impact strength of at least about 3.0 ft.lb/in as measured by Modified ASTM D256 and a flexural fatigue life of at least 100,000 flexes to failure determined by Flexural Fatigue of Denture Bases Test.
Claim 37
Dependent Claim
47 words
The dental composition of claim 28 wherein said polymeric material has a flexural fatigue life of at least 100,000 flexes to failure determine by Flexural Fatigue of Denture Bases Test and an unnotched Izod impact strength of at least 2.5 ft.lb/in as measured by Modified ASTM D256.
Claim 38
Dependent Claim
60 words
The dental composition of claim 28 wherein said polymeric material has a flexural fatigue life of at least 150,000 flexes to failure determine by Flexural Fatigue of Denture Bases Test and said composition percent by weight of said acrylic Monomer further comprising of at least 20 and has a vapor pressure of less than 10 mm Hg at 23° C.
Claim 39
Dependent Claim
34 words
The dental composition of claim 28 wherein said composition further comprises benzoyl peroxide, tert butyl perisononanoate or benzopinacole, and said composition has a vapor pressure of less than 5 mm Hg at 23° C.
Claim 40
Dependent Claim
12 words
The dental composition of claim 28 wherein said composition further comprises pigment.
Claim 41
Dependent Claim
15 words
The dental composition of claim 28 wherein said composition is light reddish pink in color.
Claim 42
Dependent Claim
15 words
The dental composition of claim 28 wherein said particles are swollen by said acrylic Monomer.
Claim 43
Dependent Claim
16 words
The dental composition of claim 28 wherein said particles are partially dissolved by said acrylic Monomer.
Claim 44
Dependent Claim
35 words
The dental composition of claim 28 wherein said composition has a mass of at least 200 g, and said polymerizable acrylic compound is effectively maintained without polymerization for at least six months at 23° C.
Claim 45
Dependent Claim
28 words
The dental composition of claim 28 wherein said polymeric material has an unnotched Izod impact strength of at least 4.0 ft lbs/in as measured by Modified ASTM D256.
Claim 46
Dependent Claim
44 words
The dental composition of claim 38 wherein said acrylic Monomer comprises at least about 10 percent by weight of said polymerizable compounds and said polymeric material is adapted to withstand at least 1,000,000 flexes to break in the Flexural Fatigue of Denture Bases Test.
Claim 47
Dependent Claim
42 words
The dental composition of claim 38 wherein polymeric material is polymerized by heat curing and said polymerizable compounds further comprise less than 30 percent by weight of Volatile and said polymerizable compounds comprise at least 1 percent by weight of said composition.
Claim 48
Dependent Claim
59 words
The dental prosthesis of claim 1 wherein said polymerizable acrylic compound is within the scope of general formula: ##STR4## wherein each R 1 independently, is hydrogen, halogen, alkyl, or cyano moiety, each R 2 independently is alkylene, cycloalkylene, or arylene, each R 3 independently is alkylene, cycloalkylene, arylene, or heterocyclic, and R 4 is a polyester or polyether moiety.
Claim 49
Dependent Claim
59 words
The composition of claim 28 wherein said compound is within the scope of the general formula ##STR5## wherein each R 1 independently, is hydrogen, halogen, alkyl, substituted alkyl or cyano moiety, each R 2 independently is alkylene, cycloalkylene, or arylene, each R 3 independently is alkylene, cycloalkylene, arylene, or heterocyclic, and R 4 is a polyester or polyether moiety.
Claim 50
Dependent Claim
21 words
The dental prosthesis of claim 1 wherein said impact strength is at least 3.0 ft.lb/in as measured by Modified ASTM D256.
Claim 51
Dependent Claim
72 words
The dental prosthesis of claim 1 wherein said polymerizable acrylic compound has at least two acrylic moieties and is within the scope of the general formula: ##STR6## wherein R is an acrylic-free organic moiety which is at least 60 grams per molecule, R 1 is hydrogen, halogen, alkyl or cyano radical, R 2 and R 3 each independently is hydrogen or a halogen and n is an integer from 2 to 6.
Claim 52
Dependent Claim
65 words
The denture base of claim 17 wherein said polymerizable acrylic compound is within the scope of the general formula: ##STR7## wherein R is an acrylic-free organic moiety which is at least 60 grams per molecule, R 1 is hydrogen, halogen, alkyl or cyano radical, R 2 and R 3 each independently is hydrogen or a halogen and n is an integer from 2 to 6.
Claim 53
Dependent Claim
64 words
The method of claim 24 wherein said polymerizable acrylic compound is within the scope of the general formula: ##STR8## wherein R is an acrylic-free organic moiety which is at least 60 grams per molecule, R 1 is hydrogen, halogen, alkyl or cyano radical, R 2 and R 3 each independently is hydrogen or a halogen and n is an integer from 2 to 6.
References Cited (Backward Citations)
US283487A
Cited
US68548A
Cited
US1575688A
Cited
US2341991A
Cited
US2660758A
Cited
US3435012A
Cited
US3470615A
Cited
DE1516455A1
Cited
US3471596A
Cited
US3427274A
Cited
US3661876A
Cited
US3647498A
Cited
US3635630A
Cited
US4129611A
Cited
US3889385A
Cited
US3808687A
Cited
US3899382A
Cited
US3969433A
Cited
US4092303A
Cited
US4081492A
Cited
US4097994A
Cited
US4431787A
Cited
US4104333A
Cited
US4069000A
Cited
CA1102039A
Cited
US4115922A
Cited
US4182507A
Cited
US4155890A
Cited
CA1145880A
Cited
US4267133A
Cited
US4359435A
Cited
US4218205A
Cited
US4689015A
Cited
CA1148294A
Cited
US4396476A
Cited
US4229431A
Cited
CA1149538A
Cited
US4454258A
Cited
US4394465A
Cited
US4330283A
Cited
US4396377A
Cited
US4331580A
Cited
CA1209298A
Cited
CA1189996A
Cited
US4427809A
Cited
EP0059525B1
Cited
US4698373A
Cited
US4396477A
Cited
US4433077A
Cited
US4431421A
Cited
US4602076A
Cited
EP0089705B1
Cited
US4650550A
Cited
CA1244177A
Cited
US4674980A
Cited
US4426504A
Cited
CA1200046A
Cited
CA1244581A
Cited
US4563153A
Cited
US4551388A
Cited
US4609351A
Cited
US4533325A
Cited
US4705476A
Cited
US4551098A
Cited
CA1243796A
Cited
US4863977A
Cited
EP0427300A1
Cited
US5210109A
Cited
US4711913A
Cited
US4551486A
Cited
US4599216A
Cited
CA1245437A
Cited
CA1259149A
Cited
US4540723A
Cited
US4567239A
Cited
US4544711A
Cited
US4543395A
Cited
CA1262791A
Cited
US4656213A
Cited
US4816495A
Cited
US4657941A
Cited
EP0193514B1
Cited
US4587330A
Cited
US4636540A
Cited
US4745138A
Cited
US4722947A
Cited
US4618703A
Cited
US4688801A
Cited
US4806381A
Cited
US4872936A
Cited
US4842936A
Cited
US4874675A
Cited
US4722976A
Cited
GB2189793B
Cited
US4873269A
Cited
DE3725502C2
Cited
US4704303A
Cited
US4771112A
Cited
US4994520A
Cited
US4880857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-26 | 1999-09-25 | 2000-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-26 | 2003-09-25 | 2004-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-26 | 2007-09-25 | 2008-03-26 | $7700.00 | Window Closed / Lapsed |