US4895516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermediate ceramic bonding layer for bonding of a resin to an alloy structure or substructure
Assignee: Individual
•
Filing: 1987-10-14
•
Granted: 1990-01-23
•
Expires: 2007-10-14
Abstract
Abstract The invention is a method of manufacturing a dental restoration from a polymerizable resin or composite resin with an alloy structure, or a method of manufacturing an alloy substructure-reinforced dental restoration. An alloy structure or substructure is first coated with a liquid, vitrifiable ceramic layer. To ensure against crazing in the ceramic layer upon vitrification, the ceramic and alloy have generally similar coefficients of thermal expansion. After vitrification, the ceramic becomes a ceramic bonding layer. Micropores are then formed on that layer, as by sandblasting or by etching with a suitable etching acid. A silane coupling agent is then applied to the micropore-containing ceramic bonding layer. Finally, the silane coupling agent is overlain with a polymerizable resin or composite resin material, and the resin or composite resin is polymerized.
Inventors
- 👤 Johan O. Hulten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:32
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/70; A61C5/77; A61C13/00; A61C13/0003; A61C5/73
Claims Analysis
Total Claims: 69
Claim 1
Independent Claim
117 words
A method of manufacturing a polymerizable resin or composite resin, alloy substructure reinforced dental restoration, comprising: (a) coating a crown and bridge alloy substructure with a vitrifiable ceramic, said alloy and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure, thereby forming a generally thin ceramic bonding layer on said substructure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid to obtain a microporous ceramic bonding layer; (d) applying a silane coupling agent to said microporous ceramic bonding layer; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing said resin or composite resin material.
Claim 2
Independent Claim
117 words
A method of manufacturing a polymerizable resin or composite resin, alloy substructure reinforced dental restoration, comprising: (a) coating a crown and bridge alloy substructure with a vitrifiable ceramic, said alloy and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure, thereby forming a generally thin ceramic bonding layer on said substructure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid to obtain a microporous ceramic bonding layer; (d) applying a silane coupling agent to said microporous ceramic bonding layer; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing said resin or composite resin material.
Claim 3
Dependent Claim
15 words
The method as set forth in claim 1, wherein said ceramic comprises a feldspathic porcelain.
Claim 4
Dependent Claim
28 words
The method as set forth in claim 2, wherein said silane coupling agent comprises a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane.
Claim 5
Dependent Claim
21 words
The method as set forth in claim 2, wherein a single coating of said ceramic is applied to said alloy substructure.
Claim 6
Dependent Claim
20 words
The method as set forth in claim 4, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 7
Dependent Claim
20 words
The method as set forth in claim 1, wherein said ceramic is applied to said substructure as a particulate suspension.
Claim 8
Dependent Claim
26 words
The method as set forth in claim 3, wherein said microporous surface is formed with an etching acid which comprises a 10% solution of hydrofluoric acid.
Claim 9
Dependent Claim
20 words
The method as set forth in claim 1, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 10
Dependent Claim
20 words
The method as set forth in claim 1, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 11
Independent Claim
149 words
A method of manufacturing a resin or composite resin alloy reinforced dental restoration, comprising: (a) applying a thin coating of a particulate suspension of a vitrifiable, feldspathic ceramic to a high noble, noble or predominantly base alloy substructure, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure to thereby form a generally thin ceramic bonding layer on said substructure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 12
Independent Claim
149 words
A method of manufacturing a resin or composite resin alloy reinforced dental restoration, comprising: (a) applying a thin coating of a particulate suspension of a vitrifiable, feldspathic ceramic to a high noble, noble or predominantly base alloy substructure, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure to thereby form a generally thin ceramic bonding layer on said substructure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 13
Dependent Claim
100 words
A dental restoration made by a method comprising: (a) coating a crown and bridge alloy substructure with a vitrifiable ceramic, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure, thereby forming a generally thin ceramic bonding layer on said substructure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; (f) polymerizing said resin or composite resin material.
Claim 14
Dependent Claim
100 words
A dental restoration made by a method comprising: (a) coating a crown and bridge alloy substructure with a vitrifiable ceramic, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure, thereby forming a generally thin ceramic bonding layer on said substructure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; (f) polymerizing said resin or composite resin material.
Claim 15
Dependent Claim
16 words
The dental restoration as set forth in claim 11, wherein said ceramic comprises a feldspathic porcelain.
Claim 16
Dependent Claim
29 words
The dental restoration as set forth in claim 12, wherein said silane coupling agent comprises a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane.
Claim 17
Dependent Claim
22 words
The dental restoration as set forth in claim 12, wherein a single coating of said ceramic is applied to said alloy substructure.
Claim 18
Dependent Claim
26 words
The dental restoration as set forth in claim 13, wherein said microporous surface is formed by an etching acid comprising a 10% solution of hydrofluoric acid.
Claim 19
Dependent Claim
21 words
The dental restoration as set forth in claim 13, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 20
Dependent Claim
21 words
The dental restoration as set forth in claim 11, wherein said ceramic is applied to said substructure as a particulate suspension.
Claim 21
Dependent Claim
21 words
The dental restoration as set forth in claim 11, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 22
Dependent Claim
140 words
A dental restoration made by a method comprising: (a) applying a particulate suspension of a thin coating of a vitrifiable, feldspathic ceramic to a crown and bridge alloy substructure, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure to thereby form a generally thin ceramic bonding layer on said substructure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resins or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 23
Dependent Claim
140 words
A dental restoration made by a method comprising: (a) applying a particulate suspension of a thin coating of a vitrifiable, feldspathic ceramic to a crown and bridge alloy substructure, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure to thereby form a generally thin ceramic bonding layer on said substructure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resins or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 24
Dependent Claim
135 words
In a method of bonding a composite resin dental restoration to an alloy substructure, the method including the steps of applying a silane coupling agent to a generally thin ceramic bonding layer having micropores, overlaying the resulting silane coupling agent-treated, microporous surface with a polymerizable resin or composite resin material, and polymerizing said polymerizable resin or composite resin veneering material, the improvement comprising the steps of: (a) applying a thin coating of a particulate suspension of a vitrifiable ceramic to a crown and bridge alloy substructure, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure to thereby form said generally thin ceramic bonding layer on said substructure; and (c) forming said micropores on said ceramic bonding layer with an etching said.
Claim 25
Dependent Claim
135 words
In a method of bonding a composite resin dental restoration to an alloy substructure, the method including the steps of applying a silane coupling agent to a generally thin ceramic bonding layer having micropores, overlaying the resulting silane coupling agent-treated, microporous surface with a polymerizable resin or composite resin material, and polymerizing said polymerizable resin or composite resin veneering material, the improvement comprising the steps of: (a) applying a thin coating of a particulate suspension of a vitrifiable ceramic to a crown and bridge alloy substructure, said alloy and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure to thereby form said generally thin ceramic bonding layer on said substructure; and (c) forming said micropores on said ceramic bonding layer with an etching said.
Claim 26
Dependent Claim
20 words
The method as set forth in claim 20, wherein said ceramic is applied to said substructure as a particulate suspension.
Claim 27
Dependent Claim
15 words
The method as set forth in claim 20, wherein said ceramic comprises a feldspathic porcelain.
Claim 28
Dependent Claim
15 words
The method as set forth in claim 21, wherein said ceramic comprises a feldspathic porcelain.
Claim 29
Dependent Claim
23 words
The method as set forth in claim 20, wherein said micropores are formed by acid etching with a 10% solution of hydrofluoric acid.
Claim 30
Dependent Claim
23 words
The method as set forth in claim 22, wherein said micropores are formed by acid etching with a 10% solution of hydrofluoric acid.
Claim 31
Independent Claim
124 words
A method of manufacturing a polymerizable resin or composite resin alloy substructure-reinforced dental restoration, comprising: (a) coating a crown and bridge alloy substructure with a vitrifiable ceramic, said alloy and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure, thereby forming a generally thin ceramic bonding layer on said substructure; (c) forming a microporous surface upon said ceramic bonding layer with etching acid, said bonding layer being of a thickness adequate to permit bonding after formation of a microporous surface thereon; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable acrylic or composite resin material; and (f) polymerizing said acrylic or composite resin material.
Claim 32
Independent Claim
124 words
A method of manufacturing a polymerizable resin or composite resin alloy substructure-reinforced dental restoration, comprising: (a) coating a crown and bridge alloy substructure with a vitrifiable ceramic, said alloy and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said substructure, thereby forming a generally thin ceramic bonding layer on said substructure; (c) forming a microporous surface upon said ceramic bonding layer with etching acid, said bonding layer being of a thickness adequate to permit bonding after formation of a microporous surface thereon; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable acrylic or composite resin material; and (f) polymerizing said acrylic or composite resin material.
Claim 33
Dependent Claim
24 words
The method as set forth in claim 26, wherein said ceramic bonding layer has an initial thickness of from 25 microns to 500 microns.
Claim 34
Dependent Claim
23 words
The method as set forth in claim 26, wherein said ceramic bonding layer has an initial thickness of from 175 to 250 microns.
Claim 35
Dependent Claim
23 words
The method as set forth in claim 26, wherein said ceramic bonding layer has an initial thickness of from 75 to 100 microns.
Claim 36
Independent Claim
122 words
A method of manufacturing a dental restoration from a polymerizable resin or composite resin and an alloy structure, comprising: (a) coating said alloy structure with a vitrifiable ceramic, the alloy of said alloy structure and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said alloy structure, thereby forming a generally thin ceramic bonding layer on said structure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid to obtain a microporous ceramic bonding layer; (d) applying a silane coupling agent to said microporous ceramic bonding layer; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing said resin or composite resin material.
Claim 37
Independent Claim
122 words
A method of manufacturing a dental restoration from a polymerizable resin or composite resin and an alloy structure, comprising: (a) coating said alloy structure with a vitrifiable ceramic, the alloy of said alloy structure and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said alloy structure, thereby forming a generally thin ceramic bonding layer on said structure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid to obtain a microporous ceramic bonding layer; (d) applying a silane coupling agent to said microporous ceramic bonding layer; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing said resin or composite resin material.
Claim 38
Dependent Claim
15 words
The method as set forth in claim 30, wherein said ceramic comprises a feldspathic porcelain.
Claim 39
Dependent Claim
28 words
The method as set forth in claim 31, wherein said silane coupling agent comprises a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane.
Claim 40
Dependent Claim
21 words
The method as set forth in claim 31, wherein a single coating of said ceramic is applied to said alloy structure.
Claim 41
Dependent Claim
26 words
The method as set forth in claim 32, wherein said microporous surface is formed with an etching acid which comprises a 10% solution of hydrofluoric acid.
Claim 42
Dependent Claim
20 words
The method as set forth in claim 32, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 43
Dependent Claim
20 words
The method as set forth in claim 30, wherein said ceramic is applied to said structure as a particulate suspension.
Claim 44
Independent Claim
151 words
A method of manufacturing a resin or composite resin-alloy dental restoration, comprising: (a) applying a thin coating of a particulate suspension of a vitrifiable, feldspathic ceramic to a high noble, noble or predominantly base alloy structure, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure to thereby form a generally thin ceramic bonding layer on said structure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 45
Independent Claim
151 words
A method of manufacturing a resin or composite resin-alloy dental restoration, comprising: (a) applying a thin coating of a particulate suspension of a vitrifiable, feldspathic ceramic to a high noble, noble or predominantly base alloy structure, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure to thereby form a generally thin ceramic bonding layer on said structure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 46
Dependent Claim
102 words
A dental restoration made by a method comprising: (a) coating an alloy structure with a vitrifiable ceramic, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure, thereby forming a generally thin ceramic bonding layer on said structure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing said resin or composite resin material.
Claim 47
Dependent Claim
102 words
A dental restoration made by a method comprising: (a) coating an alloy structure with a vitrifiable ceramic, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure, thereby forming a generally thin ceramic bonding layer on said structure; (c) forming a microporous surface on said ceramic bonding layer with an etching acid; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing said resin or composite resin material.
Claim 48
Dependent Claim
21 words
The dental restoration as set forth in claim 38, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 49
Dependent Claim
16 words
The dental restoration as set forth in claim 39, wherein said ceramic comprises a feldspathic porcelain.
Claim 50
Dependent Claim
29 words
The dental restoration as set forth in claim 40, wherein said silane coupling agent comprises a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane.
Claim 51
Dependent Claim
22 words
The dental restoration as set forth in claim 40, wherein a single coating of said ceramic is applied to said alloy structure.
Claim 52
Dependent Claim
26 words
The dental restoration as set forth in claim 40, wherein said microporous surface is formed by an etching acid comprising a 10% solution of hydrofluoric acid.
Claim 53
Dependent Claim
21 words
The dental restoration as set forth in claim 41, wherein said polymerizable resin or composite resin material is polymerized by light.
Claim 54
Dependent Claim
21 words
The dental restoration as set forth in claim 38, wherein said ceramic is applied to said structure as a particulate suspension.
Claim 55
Dependent Claim
141 words
A dental restoration made by a method comprising: (a) applying a particulate suspension of a thin coating of a vitrifiable, feldspathic ceramic to an alloy structure, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure to thereby form a generally thin ceramic bonding layer on said structure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 56
Dependent Claim
141 words
A dental restoration made by a method comprising: (a) applying a particulate suspension of a thin coating of a vitrifiable, feldspathic ceramic to an alloy structure, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure to thereby form a generally thin ceramic bonding layer on said structure; (c) acid etching said ceramic bonding layer with a 10% solution of hydrofluoric acid to form a microporous surface on said ceramic bonding layer; (d) applying a silane coupling agent to said microporous surface, said agent comprising a cyclohexane solution of 2% (vol.) n-propyl amine and 2% (vol.) gamma methacryloxypropyl trimethoxysilane; (e) overlaying said silane coupling agent with a polymerizable resin or composite resin material; and (f) polymerizing by light said resin or composite resin material.
Claim 57
Dependent Claim
133 words
In a method of bonding a composite resin to an alloy structure, the method including the steps of applying a silane coupling agent to a generally thin ceramic bonding layer having micropores, overlaying the resulting silane coupling agent-treated, microporous surface with a polymerizable resin or composite resin material, and polymerizing said polymerizable resin or composite resin material, the improvement comprising the steps of: (a) applying a thin coating of a particulate suspension of a vitrifiable ceramic to an alloy structure, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure to thereby form said generally thin ceramic bonding layer on said structure; and (c) forming said micropores on said ceramic bonding layer with an etching acid.
Claim 58
Dependent Claim
133 words
In a method of bonding a composite resin to an alloy structure, the method including the steps of applying a silane coupling agent to a generally thin ceramic bonding layer having micropores, overlaying the resulting silane coupling agent-treated, microporous surface with a polymerizable resin or composite resin material, and polymerizing said polymerizable resin or composite resin material, the improvement comprising the steps of: (a) applying a thin coating of a particulate suspension of a vitrifiable ceramic to an alloy structure, the alloy of said alloy structure and said ceramic having generally similar coefficients of thermal expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure to thereby form said generally thin ceramic bonding layer on said structure; and (c) forming said micropores on said ceramic bonding layer with an etching acid.
Claim 59
Dependent Claim
20 words
The method as set forth in claim 47, wherein said ceramic is applied to said structure as a particulate suspension.
Claim 60
Dependent Claim
15 words
The method as set forth in claim 48, wherein said ceramic comprises a feldspathic porcelain.
Claim 61
Dependent Claim
23 words
The method as set forth in claim 49, wherein said micropores are formed by acid etching with a 10% solution of hydrofluoric acid.
Claim 62
Dependent Claim
15 words
The method as set forth in claim 47, wherein said ceramic comprises a feldspathic porcelain.
Claim 63
Dependent Claim
16 words
The method as set forth in claim 47, wherein said micropores are formed by acid etching.
Claim 64
Dependent Claim
23 words
The method as set forth in claim 47, wherein said micropores are formed by acid etching with a 10% solution of hydrofluoric acid.
Claim 65
Independent Claim
130 words
A method of manufacturing a dental restoration from a polymerizable resin or composite resin and an alloy structure, comprising: (a) coating an alloy structure with a vitrifiable ceramic, the alloy of said alloy structure and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure, thereby forming a generally thin ceramic bonding layer on said structure; (c) forming a microporous surface upon said ceramic bonding layer with an etching acid, said bonding layer being of a thickness adequate to permit bonding after formation of a microporous surface thereon; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable acrylic or composite resin material; and (f) polymerizing said acrylic or composite resin material.
Claim 66
Independent Claim
130 words
A method of manufacturing a dental restoration from a polymerizable resin or composite resin and an alloy structure, comprising: (a) coating an alloy structure with a vitrifiable ceramic, the alloy of said alloy structure and said ceramic having generally similar coefficients of expansion; (b) vitrifying said ceramic to fuse said ceramic to said structure, thereby forming a generally thin ceramic bonding layer on said structure; (c) forming a microporous surface upon said ceramic bonding layer with an etching acid, said bonding layer being of a thickness adequate to permit bonding after formation of a microporous surface thereon; (d) applying a silane coupling agent to said microporous surface; (e) overlaying said silane coupling agent with a polymerizable acrylic or composite resin material; and (f) polymerizing said acrylic or composite resin material.
Claim 67
Dependent Claim
24 words
The method as set forth in claim 54, wherein said ceramic bonding layer has an initial thickness of from 25 microns to 500 microns.
Claim 68
Dependent Claim
23 words
The method as set forth in claim 54, wherein said ceramic bonding layer has an initial thickness of from 175 to 250 microns.
Claim 69
Dependent Claim
23 words
The method as set forth in claim 54, wherein said ceramic bonding layer has an initial thickness of from 75 to 100 microns.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |