US4345900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture means and method
Assignee: Individual
•
Filing: 1975-04-30
•
Granted: 1982-08-24
•
Expires: 1995-04-30
Abstract
Abstract Disclosed are devices and methods for forming a denture in a tray either in-situ in the mouth of a dental patient or against a model of the gums. A tray which is adapted to hold false teeth and which formable is fitted or conformed to the gums of the patient, or to an impression of the gums of the patient, while employing a spacer to separate said formable tray and gums or impression of the gums, said spacer having a thickness representing approximately the thickness of the denture-forming plastic material desired in the denture. The resulting conformed tray with the spacer separated provides a former into which liquid curable denture-forming material is then placed. The resulting assembly can then be inserted into the mouth where pressure is applied and the denture-forming material cures to form the denture which is thereafter separated from the former.
Inventors
- 👤 Harry S. Katz
- 👤 Sidney Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:17
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0001; A61C13/01; A61C13/06; A61C13/10; A61C13/1003; A61C13/1013; A61C9/00
Claims Analysis
Total Claims: 87
Claim 1
Independent Claim
108 words
A tray which functions as a former for in situ forming a denture comprising a basic tray having inner and outer wall portions defining a trough of which the upper portion thereof defines at least a lower portion of a gum-receiving portion and the lower portion thereof defines an area adapted to hold false teeth, and a formable material adjacent said gum-receiving portion and secured to at least one of said wall portions whereby said formable material and wall portion to which it is secured form a tray wall moveable by said formable material from one position of rest to another position of rest adjacent said gum-receiving portion.
Claim 2
Dependent Claim
108 words
A tray which functions as a former for in situ forming a denture comprising a basic tray having inner and outer wall portions defining a trough of which the upper portion thereof defines at least a lower portion of a gum-receiving portion and the lower portion thereof defines an area adapted to hold false teeth, and a formable material adjacent said gum-receiving portion and secured to at least one of said wall portions whereby said formable material and wall portion to which it is secured form a tray wall moveable by said formable material from one position of rest to another position of rest adjacent said gum-receiving portion.
Claim 3
Dependent Claim
22 words
A tray assembly in accordance with claim 1 in which false teeth are held in said area adapted to hold false teeth.
Claim 4
Dependent Claim
40 words
A tray in accordance with claim 1 in which the inner and outer basic tray wall portions define essentially the entirety of the gum-receiving portion and in which formable material is secured to both said inner and outer wall portions.
Claim 5
Dependent Claim
25 words
A tray in accordance with claim 1 in which at least the basic tray wall portion having formable material secured thereto is a flanged wall.
Claim 6
Dependent Claim
36 words
A tray in accordance with claim 1 in which the inner and outer basic tray wall portions define a flanged channel and in which formable material is secured to both said inner and outer wall portions.
Claim 7
Dependent Claim
49 words
A tray in accordance with claim 2 which functions as a former for a lower denture in which the inner and outer basic tray wall portions define essentially the entirety of the gum-receiving portion and in which formable material is secured to both said inner and outer wall portions.
Claim 8
Dependent Claim
45 words
A tray in accordance with claim 2 which functions as a former for a lower denture in which the inner and outer basic tray wall portions define a flanged channel and in which formable material is secured to both said inner and outer wall portions.
Claim 9
Dependent Claim
98 words
A tray in accordance with claim 2 which functions as a former for an upper denture in which the inner and outer basic tray wall portions define essentially the entirety of the gum-receiving portion, in which a basic tray palate portion is integral with said inner basic tray wall portion and in which formable material is secured to at least said inner wall portion and to said palate portion whereby said palate portion as well as the resulting inner tray wall may be moved from one position of rest to another position of rest by said formable material.
Claim 10
Dependent Claim
19 words
A tray in accordance with claim 8 in which formable material is also secured to the outer wall portion.
Claim 11
Dependent Claim
91 words
A tray in accordance with claim 2 which functions as a former for an upper denture in which the inner and outer basic tray wall portions define a flanged channel, in which formable material is secured to at least said inner wall portion and in which a palate portion of formable material is integral with the formable material secured to the inner wall portion whereby said palate portion as well as at least the resulting inner tray wall may be moved from one position of rest to another position of rest.
Claim 12
Dependent Claim
19 words
A tray in accordance with claim 10 in which formable material is also secured to the outer wall portion.
Claim 13
Dependent Claim
33 words
A tray in accordance with claim 2 in which the false teeth carried in the lower portion of the trough are removably secured by an adhesive material to the basic tray wall portions.
Claim 14
Dependent Claim
26 words
A tray in accordance with claim 12 in which the basic tray includes a bottom portion integral with the inner and outer basic tray wall portions.
Claim 15
Dependent Claim
17 words
A tray in accordance with claim 2 in which the formable material is a heat deformable material.
Claim 16
Dependent Claim
37 words
A tray in accordance with claim 6 in which the basic tray includes a bottom portion integral with the inner and outer basic tray wall portions and in which the formable material is a heat deformable material.
Claim 17
Dependent Claim
84 words
A tray in accordance with claim 15 in which the basic tray is composed of thin sheet material of an ethylene/vinyl acetate copolymer comprising 65% to 85% ethylene and 12% to 35% vinyl acetate and having a Vicat softening point not in excess of 160° F., in which the false teeth are removable secured by an adhesive material to the basic tray wall portions adjacent said teeth and in which the heat deformable material is a wax formable at a temperature above 130° F.
Claim 18
Dependent Claim
35 words
A tray in accordance with claim 7 in which the basic tray includes a bottom portion integral with the inner and outer basic tray wall portions and in which material is a heat deformable material.
Claim 19
Dependent Claim
84 words
A tray in accordance with claim 17 in which the basic tray is composed of thin sheet material of an ethylene/vinyl acetate copolymer comprising 65% to 85% ethylene and 12% to 35% vinyl acetate and having a Vicat softening point not in excess of 160° F., in which the false teeth are removable secured by an adhesive material to the basic tray wall portions adjacent said teeth and in which the heat deformable material is a wax formable at a temperature above 130° F.
Claim 20
Dependent Claim
37 words
A tray in accordance with claim 9 in which the basic tray includes a bottom portion integral with the inner and outer basic tray wall portions and in which the formable material is a heat deformable material.
Claim 21
Dependent Claim
84 words
A tray in accordance with claim 19 in which the basic tray is composed of thin sheet material of an ethylene/vinyl acetate copolymer comprising 65% to 85% ethylene and 12% to 35% vinyl acetate and having a Vicat softening point not in excess of 160° F., in which the false teeth are removable secured by an adhesive material to the basic tray wall portions adjacent said teeth and in which the heat deformable material is a wax formable at a temperature above 130° F.
Claim 22
Dependent Claim
37 words
A tray in accordance with claim 11 in which the basic tray includes a bottom portion integral with the inner and outer basic tray wall portions and in which the formable material is a heat deformable material.
Claim 23
Dependent Claim
84 words
A tray in accordance with claim 21 in which the basic tray is composed of thin sheet material of an ethylene/vinyl acetate copolymer comprising 65% to 85% ethylene and 12% to 35% vinyl acetate and having a Vicat softening point not in excess of 160° F., in which the false teeth are removable secured by an adhesive material to the basic tray wall portions adjacent said teeth and in which the heat deformable material is a wax formable at a temperature from 130° F.
Claim 24
Dependent Claim
118 words
In a walled tray for forming a denture in situ in the tray by molding of curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said tray comprising false teeth and having uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion; the improvement in which at least one of said walls comprising a formable material secured to the outside of a corresponding wall portion of non-formable material whereby the resulting wall comprising said wall portion with formable material secured thereto may be removed by said formable material from one rest position to another position of rest adjacent said gum-receiving portion.
Claim 25
Dependent Claim
118 words
In a walled tray for forming a denture in situ in the tray by molding of curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said tray comprising false teeth and having uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion; the improvement in which at least one of said walls comprising a formable material secured to the outside of a corresponding wall portion of non-formable material whereby the resulting wall comprising said wall portion with formable material secured thereto may be removed by said formable material from one rest position to another position of rest adjacent said gum-receiving portion.
Claim 26
Dependent Claim
65 words
A tray in accordance with claim 23 for forming a lower denture in which both said inner and outer walls comprise a formable material secured to corresponding inner and outer wall portions adjacent said gum-receiving portion whereby the resulting walls comprising formable material and inner and outer wall portions may be moved by said formable material from one rest position to another position of rest.
Claim 27
Dependent Claim
17 words
A tray in accordance with claim 24 in which the formable material is a heat deformable material.
Claim 28
Dependent Claim
75 words
A tray in accordance with claim 23 for forming an upper denture in which the tray includes a palate portion integral with the inner wall, in which at least the inner wall comprises formable material secured to the corresponding inner wall portion adjacent said gum-receiving portion and in which said palate portion comprises formable material whereby said palate portion may be also moved by said formable material from one rest position to another rest position.
Claim 29
Dependent Claim
40 words
A tray in accordance with claim 26 in which said outer wall comprises formable material secured to the outside of a non-formable outer wall portion adjacent said gum-receiving portion and in which the formable material is a heat deformable material.
Claim 30
Dependent Claim
107 words
In a tray for forming an upper denture in-situ in the tray by molding of a curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said assembly comprising false teeth, uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion, and a palate, at least a portion of said walls being of non-formable material; the improvement in which at least a portion of the palate consists essentially of a formable material whereby said palate portion may be removed by said formable material from one rest position to another rest position.
Claim 31
Dependent Claim
107 words
In a tray for forming an upper denture in-situ in the tray by molding of a curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said assembly comprising false teeth, uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion, and a palate, at least a portion of said walls being of non-formable material; the improvement in which at least a portion of the palate consists essentially of a formable material whereby said palate portion may be removed by said formable material from one rest position to another rest position.
Claim 32
Dependent Claim
17 words
A tray in accordance with claim 28 in which the formable material is a heat deformable material.
Claim 33
Dependent Claim
21 words
A tray in accordance with claim 22 in which said sheet material has a stiffness not in excess of 9,000 p.s.i.
Claim 34
Dependent Claim
176 words
In a method of forming a denture in situ in a tray comprising providing a tray carrying false teeth and having uprising inner and outer walls forming with the false teeth a gum-receiving portion, disposing curable denture-forming material in at least said gum-receiving portion and molding said denture-forming material in contact with the gums of a patient or a model of the gums of a patient; the improvement comprising providing a formable tray in which at least one of said inner and outer walls is formable, disposing said formable tray over the gums of a patient or a model of the gums of the patient while said tray and gums are separated by a spacer having a thickness corresponding to the minimum thickness desired in the denture adjacent such formable wall at both occurrences, and conforming said formable tray to said gums with the spacer therebetween to provide a conformed tray in which the formable portion replicates the corresponding wall at both occurrences of the gums and differs spatially therefrom by the thickness of the spacer.
Claim 35
Dependent Claim
176 words
In a method of forming a denture in situ in a tray comprising providing a tray carrying false teeth and having uprising inner and outer walls forming with the false teeth a gum-receiving portion, disposing curable denture-forming material in at least said gum-receiving portion and molding said denture-forming material in contact with the gums of a patient or a model of the gums of a patient; the improvement comprising providing a formable tray in which at least one of said inner and outer walls is formable, disposing said formable tray over the gums of a patient or a model of the gums of the patient while said tray and gums are separated by a spacer having a thickness corresponding to the minimum thickness desired in the denture adjacent such formable wall at both occurrences, and conforming said formable tray to said gums with the spacer therebetween to provide a conformed tray in which the formable portion replicates the corresponding wall at both occurrences of the gums and differs spatially therefrom by the thickness of the spacer.
Claim 36
Dependent Claim
15 words
A method in accordance with claim 31 in which the formable portions are heat deformable.
Claim 37
Dependent Claim
30 words
A method in accordance with claim 31 in which a lower conformed tray is formed and in which both the inner and outer walls of the formable tray are formable.
Claim 38
Dependent Claim
31 words
A method in accordance with claim 31 in which the inner and outer formable walls comprise plastic sheet material and a formable material secured to the outside of said sheet material.
Claim 39
Dependent Claim
32 words
A method in accordance with claim 33 in which at least a portion of the inner and outer walls adjacent the upper portion of the gum-receiving portion consist essentially of formable material.
Claim 40
Dependent Claim
15 words
A method in accordance with claim 33 in which the formable portions are heat deformable.
Claim 41
Dependent Claim
15 words
A method in accordance with claim 35 in which the formable portions are heat deformable.
Claim 42
Dependent Claim
36 words
A method in accordance with claim 34 in which the sheet material is a polymeric material having a Vicat softening point not in excess of 160° F. and a stiffness not in excess of 9,000 p.s.i.
Claim 43
Dependent Claim
28 words
A method in accordance with claim 31 in which an upper tray is formed and in which the tray includes a palate portion integral with the inner wall.
Claim 44
Dependent Claim
17 words
A method in accordance with claim 39 in which the inner wall and palate portion are formable.
Claim 45
Dependent Claim
14 words
A method in accordance with claim 39 in which the outer wall is formable.
Claim 46
Dependent Claim
19 words
A method in accordance with claim 39 in which the inner and outer walls and palate portion are formable.
Claim 47
Dependent Claim
35 words
A method in accordance with claim 42 in which the inner and outer formable walls and formable palate portion comprise plastic sheet material and a formable material secured to the outside of said sheet material.
Claim 48
Dependent Claim
15 words
A method in accordance with claim 42 in which the formable portions are heat deformable.
Claim 49
Dependent Claim
35 words
A method in accordance with claim 39 in which the inner and outer walls and palate portion are formable, and in which at least a portion of said palate portion consists essentially of formable material.
Claim 50
Dependent Claim
40 words
A method in accordance with claim 39 in which at least a portion of the inner and outer walls adjacent the upper portion of the gum-receiving portion and essentially the entirety of the palate portion consist essentially of formable material.
Claim 51
Dependent Claim
15 words
A method in accordance with claim 45 in which the formable portions are heat deformable.
Claim 52
Dependent Claim
15 words
A method in accordance with claim 46 in which the formable portions are heat deformable.
Claim 53
Dependent Claim
177 words
In a method of forming an upper denture in situ in a tray comprising providing a tray carrying false teeth and having uprising inner and outer walls forming with the false teeth a gum-receiving portion and a palate, disposing curable denture-forming material in at least said gum-receiving portion and molding said denture-forming material in contact with the gums of a patient or a model of the gums of a patient; the improvement comprising providing a tray in which at least a portion of said palate is formable, disposing said tray over the gums of a patient or a model of the gums of the patient while said tray and palate of the patient are separated by a spacer having a thickness corresponding to the minimum thickness desired in a denture adjacent such formable palate portion, and conforming such formable palate portion to the patient's palate with the spacer therebetween to provide a conformed tray in which the formable palate portion replicates the corresponding palate of the patient and differs spatially therefrom by the thickness of the spacer.
Claim 54
Dependent Claim
177 words
In a method of forming an upper denture in situ in a tray comprising providing a tray carrying false teeth and having uprising inner and outer walls forming with the false teeth a gum-receiving portion and a palate, disposing curable denture-forming material in at least said gum-receiving portion and molding said denture-forming material in contact with the gums of a patient or a model of the gums of a patient; the improvement comprising providing a tray in which at least a portion of said palate is formable, disposing said tray over the gums of a patient or a model of the gums of the patient while said tray and palate of the patient are separated by a spacer having a thickness corresponding to the minimum thickness desired in a denture adjacent such formable palate portion, and conforming such formable palate portion to the patient's palate with the spacer therebetween to provide a conformed tray in which the formable palate portion replicates the corresponding palate of the patient and differs spatially therefrom by the thickness of the spacer.
Claim 55
Dependent Claim
15 words
A method in accordance with claim 49 in which the formable portion is heat deformable.
Claim 56
Dependent Claim
18 words
A method in accordance with claim 49 in which said formable palate portion consists essentially of formable material.
Claim 57
Dependent Claim
18 words
A tray in accordance with claim 10 in which the formable material is a spreadable heat deformable material.
Claim 58
Dependent Claim
19 words
A tray in accordance with claim 21 in which the heat deformable material is a spreadable heat deformable material.
Claim 59
Dependent Claim
18 words
A tray in accordance with claim 26 in which the formable material is a spreadable heat deformable material.
Claim 60
Dependent Claim
19 words
A tray in accordance with claim 27 in which the heat deformable material is a spreadable heat deformable material.
Claim 61
Dependent Claim
19 words
A tray in accordance with claim 29 in which the heat deformable material is a spreadable heat deformable material.
Claim 62
Dependent Claim
19 words
A method in accordance with claim 32 in which the heat deformable material is a spreadable heat deformable material.
Claim 63
Dependent Claim
18 words
A method in accordance with claim 45 in which the formable material is a spreadable heat deformable material.
Claim 64
Dependent Claim
19 words
A method in accordance with claim 50 in which the heat deformable material is a spreadable heat deformable material.
Claim 65
Dependent Claim
111 words
In a walled tray for forming a denture in-situ in the tray by molding of curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said tray comprising false teeth and having uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion; the improvement in which at least one of said walls comprises a formable material and said false teeth being formed of a material different from said formable material, the resulting formable wall being movable by reason of said formable material from one rest position to another position of rest adjacent said gum-receiving portion.
Claim 66
Dependent Claim
111 words
In a walled tray for forming a denture in-situ in the tray by molding of curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said tray comprising false teeth and having uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion; the improvement in which at least one of said walls comprises a formable material and said false teeth being formed of a material different from said formable material, the resulting formable wall being movable by reason of said formable material from one rest position to another position of rest adjacent said gum-receiving portion.
Claim 67
Dependent Claim
17 words
A tray in accordance with claim 60 in which the formable material is a heat deformable material.
Claim 68
Dependent Claim
19 words
A tray in accordance with claim 61 in which the heat deformable material is a spreadable heat deformable material.
Claim 69
Dependent Claim
106 words
In a tray for forming an upper denture in-situ in the tray by molding of a curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said tray comprising false teeth, uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion, and a palate; the improvement in which at least a portion of the palate consists essentially of a formable material, said teeth being formed of a material different from said formable material, said palate portion being movable by said formable material from one rest position to another rest position.
Claim 70
Dependent Claim
106 words
In a tray for forming an upper denture in-situ in the tray by molding of a curable denture-forming material in contact with the gums of a patient or a model of the gums of a patient, said tray comprising false teeth, uprising inner and outer walls defining with the top of the false teeth a gum-receiving portion, and a palate; the improvement in which at least a portion of the palate consists essentially of a formable material, said teeth being formed of a material different from said formable material, said palate portion being movable by said formable material from one rest position to another rest position.
Claim 71
Dependent Claim
17 words
A tray in accordance with claim 63 in which the formable material is a heat deformable material.
Claim 72
Dependent Claim
19 words
A tray in accordance with claim 64 in which the heat deformable material is a spreadable heat deformable material.
Claim 73
Dependent Claim
133 words
A tray which functions as a former for use in forming a denture in situ, said tray assembly comprising a basic tray having inner and outer flexible walls and a flexible walled trough connecting said inner and outer walls, said walls at their upper portion defining a gum-receiving portion and to hold a set of false teeth in proper relationship to each other at the lower portion thereof, a layer of formable material intimately secured to said flexible walls on the sides thereof away from the gum-receiving portion to form a movable tray wall, said formable material being formable under sufficient force and capable of retaining said formed shape whereby said movable tray wall may be shaped from a first position of rest to a second position of rest adjacent said gum-receiving portions.
Claim 74
Dependent Claim
133 words
A tray which functions as a former for use in forming a denture in situ, said tray assembly comprising a basic tray having inner and outer flexible walls and a flexible walled trough connecting said inner and outer walls, said walls at their upper portion defining a gum-receiving portion and to hold a set of false teeth in proper relationship to each other at the lower portion thereof, a layer of formable material intimately secured to said flexible walls on the sides thereof away from the gum-receiving portion to form a movable tray wall, said formable material being formable under sufficient force and capable of retaining said formed shape whereby said movable tray wall may be shaped from a first position of rest to a second position of rest adjacent said gum-receiving portions.
Claim 75
Dependent Claim
19 words
A tray according to claim 66 in which said formable material is formable at elevated temperatures above 130° F.
Claim 76
Dependent Claim
78 words
A kit for forming a denture comprising a formable tray having a gum-receiving portion which approximates the shape of the patient's gums, a deformable spacer sheet, a shim and denture-forming materials, said formable tray having inner and outer walls, a trough between said walls defining therewith said gum-receiving portion, a plurality of artificial teeth supported in said gum-receiving portion, said walls including formable material whereby the formable walls are movable from one rest position to another rest position.
Claim 77
Dependent Claim
78 words
A kit for forming a denture comprising a formable tray having a gum-receiving portion which approximates the shape of the patient's gums, a deformable spacer sheet, a shim and denture-forming materials, said formable tray having inner and outer walls, a trough between said walls defining therewith said gum-receiving portion, a plurality of artificial teeth supported in said gum-receiving portion, said walls including formable material whereby the formable walls are movable from one rest position to another rest position.
Claim 78
Dependent Claim
35 words
A kit in accordance with claim 68 wherein said formable tray includes a palate portion, said palate portion including formable material whereby said palate portion is movable from one rest position to another rest position.
Claim 79
Dependent Claim
112 words
An assemble for forming a denture in the mouth of a dental patient comprising a tray having inner and outer walls made of formable material and approximating the shape of the patient's gums, a trough between said walls defining therewith a gum-receiving portion, a substantially U-shaped continuous slot formed in the bottom of said trough, said assembly further including a preformed unitary structure including pre-arranged individual artificial teeth and means for removable mounting said teeth in the slot of said formable tray, said removable means comprising an abbreviated basic tray, the bottom portion of which is removed forming a slot in said basic tray, thereby exposing the bottoms of the false teeth.
Claim 80
Dependent Claim
112 words
An assemble for forming a denture in the mouth of a dental patient comprising a tray having inner and outer walls made of formable material and approximating the shape of the patient's gums, a trough between said walls defining therewith a gum-receiving portion, a substantially U-shaped continuous slot formed in the bottom of said trough, said assembly further including a preformed unitary structure including pre-arranged individual artificial teeth and means for removable mounting said teeth in the slot of said formable tray, said removable means comprising an abbreviated basic tray, the bottom portion of which is removed forming a slot in said basic tray, thereby exposing the bottoms of the false teeth.
Claim 81
Dependent Claim
39 words
The assembly in accordance with claim 67 wherein said inner walls are connected by said formable material to form a palate whereby the tray is suitable for use in forming a denture for the upper portion of the mouth.
Claim 82
Dependent Claim
15 words
The assembly in accordance with claim 67 wherein said formable material is dental baseplate wax.
Claim 83
Independent Claim
184 words
A method of forming an artificial denture for the mouth of a dental patient employing a tray having a gum-receiving portion with a U-shaped continuous slot formed therein, and a preformed unitary structure comprising an abbreviated basic tray, the bottom portion of which is removed forming a slot in said basic tray, thereby exposing the bottoms of the false teeth, the method comprising: placing a deformable sheet as a spacer over said tray, a applying pressure to said tray having said spacer therein to conform said tray to the gums of a patient with the spacer between the surfaces of said tray and of said gums, removing said tray from said gums, applying a suitable amount of dental acrylic resin to said tray, placing said tray in contact with said gums with said dental acrylic resin adjacent said gum surfaces, simultaneously forcing said tray against said gums while allowing said dental acrylic resin to harden, removing said tray from said gums, and separating said tray from said hardened acrylic resin whereby said preformed unitary structure and said hardened acrylic resin form a unitary denture.
Claim 84
Independent Claim
184 words
A method of forming an artificial denture for the mouth of a dental patient employing a tray having a gum-receiving portion with a U-shaped continuous slot formed therein, and a preformed unitary structure comprising an abbreviated basic tray, the bottom portion of which is removed forming a slot in said basic tray, thereby exposing the bottoms of the false teeth, the method comprising: placing a deformable sheet as a spacer over said tray, a applying pressure to said tray having said spacer therein to conform said tray to the gums of a patient with the spacer between the surfaces of said tray and of said gums, removing said tray from said gums, applying a suitable amount of dental acrylic resin to said tray, placing said tray in contact with said gums with said dental acrylic resin adjacent said gum surfaces, simultaneously forcing said tray against said gums while allowing said dental acrylic resin to harden, removing said tray from said gums, and separating said tray from said hardened acrylic resin whereby said preformed unitary structure and said hardened acrylic resin form a unitary denture.
Claim 85
Dependent Claim
35 words
The method of claim 70 further including the step of fitting a shim into said tray in contact with said dental acrylic resin prior to placing said tray in contact with said gums or model.
Claim 86
Dependent Claim
39 words
The method of claim 71 wherein said shim is formed of woven acrylic fibers, and wherein said step of fitting said shim into said tray additionally comprises the step of soaking said shim in a solution of acrylic monomer.
Claim 87
Dependent Claim
78 words
The method of claim 72 wherein said step of applying a suitable amount of dental acrylic resin into said tray includes the steps of disposing in said tray a first layer of dental acrylic resin, then disposing in contact therewith a shim having a first surface and an opposite surface with said first surface in wetting contact with said first layer, and then disposing a second layer of dental acrylic resin in contact with said opposite shim surface.
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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |