US5554665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and dispenser for making dental products
Assignee: Dentsply Research and Development Corp
•
Filing: 1995-04-28
•
Granted: 1996-09-10
•
Expires: 2015-04-28
Abstract
Abstract A method of forming dental products, such as dentures, denture relines, dental crowns, dental bridges and dental restorative materials, temporary crown, temporary bridge, provisional crown or provisional bridge, from two polymerizable paste compositions each having a complimentary component of a free radical catalyst system and a polymerizable acrylic compound. One of these paste compositions includes an oxidizing agent and a stabilizer and the other includes a reducing agent as components of a redox catalyst system for free radical polymerization. These paste compositions are mixed in a static mixer to form a polymerizing paste composition, which is then shaped into a dental prosthesis. A handheld mixing dispenser useful in carrying out this method, includes a static mixing conduit, and two containers enclosing the polymerizable paste compositions. The static mixing conduit encloses a static mixing member. The containers are adapted to be connected in fluid flow communication with the static mixing conduit. In the paste composition which includes the reducing agent a photoinitiator may be preferably included. Each container is sufficiently oxygen permeable to maintain inhibition of polymerization of the polymerizable paste composition therein for at least 12 months at 23° C.
Inventors
- 👤 Louis H. Tateosian
- 👤 Scott E. Shaffer
- 👤 Mark A. Latta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:35
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: 26
Claim 1
Independent Claim
145 words
A method of forming a denture reline to improve the fit of a denture to the soft tissue contours of the mouth of a patient, comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, mixing said polymerizable paste compositions in a static mixer to form a polymerizing paste composition, applying said polymerizing paste composition to a denture, and shaping the polymerizing paste composition to areas of soft tissue of the mouth of the patient said polymerizing paste composition substantially self curing in the patient's mouth within less than about 5 minutes.
Claim 2
Independent Claim
145 words
A method of forming a denture reline to improve the fit of a denture to the soft tissue contours of the mouth of a patient, comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, mixing said polymerizable paste compositions in a static mixer to form a polymerizing paste composition, applying said polymerizing paste composition to a denture, and shaping the polymerizing paste composition to areas of soft tissue of the mouth of the patient said polymerizing paste composition substantially self curing in the patient's mouth within less than about 5 minutes.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said second polymerizable paste composition further comprises a photoinitiator.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein said photoinitiator comprises camphorquinone.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein said applying comprises extruding said polymerizing paste composition onto said denture.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein said reducing agent is dihydroxyethyl-p-toluidine.
Claim 7
Dependent Claim
32 words
The method of claim 1 wherein said static mixer is connected in fluid flow communication with each said polymerizable paste composition and each said polymerizable paste composition is substantially free of solvent.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein each said container has an oxygen permeability coefficient of at least about 0.4×10 -10 cm 2 /sec (cm Hg).
Claim 9
Dependent Claim
27 words
The method of claim 1 wherein each said polymerizable paste composition in each said container has a shelf life of at least one year at 23° C.
Claim 10
Dependent Claim
17 words
The method of claim 1 wherein said catalyst system comprises benzoyl peroxide, benzopinacole or tertiary butyl perisononanoate.
Claim 11
Dependent Claim
23 words
The method of claim 1 wherein each said polymerizing composition is moldable for about 3 minutes before hardening to form said dental product.
Claim 12
Dependent Claim
16 words
The method of claim 1 further comprising curing said denture reline in a heat curing oven.
Claim 13
Dependent Claim
16 words
The method of claim 1 further comprising curing said denture reline in a light curing oven.
Claim 14
Dependent Claim
38 words
The method of claim 1 wherein said dental product has a specific gravity at least 0.5% greater than a corresponding product formed by hand spatulation of said polymerizable paste compositions, and forming and curing the spatulated paste composition.
Claim 15
Independent Claim
139 words
A method of forming a denture reline to improve the fit of a denture to the soft tissue contours of the mouth of a patient comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, mixing said polymerizable paste compositions in a static mixer to form a polymerizing paste composition having a redox catalyst system for the polymerization of said acrylic compound, molding said polymerizing paste composition to areas of soft tissue of the mouth of the patient to form a denture reline.
Claim 16
Independent Claim
139 words
A method of forming a denture reline to improve the fit of a denture to the soft tissue contours of the mouth of a patient comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, mixing said polymerizable paste compositions in a static mixer to form a polymerizing paste composition having a redox catalyst system for the polymerization of said acrylic compound, molding said polymerizing paste composition to areas of soft tissue of the mouth of the patient to form a denture reline.
Claim 17
Independent Claim
129 words
A method of making a denture reline to improve the fit of a denture to the soft tissue contours of the mouth of a patient comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, extruding said paste compositions through a static mixer to form a polymerizing paste, molding said polymerizing paste to areas of soft tissue in the patient's mouth and then light curing said polymerizing paste to form a denture reline.
Claim 18
Independent Claim
129 words
A method of making a denture reline to improve the fit of a denture to the soft tissue contours of the mouth of a patient comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, extruding said paste compositions through a static mixer to form a polymerizing paste, molding said polymerizing paste to areas of soft tissue in the patient's mouth and then light curing said polymerizing paste to form a denture reline.
Claim 19
Dependent Claim
25 words
The method of claim 15 further comprising removing said denture from said mold and then irradiating said denture with light in a light curing apparatus.
Claim 20
Dependent Claim
19 words
The method of claim 1, 14 or 15 further comprising placing said polymerizing paste in a light curing oven.
Claim 21
Dependent Claim
135 words
A denture reline product made by a process to improve the fit of a denture to the soft tissue contours of the mouth of a patient comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, pressing said paste compositions from at least two containers through a static mixer onto a denture to form a polymerizing paste without inclusion of air by entrapment, impressing said polymerizing paste to soft tissue in a patient's mouth to form a denture reline.
Claim 22
Dependent Claim
135 words
A denture reline product made by a process to improve the fit of a denture to the soft tissue contours of the mouth of a patient comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, pressing said paste compositions from at least two containers through a static mixer onto a denture to form a polymerizing paste without inclusion of air by entrapment, impressing said polymerizing paste to soft tissue in a patient's mouth to form a denture reline.
Claim 23
Dependent Claim
13 words
The product of claim 18 wherein said polymerizing paste is substantially porosity free.
Claim 24
Dependent Claim
127 words
A denture reline product made by a process to improve the fit of a denture to the soft tissue contours of the mouth of a patient and comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, extruding said paste compositions from at least two containers through a static mixer to form a polymerizing paste, molding said polymerizing paste to soft tissue in the patient's mouth to form a denture reline.
Claim 25
Dependent Claim
127 words
A denture reline product made by a process to improve the fit of a denture to the soft tissue contours of the mouth of a patient and comprising: providing a first polymerizable paste composition comprising a free radical generating peroxide oxidizing agent of a free radical generating catalyst system, a stabilizer effective to prevent polymerization for at least 180 days at 23° C. prior to mixing and at least one polymerizable acrylic compound, and a second polymerizable paste composition comprising a reducing agent for said peroxide and at least one polymerizable acrylic compound, extruding said paste compositions from at least two containers through a static mixer to form a polymerizing paste, molding said polymerizing paste to soft tissue in the patient's mouth to form a denture reline.
Claim 26
Dependent Claim
13 words
The product of claim 20 wherein said polymerizing paste is substantially porosity free.
References Cited (Backward Citations)
US3435012A
Cited
US3661876A
Cited
US4129611A
Cited
US3969303A
Cited
US3899382A
Cited
US4431787A
Cited
CA1102039A
Cited
CA1145880A
Cited
US4267133A
Cited
CA1148294A
Cited
CA1149538A
Cited
US4331580A
Cited
US4337349A
Cited
CA1209298A
Cited
CA1189996A
Cited
US4602076A
Cited
CA1244177A
Cited
US4674980A
Cited
CA1200046A
Cited
CA1244581A
Cited
US4538920A
Cited
CA1243796A
Cited
CA1245437A
Cited
CA1259149A
Cited
CA1262791A
Cited
US4816495A
Cited
US4657941A
Cited
EP0185431A2
Cited
US4872936A
Cited
US4806381A
Cited
US4842936A
Cited
WO1987005800A2
Cited
GB2189793A
Cited
US4771112A
Cited
US4940749A
Cited
US4880857A
Cited
US4994520A
Cited
US5033650A
Cited
US5037473A
Cited
EP0319639A1
Cited
EP0334256A2
Cited
US5091441A
Cited
CA2002017A1
Cited
CA2009471A1
Cited
US5183834A
Cited
CA2032773A1
Cited
CA2033405A1
Cited
CA2051333A1
Cited
US5218070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-10 | 2000-03-11 | 2000-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-10 | 2004-03-11 | 2004-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-10 | 2008-03-11 | 2008-09-10 | $7700.00 | Window Closed / Lapsed |