Patent US4380432A successfully refreshed from Google Patents.
US4380432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for adhering structures to teeth
Assignee: Sankin Industry Co Ltd
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Filing: 1980-09-03
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Granted: 1983-04-19
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Expires: 2000-09-03
Abstract
Abstract Adhesives and methods are provided for fixed prosthesis by bonding a pontic to abutment teeth. The adhesive is preferably a methacrylate based resin adhesive comprising 2.5-30% of an elastomer which is a polymer of a substituted or unsubstituted butadiene monomer. A preferred etchant for preparing the abutment for adhesive bonding is 2-15% HCl. The prosthesis technique does not irreversibly affect the abutment teeth. The preferred adhesive may also be used for immobilizing injured or periodontically affected teeth or for stabilizing teeth in order to retain the results of orthodontic treatment.
Inventors
- 👤 Jan A. Orlowski
- 👤 David V. Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:07
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/70; A61K6/71; A61K6/76; A61K6/77
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
192 words
A method for adhesively mounting in the mouth a dental article which is a pontic or a fixed bridge of one or more pontic teeth by securing bonding surfaces on the article to be mounted in the mouth to support surfaces respectively of abutment teeth that are adjacent the mounting location of the article but at opposite sides of it respectively, comprising the steps of: (i) etching said support surfaces of said abutment teeth with a suitable chemical etchant; (ii) applying a curable dental adhesive to said bonding surfaces on said article and to said etched support surfaces of said abutment teeth; and (iii) contacting said bonding surfaces with said support surfaces, each surface containing said applied dental adhesive of step (ii), whereby said adhesive hardens to bond the dental article in place, wherein said dental adhesive is a methacrylate based dental adhesive comprising from about 2.5% to about 30% by weight of an elastomer or a mixture of two or more of said elastomers, said elastomer or elastomers being selected from the group consisting of homopolymers and copolymers of at least one conjugated diene monomer containing 4 to 10 carbon atoms.
Claim 2
Independent Claim
192 words
A method for adhesively mounting in the mouth a dental article which is a pontic or a fixed bridge of one or more pontic teeth by securing bonding surfaces on the article to be mounted in the mouth to support surfaces respectively of abutment teeth that are adjacent the mounting location of the article but at opposite sides of it respectively, comprising the steps of: (i) etching said support surfaces of said abutment teeth with a suitable chemical etchant; (ii) applying a curable dental adhesive to said bonding surfaces on said article and to said etched support surfaces of said abutment teeth; and (iii) contacting said bonding surfaces with said support surfaces, each surface containing said applied dental adhesive of step (ii), whereby said adhesive hardens to bond the dental article in place, wherein said dental adhesive is a methacrylate based dental adhesive comprising from about 2.5% to about 30% by weight of an elastomer or a mixture of two or more of said elastomers, said elastomer or elastomers being selected from the group consisting of homopolymers and copolymers of at least one conjugated diene monomer containing 4 to 10 carbon atoms.
Claim 3
Dependent Claim
27 words
A method according to claim 1, wherein said etching step (i) comprises treating said support surfaces for 30-300 seconds with a B 2-15% solution of hydrochloric acid.
Claim 4
Dependent Claim
16 words
A method according to claim 1, wherein said conjugated diene monomers are hydrocarbons or chlorinated hydrocarbons.
Claim 5
Dependent Claim
27 words
A method according to claim 1, wherein said conjugated diene monomers of said adhesive are selected from the group consisting of 1,3-butadiene, isoprene, chloroprene, 1,3-pentadiene and 2,3-dimethyl-1,3-butadiene.
Claim 6
Dependent Claim
36 words
A method according to claim 1, wherein said copolymers of said adhesive are copolymers of at least one of said conjugated diene monomers with at least one alkylene monomer having from 2 to 10 carbon atoms.
Claim 7
Dependent Claim
29 words
A method according to claim 1, wherein said homopolymers or copolymers of said adhesive are selected from the group consisting of polybutadiene, polyisoprene, polychloroprene, styrene-butadiene, acrylonitrile-butadiene, acrylonitrile-butadiene-styrene, and methylmethacrylatebutadiene-styrene.
Claim 8
Dependent Claim
24 words
A method according to claim 1, wherein said adhesive comprises from about 40% to about 95% by weight of at least one methacrylic monomer.
Claim 9
Dependent Claim
39 words
A method according to claim 1, wherein said elastomer of said adhesive is at least partially undissolved in the liquid portion of the adhesive, the undissolved elastomer being present in the form of a colloidal or submicron sized dispersion.
Claim 10
Dependent Claim
21 words
A method according to claim 1, wherein said adhesive comprises from about 5% to about 50% by weight of inorganic filler.
Claim 11
Dependent Claim
40 words
A method according to claim 9, wherein said filler of said adhesive is selected from the group consisting of fumed silica, precipitated silica, amorphous silica, crystalline silica, quartz, glass, calcium silicate, calcium phosphate, alumina, zeolites, cross-linked polyalkylmethacrylates, polyurethanes and nylon.
Claim 12
Dependent Claim
22 words
A method according to claim 1, wherein said adhesive comprises at least 10% by weight of at least one polyfunctional methacrylate monomer.
Claim 13
Dependent Claim
56 words
A method according to claim 1, wherein said adhesive comprises two parts capable of curing upon mixing of these parts, one of said parts comprising a peroxide-type polymerization initiator and the other of said parts comprising a tertiary aromatic amine-type activator, and said method further comprises mixing together said parts prior to said application step (ii).
Claim 14
Dependent Claim
231 words
A method according to claim 1, wherein said adhesive comprises: (a) from about 45% to about 65% by weight of a cycloaliphatic or aromatic polyfunctional methacrylate or a mixture of two or more of said cycloaliphatic or aromatic polyfunctional methacrylates, said cycloaliphatic or aromatic polyfunctional methacrylate or methacrylates being selected from the group consisting of 2,2-bis[4'(3"-methacroyl-2"-hydroxypropoxy)phenyl]propane, 2,2-bis[4'(2"-methacroylethoxy)phenyl]propane, 2-methacroylethyl-3-methacroyl-2-hydroxypropyl tetrahydrophthalate, 2-methacroylethyl-3-methacroyl-2-hydroxypropyl hexahydrophthalate, 2,2-bis(4'methacroylphenyl)propane, 1,4-bis(methacroylmethyl)benzene and 1,4-bis (methacroylmethyl)cyclohexane; (b) from about 10% to about 30% by weight of an aliphatic polyfunctional methacrylate or a mixture of two or more of said aliphatic polyfunctional methacrylates, said aliphatic polyfunctional methacrylate or methacrylates being selected from the group consisting of ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, pentaethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, 1,6-hexanediol dimethacrylate, butane diol dimethacrylate, and butene diol dimethacrylate; (c) from about 10% to about 25% by weight of said elastomer or a mixture of said elastomers, said elastomer or elastomers being selected from the group consisting of polybutadiene, polyisoprene, polychloroprene, styrenebutadiene, acrylonitrile-butadiene, acrylonitrile-butadiene-styrene and methylmethacrylate-butadiene-styrene; and (d) from about 5% to about 15% by weight of an inorganic filler or a mixture of said fillers, said filler or fillers having an average particle size of 40 microns or less and being selected from the group consisting of fumed silica, precipitated silica, amorphous silica, crystalline silica, quartz, glass, calcium silicate, calcium phosphate, alumina, zeolites, cross-linked polyalkylmethacrylates, polyurethanes and nylons.
Claim 15
Dependent Claim
26 words
A method according to claim 13 wherein said etching step (i) comprises treating said support surfaces for 30-300 seconds with a 2-15% solution of hydrochloric acid.
Claim 16
Dependent Claim
17 words
A method according to claim 14 wherein the concentration of the hydrochloric acid is 6 to 12%.
Claim 17
Dependent Claim
36 words
A method according to claim 15 wherein (a) is a mixture of 2,2 bis[4'(2"-methacroylethoxy)phenyl]-propane and 2,2 bis[4'(3-methacroyl-2-hydroxypropoxy)-phenyl]propane, (b) is triethylene glycol dimethacrylate, (c) is a copolymer of methyl methacrylate, butadiene and styrene, and (d) is silica.
Claim 18
Dependent Claim
36 words
A method according to claim 14 wherein (a) is a mixture of 2,2 bis[4'(2"-methacroylethoxy)phenyl]-propane and 2,2 bis[4'(3-methacroyl-2-hydroxypropoxy)-phenyl]propane, (b) is triethylene glycol dimethacrylate, (c) is a copolymer of methyl methacrylate, butadiene and styrene, and (d) is silica.
Claim 19
Dependent Claim
36 words
A method according to claim 13 wherein (a) is a mixture of 2,2 bis[4'(2"-methacroylethoxy)phenyl]-propane and 2,2 bis[4'(3-methacroyl-2-hydroxypropoxy)-phenyl]propane, (b) is triethylene glycol dimethacrylate, (c) is a copolymer of methyl methacrylate, butadiene and styrene, and (d) is silica.
Claim 20
Dependent Claim
17 words
A method according to claim 2 wherein the concentration of the hydrochloric acid is 6 to 12%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |