Claims
- 1. A dental material comprising polymerizable unsaturated material comprising at least about 10% by weight of, a dimethacrylate of the following chemical structure: ##STR11## where R.sub.1 and R.sub.2 may be the same or different and are cyclohexyl or phenyl groups which may be substituted or unsaturated; and R.sub.3 is an aliphatic, cycloaliphatic or aromatic group having 6 to 15 carbon atoms, the remainder of said polymerizable material being at least 10% by weight of at least one acrylic or a second and different methacrylic monomer acceptable for oral application associated with dental treatment.
- 2. A dental material according to claim 1, wherein said polymerizable unsaturated material comprises about 20 to about 90% by weight of said dimethacrylate and about 10 to about 80% by weight of at least one other polymethacrylate suitable for use in dental materials.
- 3. A dental material according to claim 2, wherein said other polymethacrylate is selected from the group consisting of diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, 1,6-hexanediol dimethacrylate, trimethylolpropane trimethacrylate, 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 and 2,2 bis-(4'-methacroylphenyl)propane.
- 4. A dental material according to claim 1 comprising two parts capable of curing upon mixing of these parts, one of said parts comprising a peroxide-type polymerization initator and the other of said parts comprising a tertiary aromatic amine-type activator.
- 5. A dental material according to claim 1 comprising a light activated polymerization initiator capable of curing said dental material upon irradiation with ultraviolet or visible light.
- 6. A composite restorative material comprising glass or ceramic filler and polymerizable material,
- said polymerizable material comprising at least one first monomer and at least one second monomer,
- said first monomer being a dimethacrylate of the following structure: ##STR12## where R.sub.1 and R.sub.2 may be the same or different and are cyclohexyl or phenyl groups which may be substituted or unsubstituted; and R.sub.3 is an aliphatic, cycloaliphatic or aromatic group having 6 to 15 carbon atoms,
- said second monomer being a diluent selected from the group consisting of di- and trimethacrylates having from 10 to 18 carbon atoms,
- said diluent further being selected from the group consisting of alkylene glycol dimethacrylates, polyalkylene glycol dimethacrylates and alkanetriol trimethacrylates,
- said at least one first monomer constituting at least 20% by weight of said polymerizable material,
- said at least second monomer constituting at least 10% by weight of said polymerizable material, and
- the weight ratio of said filler to said polymerizable material being from about 1.5:1 to about 8.5:1.
- 7. A composite restorative material according to claim 6, wherein said polymerizable material comprises from about 70% to about 80% by weight of said first monomer and about 20% to about 30% of said second monomer and the weight ratio of said filler to said polymerizable material is from about 4:1 to 6:1.
- 8. A composite restorative material according to claim 6, wherein both R.sub.1 and R.sub.2 of the dimethacrylate are unsubstituted phenyl and R.sub.3 is hexamethylene or a dicyclohexyl methane group of the formula: ##STR13##
- 9. A composite restorative material according to claim 6 wherein the weight ration of said filler to said polymerizable material is from about 1.5:1 to about 6.5:1.
- 10. A composite restorative material according to claim 9 wherein said polymerizable material further comprises at least one third monomer 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 and 2,2-bis(4'-methacroylphenyl)propane, the weight ratio of said first monomer to said third monomer being from about 3:5 to 5:3.
- 11. A dental material according to claim 1 comprising a composite restorative material comprising glass or ceramic filler and polymerizable material,
- said polymerizable material comprising at least one first monomer and at least one second monomer,
- said first monomer being a dimethacrylate of the following structure: ##STR14## where R.sub.1 and R.sub.2 may be the same or different and are cyclohexyl or phenyl groups which may be substituted or unsubstituted; and R.sub.3 is an aliphatic, cycloaliphatic or aromatic group having 6 to 16 carbon atoms,
- said second monomer being a diluent selected from the group consisting of di- and trimethacrylates having 10 to 18 carbon atoms,
- said diluent further being selected from the group consisting of alkylene glycol dimethacrylate, polyalkylene glycol dimethacrylates and alkanetriol trimethacrylates,
- said at least one first monomer constituting at least 20% by weight of said polymerizable material,
- said at least second monomer constituting at least 10% by weight of said polymerizable material, and
- the weight ratio of said filler to said polymerizable material being from about 1.5:1 to 8.5:1.
CROSS REFERENCE TO OTHER CASES
This is a division of application Ser. No. 267,608, filed May 27, 1981, now U.S. Pat. No. 4,400,159 which is a CIP of Ser. No. 162,482, filed June 24, 1980.
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Divisions (1)
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Number |
Date |
Country |
Parent |
267608 |
May 1981 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
162482 |
Jun 1980 |
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