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US 2017/0087062 A1Published application
Dental composites
AssigneeOregon Health & Science University
InventorsCarmem S. Pfeifer, Jack L. Ferracane
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Abstract
Disclosed herein are methacrylate compounds that can be used as components of dental composites. Also disclosed are dental composites comprising the compositions and thiourethane oligomers.
Claims20
A compound of the formula:
- wherein X is aryl or 1-4 carbon alkyl,
- wherein Y is N or C,
- wherein R1 is H or alkyl and R2 is no atom when Y is N
- wherein R1 is H or alkyl and R2 is H or alkyl when Y is C;
- and
- wherein R3 and R4 are H or alkyl;
- provided that R1 and R2 are not H when X is butyl.
4 more elements
A method of preparing a dental composite, the method comprising:
- contacting an isocyanate compound selected from 1,6-hexanediol-diisocyanate, 1,3-bis(1-isocyanato-1methylethylbenzene), or bis(4-isocyanotocyclohexyl) methane with a thiol compound selected from methyl-3-mercaptopriopionate, pentaerythritol tetra-3-mercaptopriopionate or trimethylol-tris-3-mercaptopropionate in the presence of triethylamine to make a thiourethane oligomer, wherein the isocyanate compound is added in sufficient excess that the thiourethane oligomer comprises pendant thiols;
- adding the thiourethane oligomer to the composite;
- adding a dimethacrylate composition to the composite;
- adding a tertiary amine, d-camphorquinone, and an inhibitor to the composite;
- adding a filler composition to the composite,
- wherein the thiourethane oligomer comprises at least 10% of the composite.
3 more elements
Dependencies are inferred from the claim text.