Dental resin materials, method of manufacture, and uses thereof
AssigneePentron Clinical Technologies, LLC
InventorsWeitao Jia, Shuhua Jin
Life of this patent
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Abstract
A dental resin composition is disclosed, comprising a polycarbonate-modified diphenoxy diacrylate having a monomer structure (I): 1 wherein R is CH3 or H; b is one or zero; A is (CH2)nO; n is an integer from 1 to 10, preferably from 1 to 5; X is an alkoxy or cycloalkoxy group having from one to six carbon atoms, for example, 2,2-propylene or —CH2—, or —S— or —O—; i is 1 or 0; and wherein M is —(C1-10 alkyl)O—, —(CH2)pO—, or —CH(CH3)CH2O—, m is an integer from 1 to 10, and p is an integer from 1 to 4. Preferably, R is methyl. The composition and described filler material are suitable for use in dental restorations, and provide improved wear resistance and other properties.
Claims27
A polycarbonate-modified diphenoxy diacrylate resin composition having a monomer formula:
- 6
- wherein R is CH3 or H;
- b is one or zero;
- A is O(CH2)n;
- n is an integer from 1 to 10;
- X is an alkyl or cycloalkyl group having from one to six carbons, S, or O;
- i is 1 or 0;
- M is an alkyl or cycloalkyl group having from one ten carbon atoms;
- m is an integer from one to ten;
- and q is an integer from 1 to about 100.
A filler material comprising:
- silica particles derived from a nanoparticulate silica sol, the filler material having at least one crystalline phase.
A method of making a filler material comprising at least one crystalline phases, comprising:
- drying an amorphous, nanoparticulate silica sol at a temperature to remove liquid therefrom;
- and
- heating the dried silica sol to a temperature effective to form at least one crystalline phase therein.
Dependencies are inferred from the claim text.