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US 12,714,652 B2Granted
Dental impression material
AssigneeDENTSPLY SIRONA Inc.
InventorsJoachim Klee, Florian Szillat, Marjorie Yon, Jurgen H Fiedler, Jacques Lalevee, Julie Kirschner, Laura Perrard
Life of this patent
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Abstract
The present invention relates to a dental impression material adapted to be cured by visible light, comprising a compound having one or more aliphatic unsaturated groups, a compound containing at least one silicon-bonded hydrogen atom and not having more than three hydrogen atoms attached to any one silicon atom, a photoactivatable catalyst component, and a specific initiator component.
Claims10
A curable dental impression material, comprising:
- (i) a compound having one or more aliphatic unsaturated groups and in a range of from 15 to 45 weight percent of the material;
- (ii) a compound containing at least one silicon-bonded hydrogen atom and not having more than three hydrogen atoms attached to any one silicon atom and in a range of from 15 to 45 weight percent of the material;
- (iii) a particulate filler and in a range of from 15 to 40 weight percent of the material;
- (iv) a metal catalyst component consisting of platinum(0)-1,3-divinyl-tetramethyldisiloxane complex solution in vinyl terminated poly(dimethylsiloxane) in a range of from 0.1 to 4.0 weight percent of the material;
- (v) a retarder comprising a cyclic vinyl-group-containing polymethylsiloxane having a molecular weight of at most 5000 Da, and
- (vi) a photosensitizer comprising 2-isopropylthioxanthone or 1-Chloro-4-propoxy-9H-thioxanthen-9-one ranging from about 0.25 wt % to about 1.0 wt % of the material;
- wherein the retarder is different from the compound having one or more aliphatic unsaturated groups according to component (i).
4 more elements
A curable dental impression material, comprising:
- (i) a compound having one or more aliphatic unsaturated groups and in a range of from 15 to 45 weight percent of the material;
- (ii) a compound containing at least one silicon-bonded hydrogen atom and not having more than three hydrogen atoms attached to any one silicon atom and in a range of from 15 to 45 weight percent of the material;
- (iii) a particulate filler and in a range of from 15 to 40 weight percent of the material;
- (iv) a metal catalyst component consisting of platinum(0)-1,3-divinyl-tetramethyldisiloxane complex solution in vinyl terminated poly(dimethylsiloxane) in a range of from 0.1 to 4.0 weight percent of the material;
- (v) a retarder comprising a cyclic vinyl-group-containing polymethylsiloxane having a molecular weight of at most 5000 Da, and
- (vi) a photosensitizer comprising 1-Chloro-4-propoxy-9H-thioxanthen-9-one;
- wherein the retarder is different from the compound having one or more aliphatic unsaturated groups according to component (i).
4 more elements
Dependencies are inferred from the claim text.