Three-dimensional printing system and methods of use
AssigneeDENTSPLY SIRONA Inc.
InventorsNaim KARAZIVAN, Hui LU, Thomas ERTL
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Abstract
A three-dimensional printing system including a feed source of uncured filled resin material, a print head configured to apply discrete layers of a composition including upconversion phosphors, and a radiation source configured to irradiate layers of uncured filled resin material and deposited layers of the composition is provided. A method of three dimensionally printing a dental article is also provided.
Claims4
A three-dimensional printing system comprising:
- a feed source of uncured filled resin material comprising a polymerizable resin, photoinitiator, and inert filler particles;
- a print head configured to apply discrete layers of a composition comprising upconversion phosphors to predetermined surface regions of incrementally stacked layers of the uncured filler resin material in a pattern corresponding to a predetermined form of a dental article;
- and
- a radiation source configured to irradiate layers of uncured filled resin material and deposited layers of the composition comprising upconversion phosphors with a wavelength that causes to the particles to luminesce at a wavelength corresponding to an activation wavelength of the photoinitiator in the uncured filled resin material thereby curing the resin material in a region adjacent the particles to form a cured resin mass.
The printing system of 1, wherein the inorganic hosts are doped or co-doped with one or more trivalent rare earth ions selected from the group consisting of ytterbium (Yb3+), lutetium (Lu3+), thulium (Tm3+), terbium (Tb3+), erbium (Er3+), praseodymium (Pr3+), scandium (Sc3+), yttrium (Y3+) and combinations thereof.
Dependencies are inferred from the claim text.