High strength three dimensional fabricating material systems and methods for producing dental products
AssigneeDENTSPLY SIRONA Inc.
InventorsBenjamin Jiemin SUN, Andrew M. LICHKUS
Life of this patent
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Abstract
This invention relates to printable high strength/toughness polymerizable material systems for making dental products such as artificial teeth, dentures, splints, veneers, inlays, onlays, orthodontic appliances, aligners, copings, frame patterns, crowns and bridges and the like. A DLP, stereolithography, modified or their modification and combination based printer is used to cure polymerizable material in several different methods of this invention to build-up the object. The resulting three-dimensional object has good dimensional stability.
Claims20
A method for forming a dental component, the method comprising the steps of:
- (a) providing a carrier and a build plate, said build plate comprising a transparent member, said transparent member comprising a first build surface with said first build surface and said carrier defining a first build region therebetween;
- (b) filing said first build region with a first polymerizable liquid, said first polymerizable liquid contacting said first build surface,
- (c) irradiating said first build region through said build plate to produce a solid polymerized region from said first polymerizable liquid in said first build region;
- (d) advancing said carrier with said first polymerized region adhered thereto away from said first build surface on said build plate to create a subsequent first build region between said polymerized region and said first build surface;
- (e) repeat steps (c) and (d) to form a three-dimensional object having a first surface and a second surface adhered to said carrier, the first surface of the three-dimensional object between positioned between the first build surface and a second surface of the three-dimensional object;
- (f) filing a second build region with a second polymerization liquid, wherein an exposed top surface of the second polymerization liquid and a second build surface define the second build region therebetween;
- and wherein the second polymerizable liquid is different than the first polymerizable liquid;
- (g) repositioning the three-dimensional object so that the first surface of the three-dimensional object is positioned between the exposed top surface of the second polymerizable liquid and the second build surface;
- (h) irradiating the second build region to produce a second solid polymerized region from said second polymerizable liquid in said second build region;
- (i) advancing said carrier with the three-dimensional object and the said second polymerized region adhered the three-dimensional object away from said exposed top surface of the second polymerizable liquid to create a subsequent second build region between said second polymerized region and said second build surface;
- (j) repeat steps (h) and (i) to form said three-dimensional dental component.
Dependencies are inferred from the claim text.