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US 2023/0415408 A1Published application
Process for 3d printing of dental aligners
AssigneeBixby International Corporation
InventorsMarc GAGNON, Tim Glowik, Ethel Bermejo
Life of this patent
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Abstract
Methods of printing dental aligners with three-dimensional (3D) printing equipment and software include providing a thermoplastic material in powder form and forming the dental aligner from the powder form of the thermoplastic material, the thermoplastic material having enhanced materials properties. The thermoplastic material can be polysulfone and the resulting dental aligner can be substantially transparent and optionally tinted with a coloring agent.
Claims26
A method comprising:
- providing a polymer in powder form;
- and
- forming an object in solid form from the powder form, the object having stress relaxation of less than about 40% decrease in stress at an applied strain of about 4% over about 24 hours.
A method comprising:
- providing a polymer in powder form;
- and
- forming an object in solid form from the powder form, the object having tensile strength of greater than about 48 MPa, tensile elongation of greater than about 40%, and stress relaxation of less than about 40% decrease in stress at an applied strain of about 4% over about 24 hours.
A method comprising:
- providing a polymer as at least one of thermoplastic film, sheet and filament via extrusion process;
- converting the at least one of thermoplastic film, sheet and filament into pellets via at least one of grinding, chopping and cutting;
- grinding the pellets into polymeric particulates;
- and
- fusing the polymeric particulates in a three-dimensional (3D) printing equipment in conjunction with a 3D printing software to produce an object in solid form, the object having tensile strength of greater than about 48 MPa, tensile elongation of greater than about 40%, and stress relaxation of less than about 40% decrease in stress at an applied strain of about 4% over about 24 hours.
2 more elements
Dependencies are inferred from the claim text.