METHOD FOR DIRECT LASER SYNTHESIS OF SUPERELASTIC ENDODONTIC INSTRUMENTS FROM TITANIUM NICKELIDE Russian patent published in 2023 - IPC B22F10/28 B33Y10/00 B33Y80/00 A61C5/42 

FIELD: additive manufacturing; 3D printing.

SUBSTANCE: invention relates to the field of additive manufacturing, in particular to a method for obtaining self-adapting files by 3D printing. It can be used for the manufacture of dental instruments with superelastic properties, in particular for cleaning and/or shaping and/or canal widening. To produce a superelastic self-adaptive file, the initial titanium nickelide powder is prepared, a thin-walled 3D model of the self-adaptive file is prepared using CAD, then converted into an STL model, and the model is separated into separate layers using software. An executable file containing the coordinates of the scan vectors for the laser in each layer is prepared using the STL model with a single surface, the normal vectors of which are facing the construction axis, and loaded into the selective laser melting unit (SLM). Titanium nickelide powder is loaded into the batcher hopper of the installation and layer-by-layer synthesis of a self-adapting file is carried out by the SLM method on a titanium nickelide substrate. Each layer is formed by single laser passes until a self-adapting file is obtained. The resulting file contains a cylindrical base and a mesh structure, between which additional bridges are made. All structural elements of the self-adapting file are made with angles between the overhanging surfaces and the substrate plane of more than 35°.

EFFECT: increase in the resolution of the SLM method for the synthesis of micro-objects from titanium nickelide is provided.

4 cl, 3 dwg