Abstract: A prosthesis design method according to an embodiment includes loading 3D oral model data from a memory, displaying an oral image and an arch line of the 3D oral model data, providing an alignment interface for aligning the oral image with the arch line, and displaying the oral image aligned with the arch line.

Abstract: A 3D scanner according to an embodiment of the present invention includes a pattern generating device irradiating a light pattern to a subject and an imaging device receiving an omni-directional image of the subject to which the light pattern is irradiated.

Abstract: Disclosed is an artificial tooth machining apparatus which protects a workpiece and first and second tools from heat and frictional contact that may occur when the workpiece is machined and enhancing machining precision by supplying water or air to the tools by a supply unit, a first nozzle portion, and a second nozzle portion, which has a lifespan lengthened by preventing chips of the workpiece or water or air from being introduced to a mechanism operation part of a base part by a discharge unit and a blocking unit, and which prevents a collision between the first tool and the second tool during machining of the workpiece by a tool collision preventing controller.