Abstract: A big data-based intelligent algorithm for an intraoral prosthesis design scheme establishes an intraoral prosthesis design scheme database based on predetermined data of partially edentulous jaw, and is configured to conduct an accurate search for data of partially edentulous jaw to obtain a recommendation list of an accurate theme and a corresponding design scheme for an intraoral prosthesis design, or conduct a fuzzy search for data of partially edentulous jaw to obtain a recommendation list of a fuzzy theme and a corresponding design scheme for an intraoral prosthesis design. When oriented to a digital design of a removable partial denture, the intelligent system for the intraoral prosthesis design scheme constructed based on this intelligent algorithm displays a large number of intraoral prosthesis design schemes of different design themes to dental technicians in a three-dimensional manner.

Abstract: The present disclosure provides a double-powder rapid switching type selective laser melting apparatus. The laser melting apparatus includes a building system, a powder recovery system, and a gas circulation system. A powder cylinder and a building cylinder are fixed to a lower end of a building chamber of the building system. A movable cylinder body is removably mounted at an upper end inside the powder cylinder and the building cylinder. After printing with one metal powder is completed, it is convenient and efficient to switch to another metal powder for printing. An air suction port of the gas circulation system is provided with two openings and the air suction port faces a building platform to suck smoke and dust generated during printing with different metal powders. The powder recovery system includes a top powder suction port and a bottom powder suction port for respectively recovering the different metal powders.

Abstract: A big data-based intelligent algorithm for an intraoral prosthesis design scheme establishes an intraoral prosthesis design scheme database based on predetermined data of partially edentulous jaw, and is configured to conduct an accurate search for data of partially edentulous jaw to obtain a recommendation list of an accurate theme and a corresponding design scheme for an intraoral prosthesis design, or conduct a fuzzy search for data of partially edentulous jaw to obtain a recommendation list of a fuzzy theme and a corresponding design scheme for an intraoral prosthesis design. When oriented to a digital design of a removable partial denture, the intelligent system for the intraoral prosthesis design scheme constructed based on this intelligent algorithm displays a large number of intraoral prosthesis design schemes of different design themes to dental technicians in a three-dimensional manner.