Dental implants include titanium components composed of sintered bodies made of titanium or titanium alloys; And ceramic components composed of oxide based ceramics, as well as ceramic components fixed on titanium components. The titanium component has a recess, and the ceramic component has a protrusion connected to the recess and the hole, and the titanium component covers the protrusion of the ceramic component. The protrusion has an increased cross-sectional area, which increases along the direction away from the base end of the protrusion towards the dead end of the depression. The titanium component is firmly fixed and joined to the ceramic component in a state where a portion of titanium or titanium alloy penetrates into the protruding holes of the ceramic component.

 

The method for designing dental implant prostheses includes the following steps: arranging a reference fixture and combining the reference fixture into a fixture installed in the patient's mouth, the reference fixture having at least one feature point, the fixture having a connection interface, and the reference fixture having a relative joint interface; Scan the patient's mouth to obtain oral digital data and reference fixture digital data with at least one feature point digital data; Select a digital dental implant prosthesis from the prosthesis database in the computer, overlap the digital dental implant prosthesis to form a digital positioning fixture combined with the connection interface, and continue the overlap and positioning data of the digital positioning fixture and the reference fixture to combine the digital data of the reference fixture into the connection interface; And adjust the position, size, and angle of the digital dental implant to obtain the most suitable digital implant for the patient.