Patent ID: 8406909

Claim:
A method of designing a dental-implant prosthesis, comprising steps of: a) arranging a referential jig corresponding to at least one fixture installed in a patient's oral cavity and then combining the referential jig into the at least one fixture, the referential jig having at least one feature point exposed outside the at least one fixture and dental gum in the patient's oral cavity, the fixture having a connection interface formed at a top side thereof, the referential jig having an opposite-joint interface formed at a bottom side thereof and corresponding to the connection interface; b) scanning the patient's oral cavity by a scanner to acquire an oral digital data, a referential-jig digital data, and a feature-point digital data, and then saving those digital data into a computer; c) selecting one of digital dental-implant prostheses from a prosthetic database in the computer, the selected digital dental-implant prosthesis overlapping a digital positioning jig, the digital positioning jig having the same pattern feature points as those of the referential jig, the digital positioning jig being combinable with the connection interface, the digital dental-implant prosthesis having the same opposite-joint interface formed at a bottom side thereof as that of the referential jig; operating the computer to proceed with overlapping and localization by means of the feature points of the digital positioning jig and the feature-point data of the referential-jig digital data, removing the referential-jig digital data and the digital positioning jig, and then inferring a digital fixture, a digital connection interface, and respective positions of the digital fixture and the digital connection interface to acquire a configuration data of combination and localization of the digital dental-implant prosthesis and the connection interface; and d) identifying the relationship among the digital dental-implant prosthesis, abutting teeth and an opposite tooth according to a space relationship between the oral digital data and the digital dental-implant prosthesis, and finally adjusting the position, size, and angle of the digital dental-implant prosthesis to acquire the digital dental-implant prosthesis 33 which is the most applicable to the patient.