초록 ▼

A method of producing a working model for preparation of a clinical crown for attachment to an implant fixture in the mouth of a patient is described in which a laboratory analog, on which the crown is mounted during preparation, is formed as an assembly including a fixed sleeve and a detachable pin

A method of producing a working model for preparation of a clinical crown for attachment to an implant fixture in the mouth of a patient is described in which a laboratory analog, on which the crown is mounted during preparation, is formed as an assembly including a fixed sleeve and a detachable pin and wherein the crown-receiving portion of the pin element of the assembly replicates the crown-receiving portion of the implant fixture. The analog sleeve is fixedly mounted in a base segment of the model so that the analog pin bearing a crown to be prepared threadedly connected thereto can be removed from and returned to mounted installation in the model by simple sliding movement between the pin and sleeve. Also described is the resultant working model construction and the particular analog elements which also form parts of the invention.

대표청구항 ▼

[ What is claimed is:] [1.] A laboratory analog for installation in a working model for preparation of a clinical crown intended for attachment to an implant fixture installed in the mouth of a patient, comprising:an analog sleeve having the general shape along a preponderant portion of its length o

[ What is claimed is:] [1.] A laboratory analog for installation in a working model for preparation of a clinical crown intended for attachment to an implant fixture installed in the mouth of a patient, comprising:an analog sleeve having the general shape along a preponderant portion of its length of a hollow body formed as a surface of revolution and possessing an external surface-configured for locked retention in a body of solidified molding material and an axially extending internal bore;an analog pin having an external shape for sliding reception to a predetermined extent in the bore of said analog sleeve;cooperating elements in the form of cooperating flats formed on said analog sleeve and said analog pin to prevent relative rotation therebetween when said analog pin is installed in said analog sleeve;an abutment-receiving portion on an exposed, crown-receiving end of said analog pin;means in said abutment-receiving portion for attaching a clinical crown thereto, said means substantially replicating a means for attaching said crown to said implant fixture and including an axially disposed, internally threaded bore for reception of a crown-attaching screw, said internally threaded bore opening at the substantial axial center of said abutment-receiving portion of said analog pin; andcooperating detent means formed on said cooperating flats on said analog pin and in said analog sleeve operative to restrict relative axial movement therebetween upon assembly of said analog pin in said analog sleeve.