Manufacturing method of upper structure of screw-retained implant

Abstract

The invention discloses a manufacturing method of an upper structure of a screw-retained implant. The manufacturing method comprises the following steps of: filling a working model for implant restoration of missing teeth; fixing an abutment on an implant analog of the working model; manufacturing a wax pattern of an inner crown of a prosthesis and reserving a screw hole on a porcelain bridge surface at a butment part of the wax pattern; removing the wax pattern, embedding and casting to manufacture the inner crown of the prosthesis, and reserving the screw hole on a casting surface; performing porcelain piling on the inner crown of the prosthesis to manufacture an outer crown of the prosthesis and complete a metal porcelain bridge; and closing a screw channel on the abutment, which is communicated with the screw channel of the implant and bonding the metal porcelain bridge on the abutment for forming the upper structure of the implant. According to the manufacturing method disclosed by the invention, the manufacturing difficulty in a technician office of the upper structure of the screw-retained implant can be reduced on the basis of retaining the repeatable usability of the prosthesis, and the dovetailing precision between the upper structure and the implant can be simultaneously effectively improved.

Description

technical field

[0001] The invention belongs to the field of oral implantation, and relates to a method for manufacturing an implant superstructure, in particular to a method for manufacturing a screw-retained implant superstructure. Background technique

[0002] since Since the invention of oral implants, the superstructure of screw-retained implants has been widely used clinically because of its easy disassembly, easy cleaning, and good reusability. Obvious shortcomings such as high sealing accuracy. The cement-retained implant superstructure has been widely used in recent years due to its simplicity in laboratory fabrication and high sealing accuracy, but it is inconvenient to disassemble, poor in reusability, and has a tendency to be bonded during bonding. The disadvantages such as increased occlusion caused by the agent limit its application range. Although some scholars have tried to improve the retention method of the implant superstructure, the above defects have...

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