A method and system for making a prosthesis for a maxillary defect

Abstract

This application discloses a fully digital design and production method and system for a maxillary defect prosthesis, which is used to improve the production accuracy, quality and efficiency, and shorten the production cycle of the prosthesis, including: obtaining a three-dimensional digital model of the maxillary defect; According to the three-dimensional digital model, perform model observation and determine the undercut depth of the abutment; determine the retainer according to the undercut depth of the abutment; determine the large connector and the small connector according to the three-dimensional digital model; According to the three-dimensional digital model, select artificial teeth from the database, arrange the artificial teeth and determine the position of the artificial teeth; Determine the design of the maxillary defect prosthesis; according to the design of the maxillary defect prosthesis, manufacture the maxillary defect prosthesis by additive manufacturing or subtractive manufacturing. The application also discloses a fully digital design and production system for a maxillary defect prosthesis.

Description

technical field [0001] The present application relates to the technical field of oral and maxillofacial prostheses, in particular to a method and system for making a maxillary defect prosthesis. Background technique [0002] Maxillary defects often have simultaneous defects of the dentition and the maxilla, and often cause the oronasal cavity to perforate, thereby affecting the patient's chewing, swallowing, and pronunciation functions. Only a small number of patients with maxillary defects can be repaired by surgical reconstruction, and most patients still need to be repaired by prosthesis. [0003] The manufacturing method of the maxillary defect prosthesis, due to the different materials of each component, the manufacturing method and process are relatively cumbersome, the cycle is long, and the cumulative error generated by each manufacturing step is relatively large. If the maxillary defect is large, in order to reduce the weight of the prosthesis and achieve better re...

AI Technical Summary

Problems solved by technology

[0003] The manufacturing method of the maxillary defect prosthesis, due to the different materials of each component, the manufacturing method and process are relatively cumbersome, the cycle is long, and the cumulative error generated by each manufacturing step is relatively large

If the maxillary defect is large, in order to reduce the weight of the prosthesis and achieve better retention and stability, it is often necessary to make a hollow prosthesis, and the manufacturing process is more cumbersome.

For the split type prosthesis, it is necessary to make the occluder first, and after the fitting in the patient's mouth is suitable, the impression is made again to make the removable denture part, so that the number of visits to the doctor is more and the diagnosis and treatment period is longer.

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