Production method and system of maxillary defect prosthesis

Abstract

The application discloses a full digital design and a production method and system of a maxillary defect prosthesis in order to improve production accuracy, quality and efficiency and shorten a production period of the prosthesis. The production method comprises the steps of: acquiring a maxillary defect three-dimensional digital model; according to the three-dimensional digital model, carrying out model observation and determining an undercut depth of an abutment tooth; according to the undercut depth of the abutment tooth, determining retainers; according to the three-dimensional digital model, determining a big connector and a small connector; according to the three-dimensional digital model, selecting artificial teeth from a database, arranging the artificial teeth and determining positions of the artificial teeth; according to the artificial teeth, the retainers, the big connector and the small connector, determining the design of the maxillary defect prosthesis; and according tothe design of the maxillary defect prosthesis, producing the maxillary defect prosthesis by an additive manufacturing method or a subtractive manufacturing method. The application further discloses the full digital design and the production system of the 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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