Method for manufacturing oral prostheses stent formed by composite processing of additional and subtractive material

Abstract

The invention relates to a method for manufacturing a oral prostheses stent formed by compounding moulding of additional and subtractive materials, which comprises the following steps: 1) acquiring a three-dimensional model data of a patient's oral maxilla: directly scanning a patient's mouth through a scanning device, and directly obtaining three-dimensional point cloud data of the patient's mouth, and exporting the 3D point cloud data by the scanning software to output a triangular mesh model; 2) obtaining a CAD model of the final printable manufactured stent; 3) using a 3D printing solid stent using an additive manufacturing technology; 4) transferring the prostheses stent to-be-processed from a SLM additive manufacturing machine to a machining tool, and taking out the prostheses stent with a substrate, a support and positioning marks manufactured in step 3) from the SLM machining tool; and 5) obtaining the manufacturing coordinate system of the additive by mechanical or visual positioning method, and performing numerical control programming according to a coordinate conversion relationship between a coordinate system and a machining coordinate system to perform the subtractive material manufacturing process on the prostheses stent. The method has high processing precision and wider application range.

Description

technical field [0001] The invention relates to the field of combined manufacturing of additive and subtractive materials, and more specifically, relates to a manufacturing method of an oral prosthesis bracket combining metal additive manufacturing and machining. Background technique [0002] Maxillary defect is the most common defect in the oral and maxillofacial region with the highest incidence rate. The etiology can be mainly divided into three types: congenital factors, maxillary tumor or postoperative tumor and trauma. As an important structure of the face, the maxilla not only undertakes many physiological functions such as chewing, swallowing, and language, but also plays an important role in the morphological aesthetics of the face. Maxillary defect will not only cause serious physiological dysfunction, but also cause severe facial deformity of the patient, which will inevitably cause a double blow to the patient both physically and psychologically. [0003] The us...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, such as structural curved surface polishing and clasp ring manufacturing precision caused by the use of additive manufacturing technology, the present invention proposes a manufacturing method for oral prosthetic brackets formed by subtractive composite processing, which fully utilizes additive manufacturing technology. Combining the advantages of material manufacturing technology with the advantages of traditional subtractive manufacturing technology to make up for its shortcomings

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