Method for preparing mandibular angle osteotomy guide plates on basis of 3D (three-dimensional) printing

Abstract

The invention relates to the field of facial skeleton contour reconstruction operation, in particular to a method for preparing mandibular angle osteotomy guide plates on the basis of 3D (three-dimensional) printing. The method includes converting two-dimensional CT (computed tomography) data into three-dimensional models by the aid of software; simulating osteotomy on the three-dimensional modelsand designing arc-shaped osteotomy lines; extracting excision mandibular angle bone block data from the three-dimensional models and converting the excision mandibular angle bone block data into files in STL (standard template library) formats; processing the files in the STL formats by the aid of automatic reverse engineering software and completely designing guide plates; importing data into 3Dprinting machines and printing mandibular angle osteotomy guide plate prototypes; processing the mandibular angle osteotomy guide plate prototypes to obtain the ultimate mandibular angle osteotomy guide plates. The method has the advantages that the osteotomy lines can be preoperatively precisely designed on the computer three-dimensional models by the aid of computer software three-dimensional designs and 3D printing technologies, and accordingly personalized and digital osteotomy guide plates which can be completely matched with three-dimensional forms of bones of mandibular angle regions can be manufactured; entity osteotomy guide plates can be printed by the aid of the 3D printing technologies, operation region guide osteotomy is implanted during operation, and accordingly the accuracy of the operation can be improved.

Description

technical field [0001] The invention relates to the field of facial bone contour remodeling surgery, in particular to a method for preparing a mandibular angle osteotomy guide plate based on 3D printing. Background technique [0002] At present, mandibular angle arc osteotomy belongs to facial bone contour reconstruction surgery. At present, the design of bilateral osteotomy lines is mostly based on preoperative film reading (X-ray film + CT) and computer software measurement design and operation. However, how to accurately copy the preoperatively designed surgical plan and various measurement data to the patient's mandible during the operation has always been a difficult problem. Coupled with the narrow field of view of this operation, it is difficult for the operator to obtain an effective three-dimensional vision of the operation area, and the design of the osteotomy line is not accurate enough based on experience alone. If the position of the osteotomy line is too low, ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a 3D printing-based method for preparing a mandibular angle osteotomy guide, which solves the problem that the surgical field of view is narrow, and the operator only designs the osteotomy line based on experience, which is inaccurate, prone to fractures, nerve damage, etc. Complications; the operation takes a long time, and patients recover slowly after surgery: it is difficult to meet the individual needs of patients

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