Unsupported three-dimensional printing method of oral diagnosis model

Abstract

The invention relates to an unsupported three-dimensional printing method of an oral diagnosis model. The method comprises the following steps: 1) directly scanning the oral cavity by an intraoral three-dimensional scanner to obtain dentition gingival STL data; 2) adding a pedestal plane approximatively parallel to a |occlusion| plane to a model in three-dimensional data editing software; 3) making the median sagittal plane of the digital model perpendicular to the plane of a printing platform, allowing anterior teeth upward; 4) making a horizontal spacing between two continuous layers of all surface data to be printed of the model in the Z-axial direction less than 1 / 2 of the thickness of a printing layer; 5) controlling a material nozzle to spirally print along a data surface; 6) setting the wall thickness of the model to be the optimum printing width of single feed; 7) setting the internal filling rate of the printing to be zero; and 8) generating a layered printing code, and inputting the layered printing code to three-dimensional printing control software of a printer in order to start printing. The method is suitable for the unsupported high-efficiency three-dimensional printing of three-dimensional scanning data of various models of the stomatology department.

Description

technical field [0001] The invention relates to a three-dimensional printing method for an oral cavity model, in particular to an unsupported three-dimensional printing method for an oral cavity diagnostic model. Background technique [0002] With the development of oral medical digital technology and intraoral three-dimensional scanning technology, intraoral three-dimensional scanning can directly obtain the three-dimensional surface data of the patient's dentition and gums, and can directly obtain the patient's oral three-dimensional graphic information, that is, the three-dimensional scanning data of the dental model. [0003] Compared with the traditional impression plaster recording method, the digital model of the patient obtained by 3D scanning can be directly stored in the hard disk, and can be 3D printed and used at any time when needed, without storing a large number of physical models, which saves space and reflects energy saving and environmental protection conce...

AI Technical Summary

Problems solved by technology

[0004] However, when printing the model, if the physical printing is used, it will not only waste the printing materials, but also the efficiency is extremely low, which is not conducive to the high-efficiency and fast-paced medical environment of dental clinics.

When using hollow printing, due to the complexity of the surface morphology of the oral dentition and gums, it is difficult to add printing supports perfectly. Even if a complete support is added, it will take a lot of time to remove the support after printing, which may affect the surface of the teeth. detail clarity