All-ceramic tooth preparation method based on facial and oral dentition three-dimensional scanning technology

Abstract

The invention relates to an all-ceramic tooth preparation method based on a facial and oral dentition three-dimensional scanning technology. The method comprises the following steps: carrying out spatial three-dimensional registration on facial three-dimensional data and dentition three-dimensional data of a patient through a plurality of feature points on the surfaces of teeth and gingiva of thepatient; designing a lip surface three-dimensional form of the upper anterior teeth and / or the lower anterior teeth to enable the tooth protrusion and the incisor curve to accord with the upper lip shape and the lower lip shape of the patient; copying the three-dimensional shapes of the tongue surface of the original upper anterior tooth and the incisor end of the lower anterior tooth of the patient, and adjusting the three-dimensional shapes so that the forward extension and lateral movement tracks of the lower anterior tooth of the patient accord with the leading characteristics of the patient before repair to obtain a lingual three-dimensional shape; performing data fusion on the lip surface three-dimensional form and the lingual side three-dimensional form to form a three-dimensional digital model with an expected repair effect; and performing three-dimensional printing based on the three-dimensional digital model with the expected repair effect to obtain a resin model, and preparing the all-ceramic tooth according to the obtained resin model. Real three-dimensional aesthetic design can be carried out for the patient.

Description

technical field [0001] The invention relates to the technical field of oral restoration, in particular to a method for preparing all-ceramic teeth based on the three-dimensional scanning technology of facial and oral cavity dentition. Background technique [0002] With social progress and economic development, people pay more and more attention to the health and beauty of teeth. Dental aesthetic restoration not only restores the complete shape of the patient's teeth, but also achieves the coordination and unity of the color, shape and dynamic function of the teeth, gums, lips and face, resulting in an aesthetic feeling. This puts forward higher requirements for prosthodontists, not only to master the basic theories of normal tooth morphology, anatomy and physiological functions, but also to have high aesthetic awareness and aesthetic quality. [0003] Digital Smile Design (Digital Smile Design, DSD) is to use intelligent computer and high-quality digital software, comprehen...

AI Technical Summary

Problems solved by technology

However, due to technical and equipment reasons, most of the DSD technologies reported at home and abroad currently use the method of virtual design of two-dimensional images of patients, which cannot accurately predict the effect of three-dimensional repairs. This is also the current bottleneck affecting the further development of DSD technologies.

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