Preparation method of personalized and integrated all-ceramic post-and-core of dentistry

Abstract

The invention provides a manufacture method of a clinical personalized and integrated all-ceramic post-and-core of dentistry. The manufacture method is characterized in that a high-precision and short-wavelength visible scanner is adopted and directly used for scanning intraoral defected teeth subjected to root canal preparation, the CAD / CAM (Computer Aided Design / Computer Aided Manufacturing) central incisor prosthetic design is adopted, the design of integrating the post and the core is accomplished, and then the incisor back-cut method design is carried out to accomplish the design of the integrated all-ceramic post-and-core, and numerical control processing equipment is adopted and used for processing in order to accomplish the manufacture of the all-ceramic post-and-core.

Description

【Technical field】 [0001] The invention relates to the field of dental restorations, in particular to a method for preparing a personalized integrated all-ceramic post and core for repairing large-area defects of teeth. 【Background technique】 [0002] Large-scale tooth defects caused by dental caries, trauma, etc. usually require post-core crown restoration to restore the shape of the affected tooth and the defective tooth tissue, and more importantly, restore the physiological function of the affected tooth. Conventional metal post-core and metal-ceramic crown restoration can not only restore the patient's function, but also take into account the aesthetics. However, with the continuous development of repair technology and the continuous improvement of people's research and understanding of repair materials, metal post cores, especially non-precious metal post cores, usually contain nickel and chromium, both of which are a kind of allergens. 10% of the population will have ...

AI Technical Summary

Problems solved by technology

[0005] However, for the preparation of integrated all-ceramic post and core in the past, the root canal diameter after root canal preparation is generally less than 2.0mm, and the depth is about 6.0-8.0mm. Due to the limitation of the accuracy of optical scanners, conventional optical scanners cannot directly Root canal shape scanning usually uses direct or indirect methods to make a resin post and core first, then scans the resin post and core, enters the data into the computer and performs three-dimensional reconstruction, and finally adopts CAD technology to make an integrated all-ceramic core by using numerical control as the center Post core

The whole process is cumbersome and affects the accuracy of the final restoration

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