3D printing false tooth ceramic material and preparation method thereof

Abstract

The invention discloses a 3D printing false tooth ceramic material and a preparation method thereof. The 3D printing false tooth ceramic material is prepared from the following components in parts bymass: 75-90 parts of porous ceramic micropowder, 9-22 parts of photocurable resin, 0.2-1.0 part of photoinitiator and 0-2.0 parts of dispersant. According to the 3D printing false tooth ceramic material, the porous ceramic micropowder is used as a substrate and is matched with the photocurable resin to prepare the 3D printing false tooth ceramic material with excellent properties; the hardness ofthe ceramic false teeth is reduced; the abrasion degree of occlusion of the teeth is reduced; the prepared 3D printing false tooth ceramic material is matched with a 3D printing device to prepare false tooth products with accurate size; a large amount of processing time is reduced; the accuracy is high; the workload of doctors is reduced, so that the working efficiency can be effectively improved;the main properties of the 3D printing false tooth ceramic material are as follows: the volume density is 2.0-2.5g / cm<3>, the normal-temperature compression strength is 100-200MPa, the Vickers hardness is 8.0-10GPa, and the bending strength is 1100-1300MPa.

Description

technical field [0001] The invention belongs to the technical field of denture ceramic materials, and in particular relates to a 3D printed denture ceramic material and a preparation method. Background technique [0002] 3D printing manufacturing technology refers to the technology of manufacturing solid parts based on the principle of layer-by-layer accumulation of discrete materials through CAD design data, which solves the forming of many complex structural parts that were difficult to manufacture in the past, and greatly reduces The processing procedure shortens the processing cycle. 3D printed dentures use laser scanning to collect three-dimensional data of dentures, and then use 3D printing technology to make dentures based on dental models, which can quickly complete the production of dentures, save a lot of time, have high accuracy, and reduce the workload of doctors. Improve work efficiency. [0003] Dentures are an important method applied to the restoration of t...

AI Technical Summary

Problems solved by technology

[0003] Dentures are an important method applied to the restoration of tooth defects. Metal and ceramics are currently the main materials for dentures. Some metal-based dentures contain heavy metal elements such as cobalt and nickel. Since nickel-chromium metal is very active, it will be released in the environment of oral saliva. Metal ions are harmful to human health and cause allergic reactions. For some metal-based dentures, they have poor wear resistance and poor chemical stability, and are increasingly unsuitable for the manufacture of dentures.

In recent years, ceramic teeth with high hardness and high wear resistance have attracted more and more people's attention, but ceramics have high hardness and high processing costs, and because the hardness of the material itself is too high, it will cause serious damage to teeth that bite too tightly. wear and tear, resulting in damage to the occlusal

[0004] Chinese patent, Publication No. CN105645840A discloses a ceramic material for 3D printing and its manufacturing method. The method is made of porous ceramic microspheres and thermoplastic resin. The ratio is between 48%-55%, the porosity is large, the pore size and porosity of porous ceramic microspheres are large, and the processing performance of thermoplastic resin is poor. Therefore, although the prepared 3D printing ceramic material has good flow performance, its hardness and processing performance Lower; Chinese patent, Publication No. CN106334215A discloses a preparation method of medical-grade 3D printing PEEK composite material, the adopted formula is: PEEK60-64 parts, PTFE10-12 parts, reinforcing fiber 16-18 parts, silicon carbide ceramic powder 6 -8 parts, 3-5 parts of magnesium oxide ceramic powder, 5-7 parts of potassium titanate whiskers, 3-6 parts of TLCP heat dissipation liquid crystal polyester, 6-10 parts of zinc oxide ceramic powder, using PEEK (polyether ether ketone ) as the main component, PEEK is also a thermoplastic resin, and the hardness and processability of the prepared PEEK composite are also low