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Preparation method of titanium powder for 3D-printed dental crown and 3D-printed dental crown

A 3D printing, titanium powder technology, used in dentistry, filling teeth, dental prosthetics and other directions, can solve the problems of crown casting tissue defects, poor crown quality, affecting service life and other problems, achieve smooth surface, good fluidity, Uniform particle size effect

Inactive Publication Date: 2016-10-12
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The crowns cast by molds are prone to casting defects, resulting in poor quality of the crowns and affecting the service life

Method used

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  • Preparation method of titanium powder for 3D-printed dental crown and 3D-printed dental crown
  • Preparation method of titanium powder for 3D-printed dental crown and 3D-printed dental crown
  • Preparation method of titanium powder for 3D-printed dental crown and 3D-printed dental crown

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The titanium powder used to prepare the 3D printing crown provided by this embodiment, its preparation steps are as follows figure 1 As shown, the details are as follows:

[0030] Incoming material inspection: check the titanium content and impurity content of raw titanium;

[0031] Processing: making raw titanium into titanium rods with a diameter of 50mm and a length of 550mm;

[0032] Cleaning: Clean the titanium rod with cleaning solution to remove the oil and oxide layer on the surface;

[0033] Drying: Dry the cleaned titanium rods to remove moisture;

[0034] Atomized powder: use the atomization method to make titanium powder from the dried titanium rod;

[0035] Powder mixing: mix the prepared titanium powder evenly;

[0036] Powder sieving: pass the uniformly mixed titanium powder through 65 mesh and 270 mesh sieves in turn, and select the titanium powder that has passed through 270 mesh sieves;

[0037] Packing: Label and pack the titanium powder passed t...

Embodiment 2

[0062] This embodiment adopts the same steps as in embodiment 1 to prepare titanium powder. The difference from Example 1 is that the concentration of the cleaning solution used is 7%, the cleaning time is 30min, the drying temperature is 85°C, the drying time is 1.5h, the atomization pressure is 30bar, and the feed rate is 1500mm / h, melting power is 15kW.

[0063] The packaged titanium powder was inspected by laser particle size analyzer, scanning electron microscope (SEM) and oxygen, nitrogen and hydrogen analyzer (ONH analyzer). image 3 , see Table 4 for chemical composition.

Embodiment 3

[0065] The titanium powders prepared in Example 1 and Example 2 were used to prepare 3D printed crowns respectively.

[0066] During 3D printing, the prepared titanium powder can be spread into a thin layer, which will not block the powder supply system of the 3D printing equipment. The prepared crown will not produce dents, splashes and holes when the solution jet impacts.

[0067] The prepared dental crown has a smooth surface, elegant appearance, and good biocompatibility, and is an excellent dental crown.

[0068] The particle size of the titanium powder that table 1 embodiment 1 makes

[0069]

[0070] The chemical composition (wt%) of the titanium powder that table 2 embodiment 1 makes

[0071] element

Content requirements

Measured content

Ti

margin

margin

Fe

≤0.3％

0.032％

C

≤0.08％

0.014％

O

≤1300PPM

925PPM

N

≤300PPM

167PPM

[0072] The particle size of the titanium powder that ...

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Abstract

The invention discloses a preparation method of titanium powder for a 3D-printed dental crown and the 3D-printed dental crown. The titanium content of the titanium powder which is prepared through the method and used for the 3D-printed dental crown is higher than or equal to 99.7 wt%. The preparation method comprises the steps that a titanium raw material is prepared into titanium rods with the diameter of 40 mm to 60 mm and the length of 500 mm to 600 mm; the titanium rods are cleaned with cleaning liquid, and oil stains and an oxide layer on the surfaces of the titanium rods are removed; the cleaned titanium rods are dried to remove water; the dried titanium rods are prepared into the titanium powder through an atomization method; the prepared titanium powder is screened with a 65-mesh screen and a 270-mesh screen sequentially, and the titanium powder passing through the 270-mesh screen is selected. The titanium powder prepared through the method is small in particle, uniform in particle size, spherical and good in liquidity, and the 3D-printed dental crown prepared from the titanium powder is smooth in surface, attractive, elegant and good in biocompatibility and is a good dental crown.

Description

technical field [0001] The invention belongs to the field of 3D printed dental crowns, and in particular relates to a preparation method of titanium powder for 3D printed dental crowns and a 3D printed dental crown. Background technique [0002] Crowns, also called braces, are used to restore teeth. According to different materials, dental crowns can be divided into all-metal crowns, metal-ceramic crowns, gold-deposited porcelain crowns, and all-ceramic crowns. Among them, the all-metal crown is relatively strong, has less molars, and does not have problems such as chipping. Due to its unsightly color, it is mainly used for the posterior teeth that are not easy to be exposed, especially the maxillary posterior teeth. Porcelain-fused-to-metal crowns become metal-ceramic crowns on metal-based crowns, which solves the unsightly problem of metal exposure. Metal-ceramic crowns are mainly used in the anterior teeth and premolar areas, but the amount of molars increases, and there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/00B33Y70/00B33Y80/00A61C5/10
CPCB22F9/082B22F1/0003B22F2009/0824B33Y70/00B33Y80/00
Inventor 周德敬仲召军李龙
Owner YINBANG CLAD MATERIAL