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Printable and sinterable dental compositions for producing parts of dental prostheses and method for producing same

A composition, dental technology, applied in the direction of additive processing of mixtures of solid materials and liquid materials, dentistry, dental prostheses, etc., can solve the problems of expensive, consumption, large materials, etc., to achieve the effect of promoting cracks

Inactive Publication Date: 2017-02-22
HERAEUS KULZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The known method has the disadvantage of consuming a large amount of material
Also, for milling, very expensive 3-5 axis milling machines need to be procured

Method used

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  • Printable and sinterable dental compositions for producing parts of dental prostheses and method for producing same
  • Printable and sinterable dental compositions for producing parts of dental prostheses and method for producing same
  • Printable and sinterable dental compositions for producing parts of dental prostheses and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0121] Ink: An ink is prepared by mixing components (i), (ii) and (iii) with each other, the total amounting to 100% by weight. To prepare homogeneous dispersions, the samples were post-treated in an ultrasonic bath.

[0122] (i) filler in ink:

[0123] a) with 3mol-% Y 2 o 3 Stabilized zirconium dioxide; 15 wt.-% (Example 1)

Embodiment 8

[0131] Particle size: a) about 0.7μm, d 90 = 1.3 μm, d 99 <1.9μm

[0132] b) to f)d 50 Less than or equal to 500nm, d 90 Less than or equal to 1.0μm

[0133] g)d 50 =560nm,d 90 Less than or equal to 1.0μm

[0134] a) to g) sample viscosity 40-15mPas

[0135] (ii) Liquid components:

[0136] Water: 20-55wt.-%

[0137] Ethanol: 10-30wt.-%

[0138] Ethylene glycol: 5-40wt.-%

[0139] (iii) Excipient dispersant / liquefaction agent: 0.2 wt.-% Dolapix CE 64.

Embodiment 9 and 10

[0141] Table 1a: Ink composition

[0142]

[0143] Table 1b: Ink composition

[0144]

[0145] 1 Particle size distribution is the same as embodiment 1-8

[0146] Ink and droplets exhibit sufficient stability during printing ( Figure 1a and b; droplet settings: voltage / pulse intensity 58 / 28, frequency 500 Hz after about 5 minutes, droplet size about 48 μm). Dental ceramic fillers in ink (powdered components): d 50 =4.6μm,d 100 = 17 μm.

[0147] Table 2: Dental inks and fillers in powder beds, by weight percent (composition material SiO 2 Raw materials: A3, A2, A1)

[0148]

[0149] Powder bed (table 3): with 3mol-%Y 2 o 3 Stabilized Flowable Dental Ceramic Powder Zirconia

[0150] Table 3: Powder Bed Samples 1 and 2 Dental Ceramic Powders - Zirconia

[0151] sample 1 2 – silanized composition ZrO 2 ,3mol-%Y 2 o 3

ZrO 2 ,3mol-%Y 2 o 3

d 50

0.7μm 0.7μm Bulk density: [g / cm 3 ]

3.61 3.33 Angle of ...

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Abstract

The subject matter of the invention is a dental composition consisting of a pourable ceramic powder of a powder component, comprising at least one dental glass, glass ceramic, metal oxide, or mixed oxide selected from metal oxides, and / or a mixture comprising at least two of said components, as well as a printing dental ink, and a method for manufacturing dental prosthesis shaped bodies.

Description

technical field [0001] The subject of the present invention is a dental composition of a flowable ceramic powder of a pulverulent component comprising at least one dental glass, glass Ceramics, metal oxides, mixed oxides selected from metal oxides and / or mixtures comprising at least two of the stated components. Background technique [0002] It is customary to produce dental ceramic restorations from so-called blanks using subtractive procedures. For this purpose, prosthetic prostheses such as braces, crowns and bridges are milled from overlays and sintered using a method with a specific firing profile. The known method has the disadvantage of consuming a large amount of material. Also, for milling, very expensive 3-5 axis milling machines need to be procured. For this reason, central milling centers have been established which process orders from dental technicians and return milled prosthetic components to the dental technician. [0003] For the above reasons, there is...

Claims

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Application Information

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IPC IPC(8): A61K6/00A61K6/02A61K6/027B29C67/00
CPCB29L2031/7536A61K6/17A61K6/818A61K6/836A61K6/833B33Y70/10B29C64/112B29C64/165A61K6/887B33Y10/00B33Y80/00A61C13/0019A61C13/0022A61C13/083B28B1/001B28B11/243
Inventor 乌维·博姆马里奥·拜尔伊温妮·齐格勒尤尔根·施泰德尔
Owner HERAEUS KULZER
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