Method for adhering and combining zirconia prosthesis and natural tooth

A technology of zirconia and restorations, which is applied in the field of bonding and bonding of zirconia restorations and natural teeth to achieve the effect of improving the bonding performance

Active Publication Date: 2018-10-16
HANGZHOU ERRAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that none of the existing physical and chemical meth

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  • Method for adhering and combining zirconia prosthesis and natural tooth
  • Method for adhering and combining zirconia prosthesis and natural tooth
  • Method for adhering and combining zirconia prosthesis and natural tooth

Examples

Experimental program
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Example Embodiment

[0073] 2. Preparation of forming and coating materials:

[0074] 2.1 Suspension slurry of zirconia

[0075] Add the zirconium hydroxide suspension with a concentration of 0.5-1mol / L to the reactor, and then add yttrium oxide to the reactor in 3-5 times, and heat the reactor to 40-60℃ and keep it warm for 2-3 When the added yttrium oxide is completely dissolved, add 0.5-1% of the weight of the zirconium hydroxide as a dispersant polyethylene glycol, then heat to 200-250°C and keep it for 55-65 hours for hydrothermal-hydrolysis reaction. Keep the internal pressure of the reactor at 2-3MPa to make it gradually hydrolyze and precipitate; quickly separate it with a centrifuge, vacuum filter the precipitate, wash with distilled water, ethanol, and dry to obtain a stable oxidation of yttrium with a yttrium content of 2-6mol% Zirconium precursor; the yttrium partially stabilized zirconia precursor is mixed with polyethylene glycol, a dispersant that accounts for 1-3% by weight of the yttr...

Example Embodiment

[0087] Example 1

[0088] The restoration type is veneer restoration 1 (such as figure 2 ), the area is larger, the whole is thicker, and the edges are thicker. The bonding surface is required to cover the mesh and the mesh depth is deepened.

[0089] Step 1. All mesh processing requires high edge strength. Using partially sintered zirconia ceramic blanks can reduce the risk of edge cracking, and prepare partially sintered zirconia ceramic blanks with a diameter of 20mm and a height of 20mm.

[0090] Step 2. Use NX10.0 for processing programming, set the grid tool path to a horizontal line, the grid depth is 0.05mm, the grid spacing is 0.98mm, and the grid range covers the entire bonding surface, such as image 3 , 4 . The tool is a 1mm carbide-coated ball-end milling cutter, the spindle speed is 12000rpm, the milling feed is 600mmpm, and the machining program is generated. The micro-texture shape that can be processed in the present invention can also be as Picture 9 Shown.

[00...

Example Embodiment

[0099] Example 2

[0100] The restoration type is a veneer restoration, which has a larger area, thinner overall, and thinner edges. It is required that only part of the mesh is made on the bonding surface to protect the edges, and the depth of the mesh should not be too deep.

[0101] Step 1. Prepare unsintered zirconia ceramic blanks with length, width and height of 40×17×20mm;

[0102] Step 2. Use SUM3D for processing programming, set the grid tool path to be vertical staggered, the grid depth is 0.03mm, the grid spacing is 0.3mm, and the grid range is 2mm from the edge, such as Figure 5 . The tool is a 0.6mm carbide ball-end milling cutter, the spindle speed is 15000rpm, and the milling feed is 1000mmpm to generate the processing program.

[0103] Step 3. Import the processing program into the three-axis CNC machine tool to process the zirconia ceramic green body. During the processing, the zirconium powder that is cut and peeled is continuously blown with compressed air until t...

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Abstract

The invention discloses a method for adhering and combining a zirconia prosthesis and a natural tooth. The method has the advantages that an existing sand blast process for processing is not used, thesurface of dental-department zirconia ceramic is milled, material mechanical damage is avoided, micro-ornamentation is formed on the surface of the dental-department zirconia ceramic to perform surface roughening under the condition that the later mechanical strength of the ceramic is unaffected so as to increase the specific surface area of the zirconia ceramic, and the zirconia prosthesis and the natural tooth are adhered and combined by using resin as the adhesive through methods such as surface processing, coating and novel sand blast.

Description

technical field [0001] The invention relates to the technical field of making dental ceramic materials, in particular to a method for bonding and combining zirconia restorations with natural teeth. Background technique [0002] At present, there are many kinds of dental restoration ceramics used in clinic, mainly including alumina-based ceramics, glass-based ceramics and zirconia-based ceramics. Due to the different main components of each material, its physical and chemical properties are also different. Among them, zirconia stands out among many dental all-ceramic materials due to its excellent mechanical properties, which greatly broadens the indications of all-ceramic restorations. Similar to other types of all-ceramic materials, resin-based adhesives are preferred as cements when zirconia ceramics are used. However, due to the dense and smooth surface of zirconia ceramics, high chemical inertness and high hardness, its bonding performance with resin is poor. And when ...

Claims

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Application Information

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IPC IPC(8): C04B41/89C04B35/48C04B35/622C04B35/64B24C3/32A61K6/02B28B11/08
CPCA61K6/818B24C3/32B28B11/0836C04B35/48C04B35/622C04B35/64C04B41/009C04B41/52C04B41/89C04B2235/612C04B2235/616C04B2235/661C04B41/5042C04B41/5031C04B41/522C04B41/45
Inventor 沈志坚李廷凯赵武元刘文广
Owner HANGZHOU ERRAN TECH
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