Dental implant and method for its preparation

A dental implant and additive manufacturing technology, which is applied in the direction of prosthesis, additive manufacturing, pharmaceutical formulations, etc., can solve the problems of toxic elements, shedding, loosening of implants, etc.

Active Publication Date: 2022-01-14
ADVANCED FOR MATERIALS & EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elastic modulus of the current commercial implants is higher than that of the jawbone, forming a "stress shielding" effect, which leads to bone resorption around the implant, reduces the stability of the implant, and leads to loosening and falling off of the implant.
[0003] Dental digital technology can design implants that are more in line with oral clinical practice. Additive manufacturing technology can realize the manufacture of such implants. However, implants made of commonly used titanium alloy powder (pure Ti or Ti-6Al-4V) The bulk elastic modulus is much higher than that of the jaw bone, causing absorption around the bone, and contains toxic elements (Al and V), which become the risk of potential human diseases
In order to solve the above problems, researchers use non-toxic, biophilic elements (Ta, Nb and Zr, etc.) to replace toxic elements, and the addition of these elements can not only effectively reduce the elastic modulus of the alloy, but also has good biocompatibility and biological activity, but the existing titanium alloy dental implants still cannot take into account the problem of promoting bone tissue growth

Method used

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  • Dental implant and method for its preparation
  • Dental implant and method for its preparation
  • Dental implant and method for its preparation

Examples

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preparation example Construction

[0036] Further, in the preparation method of the present embodiment, the specific steps of melting the titanium alloy powder using a laser selection method for melt the additive manufacturing process include:

[0037] S0, the titanium alloy rib is prepared by gas atomization method or an equal centrifugation method; wherein the gas atomization method comprises: pulling the smelting chamber to evacuate, titanium alloy rod before smelt Put the induction coil, melting power 100KW, after the rod is completely melted, passed into high purity argon, purity 4n, atomized pressure 3 to 7 MPa, collect powder; the like, the concentrate rotation, the method includes: indoor access is high purity Argon, purity 4n, pressure 0.04 MPa, rotational speed 26000 rpm, and collect powder.

[0038] S1, a three-dimensional model of the teeth implant, cutting the thickness of the slice to 10-30 μm, planning the scanning path, scanned by a nine-rich manifold, and the deflection angle is 36 ° -40 ° when sca...

Embodiment 1

[0043] A dental implant is made of titanium alloy powder, wherein the titanium alloy powder is composed of elements of the following mass fraction:

[0044] 16.5% TA, 4.5% Nb, 4.2% Zr, 0.0005% O, the rest is Ti.

[0045] In this embodiment, a method of preparing a tooth implant is specifically prepared by melting the titanium alloy powder, melting a reducing material manufacturing process, forming the dental implant;

[0046] Wherein, the titanium alloy powder is composed of an element such as a mass fraction:

[0047] 16.5% TA, 4.5% Nb, 4.2% Zr, 0.0005% O, the rest is Ti.

[0048] Further, in the preparation method of the present embodiment, the fluidity ≤ 25s / 50g of the titanium alloy powder is satisfied with the laser selection melting powder requirements; and / or, the titanium alloy powder has a particle size of 10-100 μm, further , D 10 Controlled 12μm, D 50 Controlled 40μm, D 90 Controlled at 64 μm.

[0049] The titanium alloy powder in this example is combined figure 1 I...

Embodiment 2

[0063] A dental implant is made of titanium alloy powder, wherein the titanium alloy powder is composed of elements of the following mass fraction:

[0064] 15.5% TA, 3% Nb, 3% Zr, 0.0002% O, the rest is Ti.

[0065] In this embodiment, a method of preparing a tooth implant is specifically prepared by melting the titanium alloy powder, melting a reducing material manufacturing process, forming the dental implant;

[0066] Wherein, the titanium alloy powder is composed of an element such as a mass fraction:

[0067] 15.5% TA, 3% Nb, 3% Zr, 0.0002%, the rest is Ti.

[0068] Further, in the preparation method of the present embodiment, the fluidity ≤ 25s / 50g of the titanium alloy powder is satisfied with the laser selection melting powder requirements; and / or, the titanium alloy powder has a particle size of 10-100 μm, further , D 10 Control at 15μm, D 50 Controlled 43μm, D 90 Controlled at 67 μm.

[0069] Further, the step of preparing the titanium alloy powder to melt the addit...

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Abstract

The invention relates to a dental implant and a preparation method thereof. The dental implant is made of titanium alloy powder, wherein the titanium alloy powder is composed of the following elements by mass fraction: 14.5-16.5% Ta, 2.5-4.5% Nb, 2.2-4.2% Zr, 0-0.0005% O , and the rest are Ti. In the preparation method of the dental implant, the titanium alloy powder is prepared by the laser selective melting additive manufacturing process to form the dental implant; wherein, the titanium alloy powder is composed of the following elements by mass fraction: 14.5-16.5% Ta, 2.5% ~4.5% Nb, 2.2~4.2% Zr, 0~0.0005% O, and the rest is Ti. The dental implant can promote bone tissue growth while ensuring biocompatibility.

Description

Technical field [0001] The present invention relates to the field of oral implants, and more particularly to a dental implant and a preparation method thereof. Background technique [0002] Planting dentures is the preferred treatment plan for the current dentition defect. It is a treatment with a dental implant, and repairs a treatment of the upper crown. The comfort is high, the chewing recovery is high and does not damage the neighbor. However, the commercial implant is currently a "stress occlusion" effect due to the material elastic modulus than the maxillary bone, resulting in bone absorption of the implant, reducing the stability of implant, resulting in loose and falling off. [0003] Oral digital technology, can design more in line with oral clinical implants, and the addition of the manufacturing technology can realize the manufacture of such an implant entity, and currently useful titanium alloy powder (pure Ti or Ti-6Al-4V) planting The body elastic modulus is much hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/06A61L27/50A61L27/54B22F3/105B33Y10/00B33Y70/00B33Y80/00C22C14/00
CPCA61L27/06A61L27/50A61L27/54C22C14/00B33Y10/00B33Y70/00B33Y80/00A61L2400/18A61L2300/102A61L2300/42A61L2430/12B22F10/00B22F10/28Y02P10/25
Inventor 吴振寰戴煜李礼寻德华谢晓莉谭兴龙王艳艳
Owner ADVANCED FOR MATERIALS & EQUIP
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