Novel titanium-tantalum alloy dental implant material as well as preparation method and application thereof

Abstract

The invention provides a novel titanium-tantalum alloy dental implant material and a preparation method and application thereof.The preparation method comprises the following steps that S1, titanium-tantalum alloy powder is prepared and comprises, by mass, 30%-50% of Ta and the balance Ti for standby application; s2, a dental implant three-dimensional model is established, selective laser melting is used for preparing the titanium-tantalum alloy powder in the S1 to obtain a target, the 3D printing laser power is 200-350 W, the scanning speed is 600-800 mm / s, the layer thickness is 20-40 microns, and the dental implant is obtained for standby application; and S3, carrying out plasma surface treatment on the dental implant obtained in the S2 at the power of 100-300W for 10-20 minutes to obtain the novel titanium-tantalum alloy dental implant material. The obtained novel titanium-tantalum alloy dental implant material has low elastic modulus, excellent mechanical property and biocompatibility, can promote cell proliferation, remarkably improves the biomechanical property of the implant, has durability and stress barrier effect relief, and is particularly suitable for high-requirement clinical scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of biomedical materials, and particularly relates to a novel titanium tantalum alloy dental implant material, a preparation method thereof, and an application thereof. Background Art

[0002] Tooth defect is a common disease in the field of stomatology, and implant denture restoration is the best treatment method for solving tooth defect. A dental implant structurally includes a body part, a neck part, and a abutment part. The body part is the part of the implant denture implanted into human tissues, generally implanted into the mucoperiosteum or soft tissues. The neck part is used to connect the body part and the abutment part, and the abutment part is the part of the dental implant exposed outside the mucosa. Currently, the commonly used materials for dental implants are mainly pure titanium and titanium alloys, bioactive ceramics, and some composite materials with low specific gravity, high strength, non-magnetic property, small shrinkage, and high yield strength and fatigue strength, and having good corrosion resistance, biocompatibility, and mechanical properties. Since the passivation oxide film on the surface of titanium has non-metallic characteristics, it can form a bone-bonding interface with living bone tissue, thereby better resisting the compressive stress during chewing and ensuring the long-term retention of the implant in the bone tissue. After adding alloy elements, the corrosion resistance and workability of the material can be further improved, and the elastic modulus can be reduced, which is particularly beneficial to the preparation of small-diameter implants and can reduce their fracture risk, making them the preferred materials for dental implants.

[0003] However, the oxide passivation film on the surface of titanium or titanium alloy has biological inertness, resulting in insufficient compatibility with recipient tissues, low bone-bonding efficiency, limited bite force that can be borne, and inability to complete the chewing function well. When the bite force is too large, it may cause alveolar bone resorption, implant loosening or even falling off, which may directly lead to the failure of implantation. In order to increase the biocompatibility between the dental implant and the alveolar bone, it is necessary to perform surface roughening treatment on the dental implant to increase the surface area of the part of the dental implant implanted into the bone tissue. After treatment, the bonding strength between the dental implant and the alveolar bone tissue is higher, which is beneficial to accelerating the growth and bonding speed between the alveolar bone and the dental implant.

[0004] Chinese Patent CN104400660B "Application of Titanium Alloy as a Sandblasting Medium for Dental Implants" discloses an application of titanium alloy as a sandblasting medium for dental implants. By using the same material as the titanium alloy dental implant as the sandblasting material, it is possible to prevent contamination of the implant by different elemental impurities. However, when performing surface treatment by physical sandblasting, some particles may be strongly attached. Even if they are titanium alloy particles of the same material, they will affect the bonding effect between the dental implant and the alveolar bone. Chemical surface treatment generally produces relatively regular honeycomb-shaped holes. If the treatment is excessive, although the surface area will be increased, the surface structure may also become relatively loose, thus affecting the bonding effect between the dental implant and the alveolar bone.

[0005] The Korean patent KR1020230100838A, "Dental abutment manufacturing system using 3D printing", discloses a preparation method for dental implant abutments by 3D printing - plasma surface treatment of titanium alloy (Ti - 6Al - 4V) powder. However, the patent does not specifically disclose its preparation parameters and performance, making it impossible to evaluate the advantages and disadvantages of the dental implants. On the other hand, the elastic modulus of pure titanium and Ti - 6Al - 4V titanium alloy materials (110 - 114 GPa) is much higher than that of bone tissue (cancellous bone is about 4 - 7 GPa, cortical bone is about 13 - 17 GPa), which easily causes the stress shielding effect, leading to bone resorption around the implant and osteoporosis symptoms, thus becoming an inducement for fractures.

[0006] Therefore, it is of great significance to develop a new type of titanium - tantalum alloy dental implant material with excellent biological properties, good bonding effect with alveolar bone, and low elastic modulus, as well as its preparation method and application. Summary of the Invention

[0007] In view of the problems existing in the existing dental implant materials, such as the low bonding strength between dental implants and alveolar bone tissue, general biological properties, and high elastic modulus that easily cause the stress shielding effect, the present invention provides a new type of titanium - tantalum alloy dental implant material, its preparation method and application. By selecting titanium - tantalum alloy (Ti - xTa, x = 30 - 50 wt%) as the main material and using selective laser melting 3D printing combined with plasma surface treatment, the corrosion resistance and bone bonding ability of the material are improved, its biological properties are enhanced, and the precise manufacturing of personalized implants is achieved. The obtained new type of titanium - tantalum alloy dental implant material has a low elastic modulus, excellent mechanical properties and biocompatibility, can effectively reduce the stress shielding effect, and is particularly suitable for high - requirement clinical scenarios such as immediate implantation and aesthetic restoration.

[0008] To achieve the above - mentioned purpose, the technical solution adopted by the present invention is:

[0009] A preparation method for a new type of titanium - tantalum alloy dental implant material, comprising the following steps:

[0010] S1. Prepare titanium - tantalum alloy powder, which includes the following elemental components by mass percentage: Ta: 30 - 50%, and the balance is Ti, for later use;

[0011] S2. Establish a three - dimensional model of a dental implant, and use selective laser melting to prepare the target from the titanium - tantalum alloy powder described in S1. The 3D printing laser power is 200 - 350 W, the scanning speed is 600 - 800 mm / s, and the layer thickness is 20 - 40 μm to obtain a dental implant, for later use;

[0012] S3. Perform plasma surface treatment on the dental implant obtained in S2, with a power of 100 - 300 W and a time of 10 - 20 min, thus obtaining the novel titanium-tantalum alloy dental implant material.

[0013] Further, the titanium-tantalum alloy powder in S1 is prepared by gas atomization.

[0014] Further, the particle size of the titanium-tantalum alloy powder in S1 is 45 - 100 μm.

[0015] Further, the 3D printing laser power in S2 is 300 W, the scanning speed is 700 mm / s, and the layer thickness is 30 μm.

[0016] The present invention preferably uses a 3D printing laser power of 300 W, a scanning speed of 700 mm / s, and a layer thickness of 30 μm to ensure that the titanium-tantalum alloy powder can be fully melted, and the obtained material has a uniform and dense composition, without problems of internal residual pores and unmelted metal particles.

[0017] Further, for the plasma surface treatment in S3, the power is 200 W and the time is 15 min.

[0018] The present invention preferably performs plasma surface treatment with a power of 200 W and a time of 15 min, so that the surface roughness of the novel titanium-tantalum alloy dental implant material of the present invention is within the optimal range, and it has excellent corrosion resistance and bone-bonding properties.

[0019] Another object of the present invention is to provide a novel titanium-tantalum alloy dental implant material.

[0020] A novel titanium-tantalum alloy dental implant material is prepared by the preparation method of the novel titanium-tantalum alloy dental implant material described in any one of the foregoing.

[0021] Further, the novel titanium-tantalum alloy dental implant material includes a bionic trabecular porous structure.

[0022] Furthermore, the porosity of the bionic trabecular porous structure is 45 - 65%.

[0023] Another object of the present invention is to provide an application of the novel titanium-tantalum alloy dental implant material.

[0024] An application of the novel titanium-tantalum alloy dental implant material described in any one of the foregoing in the field of biomedical materials.

[0025] Further, it is used in the field of dental implant surgery.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] This application selects a titanium tantalum alloy (Ti-xTa, x = 30 - 50 wt%) as the main material. By reasonably controlling the tantalum element content, the mechanical properties of the alloy material are improved, while avoiding excessive tantalum element content that would increase the elastic modulus of the material and cause the stress shielding effect. The selection of 30 - 50 wt% tantalum element content significantly improves the biomechanical properties of the implant, taking into account the durability of the implant and reducing the stress shielding effect. This application uses selective laser melting 3D printing combined with plasma surface treatment, which has high printing quality, good formability, no defects in the product, uniform distribution of alloy elements, and can achieve precise manufacturing of personalized implants. While ensuring that the new titanium tantalum alloy dental implant material still has excellent corrosion resistance, it improves the bone-bonding ability of the material, enhances its biological properties, makes the bonding strength between the dental implant and the alveolar bone tissue higher, and is conducive to accelerating the growth and bonding speed of the alveolar bone and the dental implant. The obtained new titanium tantalum alloy dental implant material has a low elastic modulus, excellent mechanical properties and biocompatibility, can effectively reduce the stress shielding effect, achieve minimally invasive surgery and long-term stability of the implant, and is particularly suitable for high-demand clinical scenarios such as immediate implantation and aesthetic restoration. Detailed implementation mode

[0028] To better illustrate the purpose, technical solution and advantages of the present invention, the present invention is further illustrated by the following embodiments. Obviously, the following embodiments are only a part of the embodiments of the present invention, rather than all embodiments; it should be understood that the embodiments of the present invention are only used to illustrate the technical effects of the present invention, rather than to limit the protection scope of the present invention.

[0029] The raw materials in the embodiments can all be obtained commercially; unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the technical field.

[0030] The present invention will be specifically described below through embodiments, and these embodiments do not mean any limitation to the present invention. Those skilled in the art should understand that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. The experimental methods without specific conditions noted in the following embodiments are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers. The following embodiments are mainly for better understanding the analysis method of the present invention and do not exhaust all operation modes.

[0031] Example 1

[0032] A preparation method of a new titanium tantalum alloy dental implant material, comprising the following steps:

[0033] S1. First, prepare titanium tantalum alloy powder by gas atomization method, including the following elemental components by mass percentage: Ta: 40%, the balance is Ti, with a particle size of 45 - 100 μm, for use;

[0034] S2. Establish a three-dimensional model of the dental implant, reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm), and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the tantalum-titanium alloy powder described in S1. The 3D printing laser power is 300 W, the scanning speed is 700 mm / s, and the layer thickness is 30 μm to obtain the dental implant for later use;

[0035] S3. Perform plasma surface treatment on the dental implant obtained in S2 with a power of 200 W for 15 minutes to obtain the novel tantalum-titanium alloy dental implant material.

[0036] Example 2

[0037] A preparation method of a novel tantalum-titanium alloy dental implant material, comprising the following steps:

[0038] S1. First, prepare tantalum-titanium alloy powder by gas atomization method, including the following elemental components by mass percentage: Ta: 30%, the balance is Ti, the particle size is 45 - 100 μm, for later use;

[0039] S2. Establish a three-dimensional model of the dental implant, reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm), and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the tantalum-titanium alloy powder described in S1. The 3D printing laser power is 300 W, the scanning speed is 700 mm / s, and the layer thickness is 30 μm to obtain the dental implant for later use;

[0040] S3. Perform plasma surface treatment on the dental implant obtained in S2 with a power of 200 W for 15 minutes to obtain the novel tantalum-titanium alloy dental implant material.

[0041] Compared with Example 1, the main difference in this example is that the Ta content in the tantalum-titanium alloy in step S1 is 30%.

[0042] Example 3

[0043] A preparation method of a novel tantalum-titanium alloy dental implant material, comprising the following steps:

[0044] S1. First, prepare tantalum-titanium alloy powder by gas atomization. The elemental composition by mass percentage includes the following: Ta: 50%, the balance is Ti, with a particle size of 45 - 100 μm, for later use;

[0045] S2. Establish a three-dimensional model of the dental implant. Reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm), and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the tantalum-titanium alloy powder described in S1. The 3D printing laser power is 300 W, the scanning speed is 700 mm / s, and the layer thickness is 30 μm to obtain the dental implant, for later use;

[0046] S3. Perform plasma surface treatment on the dental implant obtained in S2 with a power of 200 W and a time of 15 min to obtain the novel tantalum-titanium alloy dental implant material.

[0047] Compared with Example 1, the main difference in this example is that the Ta content in the tantalum-titanium alloy in step S1 is 50%.

[0048] Example 4

[0049] A preparation method of a novel tantalum-titanium alloy dental implant material, comprising the following steps:

[0050] S1. First, prepare tantalum-titanium alloy powder by gas atomization. The elemental composition by mass percentage includes the following: Ta: 40%, the balance is Ti, with a particle size of 45 - 100 μm, for later use;

[0051] S2. Establish a three-dimensional model of the dental implant. Reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm), and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the tantalum-titanium alloy powder described in S1. The 3D printing laser power is 200 W, the scanning speed is 650 mm / s, and the layer thickness is 30 μm to obtain the dental implant, for later use;

[0052] S3. Perform plasma surface treatment on the dental implant obtained in S2 with a power of 200 W and a time of 15 min to obtain the novel tantalum-titanium alloy dental implant material.

[0053] Example 5

[0054] A preparation method of a novel titanium-tantalum alloy dental implant material, comprising the following steps:

[0055] S1. First, prepare titanium-tantalum alloy powder by gas atomization method, including the following elemental components by mass percentage: Ta: 40%, the balance is Ti, the particle size is 45 - 100 μm, for later use;

[0056] S2. Establish a three-dimensional model of the dental implant, reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm) and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the titanium-tantalum alloy powder described in S1. The 3D printing laser power is 350 W, the scanning speed is 750 mm / s, and the layer thickness is 30 μm to obtain the dental implant, for later use;

[0057] S3. Perform plasma surface treatment on the dental implant obtained in S2, with a power of 200 W and a time of 15 min, to obtain the novel titanium-tantalum alloy dental implant material.

[0058] Example 6

[0059] A preparation method of a novel titanium-tantalum alloy dental implant material, comprising the following steps:

[0060] S1. First, prepare titanium-tantalum alloy powder by gas atomization method, including the following elemental components by mass percentage: Ta: 40%, the balance is Ti, the particle size is 45 - 100 μm, for later use;

[0061] S2. Establish a three-dimensional model of the dental implant, reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm) and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the titanium-tantalum alloy powder described in S1. The 3D printing laser power is 300 W, the scanning speed is 700 mm / s, and the layer thickness is 30 μm to obtain the dental implant, for later use;

[0062] S3. Perform plasma surface treatment on the dental implant obtained in S2, with a power of 120 W and a time of 20 min, to obtain the novel titanium-tantalum alloy dental implant material.

[0063] Example 7

[0064] A preparation method of a novel titanium-tantalum alloy dental implant material, comprising the following steps:

[0065] S1. First, prepare titanium tantalum alloy powder by gas atomization method. The elemental composition by mass percentage includes the following: Ta: 40%, the balance is Ti, with a particle size of 45 - 100 μm, for later use.

[0066] S2. Establish a three-dimensional model of the dental implant, reconstruct the shape of the extraction socket based on CBCT data, design a matching implant shape, add an internal connection structure (hexagonal depth 3 mm, Morse taper, platform transfer), a central screw channel (diameter 2.5 mm), and an optional smooth neck area (height 1.5 mm), including a bionic trabecular porous structure with a porosity of 50%. Use selective laser melting to prepare the target from the titanium tantalum alloy powder described in S1. The 3D printing laser power is 300 W, the scanning speed is 700 mm / s, and the layer thickness is 30 μm to obtain a dental implant, for later use.

[0067] S3. Perform plasma surface treatment on the dental implant obtained in S2 with a power of 250 W for 10 min to obtain the novel titanium tantalum alloy dental implant material.

[0068] Comparative Example 1

[0069] A preparation method of a novel titanium tantalum alloy dental implant material. The steps not specifically described are the same as those in Example 1, except that:

[0070] Compared with Example 1, in step S1 of this comparative example, Ti-6Al-4V alloy powder is used.

[0071] Comparative Example 2

[0072] A preparation method of a novel titanium tantalum alloy dental implant material. The steps not specifically described are the same as those in Example 1, except that:

[0073] Compared with Example 1, in step S1 of this comparative example, pure titanium powder is used.

[0074] Comparative Example 3

[0075] A preparation method of a novel titanium tantalum alloy dental implant material. The steps not specifically described are the same as those in Example 1, except that:

[0076] Compared with Example 1, in step S1 of this comparative example, the Ta content in the titanium tantalum alloy is 20%.

[0077] Comparative Example 4

[0078] A preparation method of a novel titanium tantalum alloy dental implant material. The steps not specifically described are the same as those in Example 1, except that:

[0079] Compared with Example 1, the Ta content in the titanium tantalum alloy in step S1 of this comparative example is 60%.

[0080] Comparative Example 5

[0081] A preparation method of a novel titanium tantalum alloy dental implant material, the steps not specifically described are the same as those in Example 1, and the differences are as follows:

[0082] Compared with Example 1, the laser power in step S2 of this comparative example is 400 W.

[0083] Comparative Example 6

[0084] A preparation method of a novel titanium tantalum alloy dental implant material, the steps not specifically described are the same as those in Example 1, and the differences are as follows:

[0085] Compared with Example 1, the laser power in step S2 of this comparative example is 150 W.

[0086] Comparative Example 7

[0087] A preparation method of a novel titanium tantalum alloy dental implant material, the steps not specifically described are the same as those in Example 1, and the differences are as follows:

[0088] Compared with Example 1, the power in step S3 of this comparative example is 80 W.

[0089] Comparative Example 8

[0090] A preparation method of a novel titanium tantalum alloy dental implant material, the steps not specifically described are the same as those in Example 1, and the differences are as follows:

[0091] Compared with Example 1, the power in step S3 of this comparative example is 350 W.

[0092] Performance tests were carried out on the examples and comparative examples, and the specific test methods are as follows:

[0093] Referring to national standards such as "GB / T 228.1", "GB / T 40299-2021", and "GB / T 16886", the mechanical properties, corrosion resistance, and biological properties of Examples 1-7 and Comparative Examples 1-8 were measured. The specific results are as follows:

[0094] Table 1 Test data of novel titanium tantalum alloy dental implant materials in Examples 1-7 and Comparative Examples 1-8

[0095]

[0096] As can be seen from the above table, the elastic modulus of each embodiment of the present invention is lower than 85 GPa, the compressive strength is higher than 1000 MPa, the tensile strength is higher than 900 MPa, the elongation is higher than 15%, the fatigue strength > 600 MPa (100 cycles), and the self-corrosion current density can reach as low as 5.089×10 -8 A / cm 2 , having a low elastic modulus, excellent mechanical properties and corrosion resistance. For Comparative Example 1 and Comparative Example 2, titanium alloy powder and pure titanium powder are used, with a high elastic modulus, and the corrosion resistance decreases significantly after plasma surface treatment, and the self-corrosion current density is large; in Comparative Example 3, the tantalum element content is low. Although the elastic modulus is low, the mechanical properties are also poor and cannot be compared with each embodiment; in Comparative Example 4, the tantalum element content is too high, resulting in agglomeration, causing stress concentration, and severely reducing the plasticity of the material and the elongation; in Comparative Example 5, the laser power is too high, resulting in ablation and volatilization of some alloy powders, causing defects such as pores inside the material, leading to a decrease in mechanical properties; in Comparative Example 6, due to the low laser power, the alloy powders cannot be fully melted, resulting in defects of unmelted metal particles inside the material, and the mechanical properties are also low; in Comparative Example 8, the plasma surface treatment power is relatively high, the surface roughness of the material is high, and the corrosion resistance is poor.

[0097] Table 2 Biological data of the novel titanium-tantalum alloy dental implant materials of Examples 1-7 and Comparative Examples 1-8

[0098]

[0099]

[0100] As can be seen from the above table, the in vitro cell experiments of each embodiment of the present invention show excellent osteoblast compatibility, and the cell proliferation rate is significantly higher than that of Ti-6Al-4V; the animal experiments show that the bone integration area ratio exceeds 70%, the soft tissue primary healing rate exceeds 98%, and the extraction force at 12 weeks exceeds 120 N (rat femoral end). For Comparative Example 1 and Comparative Example 2, titanium alloy powder and pure titanium powder are used, with poor biocompatibility, and the extraction force at 12 weeks does not exceed 90 N; in Comparative Example 7, the plasma surface treatment power is low, the bone bonding force is weak, the extraction force at 12 weeks does not exceed 70 N, and the bite force that can be borne is limited, and the chewing function cannot be well completed.

[0101] In summary, by selecting titanium tantalum alloy (Ti-xTa, x = 30-50 wt%) as the main material, the present invention significantly improves the biomechanical properties of the implant, taking into account the durability of the implant and reducing the stress shielding effect. By means of selective laser melting 3D printing combined with plasma surface treatment, the printing quality is high, the formability is good, the product has no defects, the alloy element distribution is uniform, and the precise manufacturing of personalized implants can be realized. While ensuring that the new titanium tantalum alloy dental implant material still has excellent corrosion resistance, it improves the bone-bonding ability of the material, enhances its biological properties, makes the bonding strength between the dental implant and the alveolar bone tissue higher, and is conducive to accelerating the growth and bonding speed of the alveolar bone and the dental implant. The obtained new titanium tantalum alloy dental implant material has a low elastic modulus, excellent mechanical properties and biocompatibility, can effectively reduce the stress shielding effect, realize minimally invasive surgery and the long-term stability of the implant, and is particularly suitable for high-demand clinical scenarios such as immediate implantation and aesthetic restoration.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for preparing a novel titanium-tantalum alloy dental implant material, characterized in that: The following steps are involved: S1. Prepare titanium-tantalum alloy powder, comprising the following elemental components by mass percentage: Ta: 30-50%, the balance is Ti, for standby; S2. Establish a three-dimensional model of a dental implant, use selective laser melting to prepare the titanium-tantalum alloy powder described in S1 to obtain a target, the 3D printing laser power is 200-350W, the scanning speed is 600-800mm / s, the layer thickness is 20-40μm, and a dental implant is obtained for standby use; S3. The dental implant obtained in S2 is subjected to plasma surface treatment at a power of 100-300 W for a time of 10-20 min to obtain the novel titanium-tantalum alloy dental implant material.

2. A method for preparing the novel titanium-tantalum alloy dental implant material according to claim 1, characterized in that: The titanium-tantalum alloy powder described in S1 is prepared by gas atomization method.

3. A method for preparing the novel titanium-tantalum alloy dental implant material according to claim 1, characterized in that: S1 The particle size of the titanium-tantalum alloy powder is 45-100 μm.

4. A method for preparing the novel titanium-tantalum alloy dental implant material according to claim 1, characterized in that: S2 The 3D printing laser power is 300W, the scanning speed is 700mm / s, and the layer thickness is 30μm.

5. A method for preparing the novel titanium-tantalum alloy dental implant material according to claim 1, characterized in that: S3: The plasma surface treatment has a power of 200 W and a duration of 15 min.

6. A new titanium-tantalum alloy dental implant material, characterized in that: The material is prepared by the method for preparing the novel titanium-tantalum alloy dental implant material as described in any one of claims 1 to 5.

7. A novel titanium-tantalum alloy dental implant material according to claim 6, characterized in that: The novel titanium-tantalum alloy dental implant material comprises a bionic trabecular porous structure.

8. A novel titanium-tantalum alloy dental implant material according to claim 7, characterized in that: The porosity of the bionic bone trabecular porous structure is 45-65%.

9. Use of the new titanium-tantalum alloy dental implant material according to any one of claims 6 to 8 in the field of biomedical materials.

10. An application of the new titanium-tantalum alloy dental implant material according to claim 9, characterized in that: Used in the field of dental implant surgery.

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