Porous structure tantalum metal dental implant and processing method thereof

Abstract

The invention discloses a porous structure tantalum metal dental implant and a processing method thereof, and belongs to the technical field of dental cavities. Comprising a pure titanium entity part and a tantalum trabecula part, the pure titanium entity part is provided with a self-tapping thread; the tantalum trabecula part is of a spiral structure; a spiral groove for embedding a tantalum trabecula is formed along the self-tapping thread of the pure titanium entity part; the tantalum trabecula part is located in the corresponding spiral groove. According to the invention, the osseointegration effect is integrally and uniformly improved, the osseointegration time is shortened, and the stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dental and oral technologies, and particularly to a tantalum metal dental implant with a porous structure and a processing method thereof. Background Art

[0002] At present, dental implants are mainly prepared as dense screws from titanium and titanium alloys through traditional machining. Since the mechanical properties of titanium and titanium alloys are quite different from those of human bones, especially their elastic modulus is much higher than that of human bones, there is a problem in clinical use that about 5-10% of dental implants fail due to aseptic loosening caused by stress shielding-induced bone dissolution. Moreover, titanium and titanium alloy dental implants can only slowly form surface bone bonding and cannot form rapid bone ingrowth, resulting in a long implantation period and difficulty in achieving immediate implantation. In addition, for middle-aged and elderly people with problems such as poor alveolar bone quality and osteoporosis, the initial implantation stability of titanium and titanium alloy dental implants is poor, leading to difficult implantation, long treatment period. Spraying bioactive ceramic / glass coatings on the implant surface, surface acid etching roughening treatment, etc. still cannot completely solve the above problems. Summary of the Invention

[0003] The present invention provides a tantalum metal dental implant with a porous structure and a processing method thereof to solve the technical problems, which can uniformly increase the bone bonding effect, reduce the bone bonding time, and improve the stability as a whole.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A tantalum metal dental implant with a porous structure includes a pure titanium solid part and a tantalum trabecular part; self-tapping threads are provided on the pure titanium solid part; the tantalum trabecular part is in a spiral structure; spiral grooves for embedding the tantalum trabecular are provided along the self-tapping threads of the pure titanium solid part; the tantalum trabecular part is located in the corresponding spiral grooves.

[0006] A processing method of a tantalum metal dental implant with a porous structure is used to process the above-mentioned tantalum metal dental implant with a porous structure, and the specific steps are as follows:

[0007] Step 1: Use a bar of pure titanium material to successively process an inner hole, threads, and spiral grooves for fitting with a abutment on a longitudinal cutting device;

[0008] Step 2: Use a metal 3D printing device to print the tantalum trabecular part according to the specified pore diameter and porosity;

[0009] Step 3: Assemble the tantalum trabecular part into the spiral grooves, and then realize the cold welding of the tantalum trabecular part and the pure titanium solid part through the characteristics of the metal itself;

[0010] Step 4: Finish machining the cold-welded part to finally obtain a tantalum metal dental implant with a porous structure.

[0011] The present invention has the following advantages compared with the prior art:

[0012] In this technology, the entire external thread of the implant penetrates the tantalum trabecular structure. After implantation, the bone-bonding effect is uniformly increased as a whole, the bone-bonding time is reduced, and the purpose of improving stability is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0014] Figure 2 is a schematic diagram of the pure titanium solid part of an embodiment of the present invention;

[0015] Figure 3 is a schematic diagram of the structure of the tantalum trabecular part of an embodiment of the present invention;

[0016] Figure 4 is an assembly scene diagram of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0018] The present invention will be further described below in conjunction with embodiments. The purpose is only to better understand the content of the present invention. Therefore, the specific embodiments cited do not limit the protection scope of the present invention. In addition, only parts related to the present invention are shown in the drawings, not all structures.

[0019] Refer to Figure 1 , a porous tantalum metal dental implant, comprising a pure titanium solid part and a tantalum trabecular part; a self-tapping thread is provided on the pure titanium solid part; the tantalum trabecular part is a spiral structure; a spiral groove for embedding the tantalum trabecular is provided along the self-tapping thread of the pure titanium solid part; the tantalum trabecular part is located in the corresponding spiral groove.

[0020] A processing method for a porous tantalum metal dental implant for processing the above-mentioned porous tantalum metal dental implant, the specific steps are as follows:

[0021] Step 1, using a bar made of pure titanium material, process the external thread and internal hole on a longitudinal cutting device, such as Figure 2 ;

[0022] Step 2, using a metal 3D printing device, print the trabecular part of the tantalum material according to the specified pore diameter and porosity, such as Figure 3 ;

[0023] Step 3, assemble the pure titanium solid part and the tantalum trabecular part through a specific shaping tooling, and utilize the characteristics of the metal itself to achieve a cold welding effect, such as Figure 4 .

[0024] The present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A porous tantalum metal dental implant, characterized in that: It comprises a pure titanium entity part and a tantalum beam part; the pure titanium entity part is provided with a self-tapping thread; the tantalum beam part is a spiral structure; a spiral groove for embedding the tantalum beam is provided along the self-tapping thread of the pure titanium entity part; the tantalum beam part is located in the corresponding spiral groove.

2. A method for processing a porous tantalum metal dental implant, characterized in that: For processing the porous tantalum metal dental implant as claimed in claim 1, the specific steps are as follows: Step 1, using a pure titanium rod, sequentially processing the inner hole, thread and spiral groove of the base in a longitudinal cutting device; Step 2, using metal 3D printing equipment to print the tantalum trabeculae according to the specified pore size and porosity; Step 3, assembling the tantalum beam part into the spiral groove, and then cold welding the tantalum beam part and the pure titanium solid part by using the characteristics of the metal itself; Step 4, finishing the cold-welded part to finally obtain a porous tantalum metal dental implant.

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