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Composite dental implant and preparation method thereof

A composite and implant technology, applied in dental implants, dentistry, prostheses, etc., can solve the problems of easy detachment of the surface antibacterial layer, limited biological activity of implants, and reduce the stress shielding effect, so as to improve the long-term antibacterial effect and Bone tissue regeneration, improving long-term stability and functionality, and solving the effect of bone tissue resorption

Pending Publication Date: 2021-10-08
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, dental implants are dense implants, the surface of which has been sandblasted and acid-etched to form a micro-nano structure, which is conducive to the growth of bone cells, but the biological activity of the implant is limited, the interface bonding force is weak, and the dense structure is also The main factors that cause interface stress concentration and stress shielding effect; therefore, people have developed a porous structure, which can reduce the overall elastic modulus of the implant, reduce the stress shielding effect, and at the same time allow bone tissue to grow into the pores to enhance the effect of osseointegration. The design of porous structure is still difficult to solve the problem of peri-implantitis; therefore, people continue to develop surface-modified implants, by modifying antibacterial components or constructing antibacterial coatings on the surface, to improve the resistance of peri-implant tissue to bacterial infection. ability, but the current surface-modified implants have limited drug loading, and the surface antibacterial layer is also prone to fall off, the duration is short, and the antibacterial effect is poor

Method used

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  • Composite dental implant and preparation method thereof
  • Composite dental implant and preparation method thereof
  • Composite dental implant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1 to Figure 3 As shown, this embodiment provides a composite dental implant, including a body 1, a countersink hole 11 is opened on the top of the body 1, the bottom of the body 1 is arc-shaped, and an external thread 12 is provided on the outer periphery of the bottom end of the body 1. The body 1 is provided with a porous structure, and the porous structure is filled with a composite body 2, the composite body 2 is integrated with the body 1, and the composite body 2 is a biodegradable material loaded with bioactive ingredients, and the bioactive ingredients have antibacterial and bone tissue properties. Induces regeneration.

[0030] The porous structure includes a first hole body 13, a second hole body 14 and a third hole body 15. The first hole body 13 is opened along the axial direction of the body 1 and penetrates the body 1. The first hole body 13 communicates with the counterbore 11. The first hole body 13 is centered on the axis of the body 1,...

Embodiment 2

[0040] The difference from Embodiment 1 is that step 1: use general medical software to calculate the three-dimensional image of the patient's tooth root before operation, and analyze the data of the tooth-missing part to establish a three-dimensional model of the main body 1. After adjusting the optimization parameters, the diameter of the main body 1 is 2mm , the thread of the external thread 12 is 1000 μm, the hole shape of the counterbore 11 is a regular hexagonal hole, the equivalent pore diameter of the porous structure is 200 μm, and the hole shape of the porous structure is square; import the data into the SLM device, start the SLM device, and the SLM Under the protection of inert gas, the equipment completes the preparation of the main body 1, takes out and cleans the main body 1, cleans the main body 1 with acetone, ethanol and deionized water under ultrasonic waves, and puts it in the air at 37°C to dry it before use;

[0041] Step 2: In parts by weight, put 0.15-0.3...

Embodiment 3

[0046] The difference from Embodiment 1 is that step 1: use general medical software to calculate the three-dimensional image of the patient's tooth root before operation, and analyze the data of the tooth-missing part to establish a three-dimensional model of the main body 1. After adjusting the optimization parameters, the diameter of the main body 1 is 3.5 mm, the thread of the external thread 12 is 600 μm, the hole shape of the counterbore 11 is a regular hexagonal hole, the equivalent pore diameter of the porous structure is 250 μm, and the hole shape of the porous structure is a square; import the data into the SLM equipment, start the SLM equipment, Under the protection of the inert gas, the SLM equipment completes the preparation of the main body 1, takes out and cleans the main body 1, cleans the main body 1 with acetone, ethanol and deionized water under ultrasonic waves, and places it in air at 37°C to dry it before use;

[0047] Step 2: Dissolve cetyltrimethylammoni...

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Abstract

The invention discloses a composite dental implant and a preparation method thereof, the composite dental implant comprises a body, the top of the body is provided with a counterbore, the bottom of the body is a cambered surface, the periphery of the bottom end of the body is provided with an external thread, the body is provided with a porous structure, the porous structure is filled with a composite body, the composite body and the body are integrally arranged, the composite body is a biodegradable material carrying bioactive components, and the bioactive components have antibacterial property and bone tissue induced regeneration property. The implant has the advantages of being simple in structure, convenient to prepare, stable in implantation, long in antibacterial effect, capable of effectively accelerating osseointegration and high in implantation success rate.

Description

technical field [0001] The invention relates to the technical field of dental implants, in particular to a composite dental implant and a preparation method thereof. Background technique [0002] With the serious aging of the population, the continuous improvement of per capita consumption level and academic promotion, people's attention and demand for implant dentures are increasing day by day, and the implant denture market in my country is in a stage of rapid development. [0003] Implant dentures are the most ideal solution for missing teeth, and are known as "the third set of teeth for human beings". Although the current dental implant technology is mature and the success rate is high, clinical research shows that the incidence of peri-implantitis is still as high as 22%, which not only affects the effect of implant, but also may lead to implant failure, and even seriously affect the success of replantation at the site of implant failure. Rate. [0004] At present, de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/12A61L27/04A61L27/06A61L27/20A61L27/22A61L27/24A61L27/54A61L27/56A61L27/58A61C8/00
CPCA61L27/06A61L27/12A61L27/047A61L27/222A61L27/24A61L27/20A61L27/58A61L27/56A61L27/54A61C8/0012A61C8/0037A61L2430/12A61L2300/102A61L2300/112A61L2300/404A61L2300/252A61L2300/412
Inventor 石海山饶瑾赵莘宜张禹瑄何福坡黄常桂周杰林姜水黎梓楷
Owner JINAN UNIVERSITY
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