CN111759543A - Preparation method of thin-wall saddle-shaped titanium alveolar bone implant - Google Patents

Preparation method of thin-wall saddle-shaped titanium alveolar bone implant Download PDF

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Publication number
CN111759543A
CN111759543A CN202010642847.5A CN202010642847A CN111759543A CN 111759543 A CN111759543 A CN 111759543A CN 202010642847 A CN202010642847 A CN 202010642847A CN 111759543 A CN111759543 A CN 111759543A
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implant
alveolar bone
printing
thin
carrying
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Inventor
陈刚
秦明礼
曲选辉
张善勇
丁旺旺
陈泽鑫
路新
张百成
陶麒鹦
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • A61F2/2875—Skull or cranium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • A61F2/2875—Skull or cranium
    • A61F2002/2889—Maxillary, premaxillary or molar implants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/3097—Designing or manufacturing processes using laser
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Neurosurgery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The invention provides a preparation method of a thin-wall saddle-shaped titanium alveolar bone implant, belonging to the technical field of processing and preparation of medical materials. The method comprises the following steps of firstly designing a multi-level hole alveolar bone implant: carrying out tomography scanning on the alveolar bone of the oral cavity of the patient, and formulating an alveolar bone model at the defect part by combining a multi-level hole design idea; then writing a printing program: establishing an implant structure model according to the alveolar bone shape of a target patient, and inputting printing process parameters on a 3D printing equipment software interface to generate a printing program; and printing the implant: printing by using NiTi pre-alloy powder according to a set program; and finally, carrying out surface treatment: and cutting off the printed implant from the substrate, removing the supporting legs, and carrying out sand blasting surface treatment on the implant. The method effectively reduces the elastic modulus of the implant body, and reduces the stress concentration and stress shielding after the implant; the individual customization is realized for different patients, so that the implant can be well combined with the patients, and the treatment effect is improved.

Description

Preparation method of thin-wall saddle-shaped titanium alveolar bone implant
Technical Field
The invention relates to the field of processing and preparation of medical materials, in particular to a preparation method of a thin-wall saddle-shaped titanium alveolar bone implant.
Technical Field
Alveolar bone loss may be caused by tooth loss, periodontitis or accidental injury, which not only affects the beauty, but also may cause further oral problems and affect the physical and mental health of patients. To repair alveolar bone loss, one treatment is to pave bone powder and induce alveolar bone growth using an alveolar bone implant. This type of treatment places high demands on the shape of the implant, which needs to be configured to conform to the shape of the patient's original healthy alveolar bone. At present, the implant for alveolar bone defect repair is prepared by adopting traditional machining, however, the size and the shape of the implant are fixed, the implant is difficult to completely fit with the requirements of patients, and the comfort of the patients and the growth of alveolar bones are greatly influenced.
The pure titanium and the nickel-titanium alloy have good biocompatibility and mechanical property, and are ideal materials for manufacturing the alveolar bone implant. The traditional processing mode has difficulties in the aspects of preparing an implant with a complex structure, carrying out fine structure adjustment aiming at different patients, carrying out mechanical structure optimization design and the like. This results in a finished implant with a too high modulus of elasticity for human bone which is prone to stress concentration and stress shielding, and a shape which does not bond well to the patient and which adversely affects the therapeutic effect.
The Selective Laser Melting (SLM) technique is an additive manufacturing (commonly known as 3D printing) technique, which has a manufacturing technique for preparing parts with complex shapes by near net shape. In the implant, the larger pore size can promote the transportation and the transfer of nutrient substances, and the smaller pore size is beneficial to the formation of tissues. Therefore, the SLM technology is used for preparing the hierarchical pore thin-wall saddle-shaped alveolar bone implant, so that the elastic modulus can be effectively reduced, the transmission of nutrient substances can be promoted, the purpose of promoting cell growth is achieved, the requirements of medicine, mechanics and the like are met, and the SLM technology becomes an important development direction in oral and maxillofacial restoration medicine.
Disclosure of Invention
The invention aims to solve the problems and provides a preparation method of a thin-wall saddle-shaped titanium alveolar bone implant, which utilizes a selective laser melting technology and carries out optimized design of a hole structure, reduces the integral elastic modulus of the implant and realizes rapid customized production.
A preparation method of a thin-wall saddle-shaped titanium alveolar bone implant comprises the following steps:
(1) the design of the multi-level hole alveolar bone implant comprises the following steps: carrying out tomography (CT) on the alveolar bone of the oral cavity of the patient, reducing the structure of the defect part, and formulating an alveolar bone model of the defect part by combining with a multi-level hole design idea.
(2) Writing a printing program: establishing an implant structure model according to the alveolar bone shape of a target patient, and inputting printing process parameters on a 3D printing equipment software interface to generate a printing program;
(3) printing the implant: printing by using NiTi pre-alloy powder according to a set program;
(4) surface treatment: and cutting off the printed implant from the substrate, removing the supporting legs, and carrying out sand blasting surface treatment on the implant.
Furthermore, the multistage holes are circular holes with the designed size ranging from 0.3 mm to 1.5mm, and the holes with different diameters are arranged in a crossed mode.
Further, the powder is fluidized hydrogenated dehydrogenated pure titanium powder or atomized NiTi prealloyed powder.
Further, the alveolar bone implant is prepared by a selective laser melting technology.
Furthermore, the printing parameters are the layer thickness of 20-50 μm, the scanning speed of 300-1300 mm/s, the power of 100-220W, and the scanning distance of 0.10-0.15 mm.
The saddle shape is the general shape, and the concrete shape is designed according to the alveolar bone structure of the patient, can be well combined with the patient.
Compared with the prior art, the invention has the following advantages:
(1) the invention adopts a multi-level hole structure, effectively reduces the elastic modulus of the implant and reduces the stress concentration and stress shielding after the implant;
(2) the invention adopts a multi-level pore structure, is beneficial to improving the biocompatibility of the implant and the transportation of nutrient substances, and can accelerate the proliferation of bone cells and the growth of bone tissues;
(3) the invention adopts the selective laser melting technology for printing and preparation, realizes the near-net forming of the implant with a complex structure, improves the efficiency and reduces the cost;
(4) the invention adopts the selective laser melting technology for printing and preparation, realizes the personalized customization aiming at different patients, enables the implant to be well combined with the patients and improves the treatment effect.
In order to obtain the thin-wall saddle-shaped titanium alveolar bone implant, the invention adopts the following technical scheme, which comprises the following specific steps:
(1) designing the alveolar bone with the multilevel holes: carrying out tomography (CT) on the alveolar bone of the oral cavity of the patient, reducing the structure of the defect part, and formulating an alveolar bone model of the defect part by combining with a multi-level hole design idea.
(2) Writing a printing program: and establishing an implant structural model according to the alveolar bone shape of the target patient, and designing the shape, the number of pores and the size of the pores. And inputting printing process parameters on a software interface of the 3D printing equipment to generate a printing program.
(3) Printing the implant: the printing was carried out using fluidized treatment of hydrogenated dehydrogenated pure titanium powder or atomized NiTi prealloyed powder, according to the set procedure.
(4) Surface treatment: and cutting off the printed implant from the substrate, removing the supporting legs, and carrying out surface treatment such as sand blasting on the implant.
The invention will be further explained with reference to the drawings.
Drawings
FIG. 1 is a flow chart of a method for preparing a thin-walled saddle-shaped titanium alveolar bone implant according to the present invention.
Figure 2 is a schematic representation of a product of the invention.
Detailed Description
Example 1
1. A multilevel pore structure model of the implant is established through computed tomography data, pores with the cross distribution diameters of 1mm, 0.6mm and 0.5mm are designed, and the number of the pores is 30. Setting the printing process parameters as follows: the layer thickness h was 30 μm, the scanning speed v was 1000mm/s, the laser power P was 200W, and the scanning pitch HD was 0.12mm, thereby creating a printing program.
2. The NiTi pre-alloy powder is used as a raw material, and SLM printing equipment is used for printing and forming the implant according to a set program.
3. And cutting the implant after printing from the substrate. The support on the implant is removed and the grit blasted for an additional 5 minutes. And cleaning and drying to obtain the finished product alveolar bone implant.
4. The results of biological experiments show that the cell proliferation is good, and the implant has excellent biocompatibility.
Example 2
1. A multilevel pore structure model of the implant is established through computed tomography data, pores with the cross distribution diameters of 1mm, 0.6mm and 0.5mm are designed, and the number of the pores is 36. Setting the printing process parameters as follows: the layer thickness h is 30 μm, the scanning speed v is 1250mm/s, the laser power P is 225W, and the scanning pitch HD is 0.12 mm. A print program is generated.
2. The NiTi pre-alloy powder is used as a raw material, and SLM printing equipment is used for printing and forming the implant according to a set program.
3. And cutting the implant after printing from the substrate. The support on the implant is removed and the grit blasted for an additional 5 minutes. And cleaning and drying to obtain the finished product alveolar bone implant.
4. The results of biological experiments show that the cell proliferation is good, and the implant has excellent biocompatibility.
Example 3
1. A multilevel pore structure model of the implant is established through computed tomography data, pores with the cross distribution diameters of 1mm, 0.6mm and 0.5mm are designed, and the number of the pores is 33. Setting the printing process parameters as follows: the layer thickness h is 30 μm, the scanning speed v is 500mm/s, the laser power P is 125W, and the scanning pitch HD is 0.12 mm. A print program is generated.
2. The implant is printed and formed by using fluidized hydrogenated dehydrogenated pure titanium powder as a raw material according to a set program by using SLM (selective laser melting) printing equipment.
3. And cutting the implant after printing from the substrate. The support on the implant is removed and the grit blasted for 8 minutes. And cleaning and drying to obtain the finished product alveolar bone implant.
4. The results of biological experiments show that the cell proliferation is good, and the implant has excellent biocompatibility.
Example 4
1. An implant structure model is established through computed tomography data, the diameter of implant pores is designed to be 1mm, and the number of the pores is designed to be 30. Setting the printing process parameters as follows: the layer thickness h is 30 μm, the scanning speed v is 1250mm/s, the laser power P is 200W, and the scanning pitch HD is 0.12 mm. A print program is generated.
2. The implant is printed and formed by using fluidized hydrogenated dehydrogenated pure titanium powder as a raw material according to a set program by using SLM (selective laser melting) printing equipment.
3. And cutting the implant after printing from the substrate. The support on the implant is removed and the grit blasted for an additional 5 minutes. And cleaning and drying to obtain the finished product alveolar bone implant.
4. Biological experiment results show that the cell proliferation state is poor, and compared with a single-aperture implant and a multi-aperture implant, the single-aperture implant and the multi-aperture implant are poor in biocompatibility.
The above embodiments are provided only for illustrating the present invention, and not for limiting the present invention, and those skilled in the art can make material changes or structural modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.

Claims (5)

1. A preparation method of a thin-wall saddle-shaped titanium alveolar bone implant is characterized by comprising the following steps:
(1) the design of the multi-level hole alveolar bone implant comprises the following steps: carrying out tomography (CT) on the alveolar bone of the oral cavity of the patient, reducing the structure of the defect, and formulating an alveolar bone model of the defect by combining a multi-level hole design idea;
(2) writing a printing program: establishing an implant structure model according to the alveolar bone shape of a target patient, and inputting printing process parameters on a 3D printing equipment software interface to generate a printing program;
(3) printing the implant: printing by using NiTi pre-alloy powder according to a set program;
(4) surface treatment: and cutting off the printed implant from the substrate, removing the supporting legs, and carrying out sand blasting surface treatment on the implant.
2. The method for preparing a thin-walled saddle-shaped titanium alveolar bone implant according to claim 1, wherein the hierarchical holes are circular holes having a designed size ranging from 0.3 to 1.5mm, and holes having different diameters are arranged in a crossing manner.
3. The method of claim 1, wherein the powder is fluidized hydrogenated dehydrogenated pure titanium powder or atomized NiTi prealloyed powder.
4. The method of claim 1, wherein the implant is prepared using a selective laser melting technique.
5. The method for preparing a thin-walled saddle-shaped titanium alveolar bone implant according to claim 1, wherein the printing parameters are a layer thickness of 20 to 50 μm, a scanning speed of 300 to 1300mm/s, a power of 100 to 220W, and a scanning pitch of 0.10 to 0.15 mm.
CN202010642847.5A 2020-07-06 2020-07-06 Preparation method of thin-wall saddle-shaped titanium alveolar bone implant Pending CN111759543A (en)

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US20160157965A1 (en) * 2008-08-26 2016-06-09 Andy Boiangiu Dental bone implant and implant method
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CN107280789A (en) * 2016-04-12 2017-10-24 重庆润泽医药有限公司 A kind of tooth implant
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CN108742901A (en) * 2018-06-20 2018-11-06 广州市健齿生物科技有限公司 A kind of saddle type dental implant
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