A preparation method for 3D printing porous root-shaped dental implants

A 3D printing and dental implant technology, applied in dental implants, dentistry, dental prosthetics, etc., can solve the problems of difficulty in ensuring the microporous structure parameters of porous materials, and inability to accurately control the porous morphological structure, so as to shorten the implantation time. , to meet the accuracy and speed up the effect

Active Publication Date: 2021-05-04
陕西西科微智三维数字医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing porous titanium implants are generally processed by traditional manufacturing processes such as bead spraying, powder sintering, solid-state foaming, carbon fiber compression sintering, and polymer replication, which cannot accurately control the porous morphology and structure, and it is difficult to ensure the microstructure of porous materials. Pore ​​structure parameters (porosity, pore diameter, wire diameter, pore type, spatial arrangement)

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  • A preparation method for 3D printing porous root-shaped dental implants

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preparation example Construction

[0024] The present invention is a method for preparing a 3D printed porous root-shaped dental implant. The dental implant prepared by the method is as follows: figure 1 As shown, the method includes the following steps:

[0025] Step 1) Utilize CBCT to take the medical image data of the patient's maxillofacial region, and import the medical image data of the maxillofacial region into 3D image generation and editing processing software. The 3D image generation and editing processing software is Mimics software. Edit the imported medical image data of the maxillofacial region, delete images other than tooth root 1, keep only the medical image data of the affected tooth, and convert and export the STL format file of the affected tooth.

[0026] In step 1), edit the imported medical image data of the maxillofacial region according to the tissue density threshold, and delete images other than root 1. Specifically, adjust the tissue density threshold to a high tissue density value o...

Embodiment 1

[0037] This embodiment provides a method for preparing a 3D printed porous root-shaped dental implant, comprising the following steps:

[0038]Step 1) Utilize CBCT to take the medical image data of the patient's maxillofacial region, and import the medical image data of the maxillofacial region into Mimics software, adjust the threshold of tissue density to 1250Hu, and analyze the imported medical imaging data of the maxillofacial region according to the threshold of tissue density. Edit the image data, delete images other than tooth root 1, keep only the medical image data of the affected tooth, and convert and export the STL format file of the affected tooth.

[0039] Step 2) Import the STL format file of the affected tooth into Geomagic studio software to obtain the affected tooth model, delete the visible sharp corner features, undercuts and undulations by adjusting the grid of the affected tooth model, perform smoothing, and use the principle of quadrilateral point layout ...

Embodiment 2

[0044] This embodiment provides a method for preparing a 3D printed porous root-shaped dental implant, comprising the following steps:

[0045] Step 1) Utilize CBCT to take the medical image data of the patient's maxillofacial region, import the medical image data of the maxillofacial region into Mimics software, adjust the threshold of tissue density to 3810Hu, and analyze the imported medical imaging data of the maxillofacial region according to the threshold of tissue density. Edit the image data, edit the imported maxillofacial medical image data according to the tissue density threshold, delete the non-root 1 image, keep only the medical image data of the affected tooth, convert and export the STL format file of the affected tooth.

[0046] Step 2) Import the STL format file of the affected tooth into Geomagic studio software to obtain the affected tooth model, delete the visible sharp corner features, undercuts and undulations by adjusting the grid of the affected tooth m...

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Abstract

The invention discloses a method for preparing a 3D printed porous root-shaped dental implant. Firstly, CBCT is used to shoot the medical image data of the patient's maxillofacial region, and the medical image data of the maxillofacial region is imported into 3D image generation and editing processing software. Convert and export the STL format file of the affected tooth; use the STL format file of the affected tooth to obtain the STL fitting model of the affected tooth; then import the STL fitting model of the affected tooth into the 3D modeling software for reverse reconstruction and forward design of the implant ; Finally, the 3D printing equipment prints the implant. The dental implant prepared by the invention can increase the contact area with normal bone through the pores on the surface, ensure the ingrowth of osteoblasts, accelerate the rate of clinical osseointegration, and make the dental implant more stable.

Description

technical field [0001] The invention belongs to the technical field of dental implants, and in particular relates to a method for preparing 3D printed porous root-shaped dental implants. Background technique [0002] The materials of traditional dental implants are mainly titanium and titanium alloys, which have good mechanical properties and biocompatibility and become the most widely used materials in oral implants. However, the elastic modulus of solid titanium implants widely used at present is significantly higher than that of human bone tissue. After implantation, stress shielding and stress concentration may occur, which will cause the degradation and absorption of bone tissue around the implant, and even lead to implant loosening. In addition, the shape of the implant is mainly the surface thread structure. This screw-type implantation method will cause a very large extrusion force on the alveolar bone tissue, and the thread structure has a limited effect on increasi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C8/00B33Y10/00B33Y50/00B33Y80/00
CPCA61C8/0037B33Y10/00B33Y50/00B33Y80/00
Inventor 黄硕刘昌奎郭芳柴娟朱勇刘宁
Owner 陕西西科微智三维数字医疗科技有限公司
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