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Dental implant and preparation method thereof

A technology of dental implants and implants, applied in dentistry, dental implants, dental restorations, etc., can solve problems such as poor bonding strength, and achieve the effect of firm connection, improved bonding strength, and perfect connection

Inactive Publication Date: 2012-10-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect of poor bonding strength between the existing dental implant and the alveolar bone, and provide a novel dental implant and its preparation method. A porous structure suitable for bone ingrowth is constructed at the bottom of the dental implant. Through bone growth into the porous structure, the dental implant and the alveolar bone can be fitted firmly, so as to increase the bonding strength between the dental implant and the alveolar bone, improve the long-term effectiveness of the dental implant, and improve the success rate of implant surgery

Method used

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preparation example Construction

[0020] The preparation method of novel porous structure dental implant of the present invention comprises the following steps:

[0021] The first step is to use known commercial CAD software, such as: Unigraphix, Pro / E, Catia, etc., to design the overall structure of the dental implant, and to design the porous structure according to the principle of facilitating the growth of cells and tissues 4 The structure: the pores are completely connected to each other, the pore size is designed to be 300-1000 microns, the porosity is designed to be 60%-90%, and the CAD design data of the dental implant with a porous structure at the bottom is stored as STL file format.

[0022] In the second step, the CAD model design data of the above-mentioned dental implant is input into the rapid prototyping system, which is mainly used to control the scanning path of the electron beam, and the materialize's Magics software in the system is used to analyze the dental implant. Carry out layered sli...

Embodiment 1

[0029] First, use the well-known commercial CAD software Unigraphix to design the overall structure of the dental implant, and then design a diamond molecular structure porous structure 4 at the end of the implant according to the basic principles that are conducive to the growth of cells and tissues. The pore size is 300 microns. The porosity is 60%, and the pores are completely connected to each other. The CAD design data of the designed porous structure is stored in the STL file format; the STL data is input into the rapid prototyping system, and the layered slice processing is performed to obtain the two-dimensional dental implant. Information data; then direct metal rapid prototyping is carried out, the Ti metal powder material is sent to the predetermined area by the powder feeding mechanism, the powder spreading mechanism flattens and compacts the powder, and then, the electron beam is controlled by the computer according to the obtained Scan the two-dimensional informat...

Embodiment 2

[0031]First, use the commercial CAD software Pro / E to design the overall structure of the dental implant, and then design a porous structure 4 with a diamond molecular structure at the bottom of the implant according to the basic principles that are conducive to the growth of cells and tissues. The pore size is 650 micron, the porosity is 75%, and the pores are completely connected to each other. The designed CAD model of the dental implant is stored in the STL file format; the STL data is input into the rapid prototyping system, and the layered slice processing is performed to obtain the second image of the dental implant. Dimensional information data; then directly carry out metal rapid prototyping manufacturing, the cobalt-chromium-molybdenum alloy powder material is sent to the predetermined area by the powder feeding mechanism, and the powder spreading mechanism flattens and compacts the powder, and then, the electron beam is controlled by the computer according to Scan th...

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Abstract

Provided is a dental implant and a preparation method of the dental implant. The dental implant comprises a dental implant body and a porous structure body; the dental implant body is internally provided with an inner threaded hole connected with a base station, external threads connected with an alveolar bone are arranged on the outer surface of the dental implant body, the porous structure body is connected to the bottom of the dental implant body, pores of the porous structure body are mutually and completely communicated, the size of the pore is 300-1000 micrometers, and the porosity is 60-90%. The preparation method is as follows: designing a dental implant structure by a commonly known CAD software and storing CAD design data in a STL file layout; inputting the CAD design data into a rapid forming system which carries out layered slicing treatment to obtain two-dimension information data, and rapidly forming and making the dental implant; and machining the inner threaded hole and the outer screw thread on the dental implant body of the dental implant. As the porous structure is arranged at the bottom of the dental implant, into which bones can well grow, and the surface of the porous structure is rough, the bonding strength between the dental implant and the alveolar bone is improved.

Description

technical field [0001] The invention relates to a dental implant in the technical field of biomedical engineering and a preparation method thereof, in particular to a dental implant and a preparation method thereof. Background technique [0002] In recent years, the application of dental implant technology has aroused people's high attention. The implanted teeth can not only solve the confusion of traditional denture restoration, but also get rid of the inconvenience caused by movable dentures. close to natural teeth. The success of implant surgery and the good function of restoration depend on many factors, and the combination effect of implant and alveolar bone is one of the key factors. In order to promote the integration of implants and alveolar bone, dental implants with rough surfaces have been widely used. Animal experiments and clinical practice have shown that compared with smooth surfaces, rough surfaces can increase the osseointegration surface area and are benef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C8/00
Inventor 李祥王成焘罗云
Owner SHANGHAI JIAO TONG UNIV
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