Title:
POROUS DENTAL IMPLANT HAVING SURFACE INLAID WITH DEGRADABLE LAYER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/104852
Kind Code:
A1
Abstract:
A porous dental implant having a surface inlaid with a degradable layer and a preparation method therefor, the preparation method comprising: (1) by means of selective laser melting (SLM) technology, using pure titanium to print an implant pile (1), a surface thereof being provided with a spherical hole (a2) or a threaded groove (b2); (2) finishing an internal thread and a hexagonal connecting groove of the implant pile (1) by means of mechanical machining; (3) placing metal magnesium particles having a melting point that is lower than that of pure titanium into the spherical hole (a2) or the threaded groove (b2), heating the magnesium particles by using laser irradiation such that the temperature thereof immediately increases to the melting point thus enabling the molten liquid to quickly adhere to the spherical hole (a2) or the threaded groove (b2) so as to form a degradable layer (a3), and obtaining a dental implant after the implant pile (1) is cooled. The degradable layer of the dental implant may cover a rough surface of the SLM printed pure titanium implant pile well, and reduce the processing requirements of SLM printing; in addition, the elastic modulus and yield strength of magnesium are close to that of bone tissue, thus preventing the problem of stress shielding; moreover, magnesium has biological activity, and magnesium ions may promote cell growth.
Inventors:
ZHANG CHUNYU (CN)
JI FANGQIU (CN)
CHEN XIANSHUAI (CN)
WANG YALING (CN)
YAN YU (CN)
FENG KEHAN (CN)
FENG WEI (CN)
JI FANGQIU (CN)
CHEN XIANSHUAI (CN)
WANG YALING (CN)
YAN YU (CN)
FENG KEHAN (CN)
FENG WEI (CN)
Application Number:
PCT/CN2018/073414
Publication Date:
June 06, 2019
Filing Date:
January 19, 2018
Export Citation:
Assignee:
GUANGZHOU JIANCHI BIOTECHNOLOGY CO LTD (CN)
International Classes:
A61L27/50
Foreign References:
| CN103357063A | 2013-10-23 | |||
| CN205698065U | 2016-11-23 | |||
| CN107126281A | 2017-09-05 | |||
| CN106109032A | 2016-11-16 | |||
| US20170189276A1 | 2017-07-06 |
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
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