Preparation method of medical porous metal material substituting for dental bone

A porous metal and dental bone technology, applied in medical science, prosthesis, etc., can solve the problems of mechanical properties such as ductility, compressive strength, insufficient bending strength, and affect the processing of porous tantalum materials, so as to improve biocompatibility and Biosafety, good pore size uniformity of the finished product, and good quality stability
CN103740962BActive Publication Date: 2015-04-08CHONGQING RUNZE PHARM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING RUNZE PHARM CO LTD
Publication Date
2015-04-08

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Abstract

The invention relates to a preparation method of a medical porous metal material substituting for a dental bone. The preparation method comprises the steps of mixing tantalum powder, a pore-forming agent and a forming agent to form mixed powder, and further pressing the powder into an organic foam body for forming, degreasing, sintering, cooling and performing heat treatment to prepare a porous tantalum material, wherein the press-forming pressure is 50-100Mpa, the pore-forming agent is one or more of urea, sodium chloride, ethyl cellulose and methyl cellulose, and the forming agent is one or more of stearic acid, zinc stearate, paraffin wax and synthetic rubber. According to the preparation method provided by the invention, tests prove that in the final porous tantalum material, the impurity content can be lower than 0.2%, the density can achieve 11.67-13.34g / cm<3>, the porosity can achieve 20-30%, and the pore diameter can achieve 5-30mu m; the elastic modulus can achieve 4.5-6.0Gpa, the bending strength can achieve 110-130Mpa, and the compressive strength can achieve 100-130Mpa. The porous tantalum material provided by the invention is very suitable for the medical implant material substituting for the dental bone.
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Description

[0001] The application of the present invention is a divisional application with application number 201110295841.6, application date of September 29, 2011, and title of the invention "a preparation method of dental bone substitute medical porous metal material". technical field

[0002] The invention relates to a preparation method of a medical porous metal implant material, in particular to a preparation method of a medical implant porous metal material replacing compact bone tissue. Background technique

[0003] Porous medical metal implant materials have important and special uses in the treatment of bone tissue trauma, femoral tissue necrosis, and replacement of dense bone tissue such as dental bone. The common materials of this type include porous metal stainless steel and porous metal titanium. As a porous implant material used in the treatment of bone tissue trauma and femoral tissue necrosis, its porosity should reach 30-80%, and the pores should be all connected and ...

Claims

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