As a new kind of alloy, the medical titanium alloy is also a carrier material, which is widely used in the field of limb implantation, replacement of sexual function, dentistry, medical device and so on. Titanium and titanium alloys are characterized by good corrosion resistance, higher than strength, low modulus of elasticity, fatigue resistance and good biocompatibility. Including biocompatibility this characteristic makes it has unique advantages compared with other metals, thus gain favor in the medical field, but because of its resistance to wear and process performance is not high, is committed to the further improvement has been conducted.
With the rapid development of national economy, medical titanium alloy has been increasing in the medical field due to its excellent performance. As a metal material with excellent biological properties, titanium and its alloys have good prospects in the field of medicine. However, compared with the developed countries at present, the research and development and application of titanium alloy material also has certain gap, such as: the titanium alloy has high elastic modulus and poor surface activity, lack of poor wear resistance and corrosion resistance, will directly affect the biocompatibility of material. Therefore, in order to develop better comprehensive properties of new type of titanium alloy, our country should increase the intensity of materials research and development, pay attention to innovation, the development of low elastic modulus, high wear resistance, corrosion resistance, and biomedical titanium alloy material with excellent biocompatibility.
Titanium and human connective tissue, bone epithelial tissue have good affinity, good mechanical properties also reflect its advantages in medical alloy. With small density, light weight, good corrosion resistance and comfortable wear, titanium is widely favored as a denture (dental implant). In addition, the titanium denture has been treated by the surface, and the aesthetic performance is increased, which can meet the needs of the public for the beauty and give people a visual enjoyment.
Each year, according to the relevant literature in the world there are about 100 million patients with knee and arm joints and related inflammation, to replace the surgical treatment is imperative, therefore good substitution features of titanium alloys for this. Compared with ceramics, stainless steel and other materials, the elastic modulus of titanium alloy is closer to the human skeleton, and has an advantage in the size of the modulus. Therefore, titanium alloy has been widely used in ankle and elbow joints. In addition, the porous titanium alloy material can make the prosthesis have biological activity, which can help the healing of the femoral head. The biocompatibility of titanium alloy surface is good, which can induce the growth of bone cells. Therefore, it is highly recommended by clinicians and experts in orthopedics.
Implantation prosthetics, titanium and titanium alloys as the advantages of implant repair mainly include: high strength, chemical stability and biocompatibility; No poison, no harm to human body; The low modulus of elasticity is more suitable for human bone. The elastic capability and shape recovery function of the memory alloy. To sum up, the application of titanium in skull repair is mainly reflected in: titanium mesh can be used to repair the defect of skull. Cardiovascular applications include artificial heart valves, blood filters, pacemakers and artificial heart pumps.
