With the rapid development of national economy, the demand of medical titanium alloy is increasing with its excellent performance. As a metal material with excellent biological properties, titanium and its alloy have a good application prospect in the field of medicine. However, compared with developed countries, there are still some gaps in the development and application of titanium alloy in China. For example, high elastic modulus, poor surface activity, poor wear resistance and corrosion resistance of titanium alloy will directly affect the biocompatibility of materials. Therefore, in order to develop new titanium alloys with better comprehensive performance, China should strengthen the research and development of materials, pay attention to innovation, and develop bio-medical titanium alloys with low elastic modulus, high wear resistance, corrosion resistance and excellent biocompatibility.
Titanium has good affinity to human tissue and bone epithelium, and its excellent mechanical properties also show its advantages in medical alloy. Because of its low density, light weight, good corrosion resistance and comfortable wearing, titanium as denture (implant teeth) has been widely favored. In addition, after the surface treatment of titanium denture, its aesthetic performance increases, which can meet the public's demand for beauty and give people visual enjoyment.
According to relevant literature, about 100 million patients in the world suffer from inflammation related to knee and arm joints every year, so replacement surgery is necessary, so titanium alloy with excellent replacement function brings good news. Compared with ceramic, stainless steel and other materials, the elastic modulus of titanium alloy is closer to the human skeleton, and it has more advantages in the size of modulus. Therefore, titanium alloy is widely used in ankle joint and elbow joint correction. In addition, the porous titanium alloy can make the prosthesis bioactive and contribute to the healing of femoral head. The biocompatibility on the surface of titanium alloy is good, which can induce the growth of bone cells.
The advantages of the implantable prosthetics, titanium and titanium alloy as the implantable prosthetics mainly include: high luminance, good chemical stability and biocompatibility; Non - toxic to human body will not cause harm; The elastic modulus is low, which matches the human skeleton better. Compact memory alloy has the ability of elasticity and shape restoration. In summary, the application of titanium in skull repair is mainly reflected in: the skull can be repaired with titanium mesh. Applications in the cardiovascular field of the human body include the preparation of artificial heart valves, blood filters, pacemakers and artificial heart pumps.
