Titanium is widely used in the medical field:
First, it is widely used in tooth restoration and reconstruction. Because titanium has good corrosion resistance and human body compatibility, the human body does not produce allergies when it comes in contact with it. Coupled with extremely low thermal conductivity, it can reduce the thermal stimulation of the tooth crown and tooth pulp, so it is highly regarded by dentists. Favor. Beginning in the 1980s, developed countries have used titanium to restore teeth. This kind of denture made of titanium alloy is very helpful in restoring the function of teeth. It has a beautiful appearance and no big difference in color from human teeth. Moreover, gloss, wear resistance, and corrosion resistance all meet the requirements of permanent restorations and are welcomed by people. At present, the research of titanium and titanium alloys has become one of the hot issues of dental application alloys.
Second, it can also be used in human bone, tissue transplantation and reconstruction. In a large number of surgical operations, transplantation, reconstruction and connection of human bones and tissues are common occurrences. To become a substitute material for human bones and joints, it should have the following basic properties: light weight, high strength, biocompatibility, corrosion resistance, and the tissue reaction that occurs when implanted in the body cannot cause material degradation, and The function must be maintained within the expected life, and it will not deteriorate when subjected to fatigue, wear, corrosion and impact loads. The physical and chemical properties of titanium and titanium metal meet the above performance requirements. Therefore, the use of titanium to make artificial bones not only meets the above requirements, but also according to experiments shows that human cells can regenerate bones and grow on them.
At present, titanium has been widely used in clinical replacement and repair of artificial bone joints, artificial bones, joint foot plates, broken bone fixators, intramedullary nails, artificial heart valves, skull bones, etc. Practice has proved that the application effect of titanium is good. Found that there are obvious cases of rejection with the human body. Third, surgical instruments made of titanium have long become the favorite instruments of doctors. Since the development of surgical instruments, titanium has become the protagonist. The first-generation surgical instruments were mainly made of carbon steel, and the second-generation surgical instruments were austenitic, ferritic, and martensitic stainless steel surgical instruments. However, after repeated clinical use, stainless steel was found to be toxic and would cause wound infection. Instruments made of titanium can effectively avoid the above problems. Therefore, there is the third generation of surgical instruments-titanium surgical instruments, which are light in weight, corrosion resistance, elasticity and softness. They are the first and second generation surgical instruments. It is too much, and can be scrubbed and used repeatedly after the operation, so surgical instruments made of titanium are favored by surgeons.