titanium alloys are mainly used to produce and manufacture surgical implants and orthopedic equipment products, such as dental implants, artificial joints and vascular stents. Its main medical uses are as follows:
1. Bone and joint substitutes
Bone and joint substitutes Titanium and titanium alloys have a high density, low elastic modulus, and biocompatibility, which can avoid the occurrence of local bone absorption. Therefore, they are very good artificial bones, joints and other hard tissue replacement materials. The acetabular cup and cuboid handle of artificial hip joint prosthesis are usually made of titanium and titanium alloys. After the acetabulum is fixed, the joint head can move freely in the acetabular cup. Artificial knee joints are also often made of titanium and titanium alloys, which consist of three parts: tibial component, femoral component and patellar component. Bone and joint substitutes will be affected by the body's torsion, extrusion, muscle contraction force, etc. in the human body, so the strength and toughness of the implants are very high. Pure titanium can be used in parts of the human body with less force, and TC4 titanium alloy can be used in parts of the human body with greater force. In 1985, Swiss Sulzer Company used Ti-6Al-7Nb alloy to manufacture artificial hip joint stems and applied them.
2. Cardiovascular repair materials
Examples of the application of titanium and titanium alloys in human cardiovascular are artificial heart valves, blood filters, pacemakers and artificial heart pumps. Its advantages are mainly:
1) High strength, good chemical stability and excellent biocompatibility;
2) Titanium is non-magnetic and rarely produces false images in magnetic resonance imaging MRI;
3) NiTi shape memory alloy has elasticity, shape memory effect recovery function and good biocompatibility, which are very suitable for medical applications. NiTi alloy is in martensitic state at low temperature (near zero degrees) and can easily become a shape that is easy to introduce into the human body. When the temperature rises to body temperature, it will produce a reverse phase change, thereby restoring to the original set shape and generating a large restoring force to play a role in correction and support.
In recent years, the application of NiTi shape memory alloy in vascular stents has attracted much attention. If you want to know more about nitinol materials, please feel free to contact amybai2010@zwmet.com or 0086-18161909780 (WhatsApp), we have a professional nitinol technical team to answer your questions.
3. Dental implants
Titanium alloy and nitinol alloy are widely used as dental restoration materials. Their advantages are as follows:
①Titanium dissolves less in acidic and alkaline environments, and there is no corrosion and discoloration problem of silver alloy;
②It is very safe for the human body and will not cause hypersensitivity reactions caused by nickel alloys;
③The density of pure titanium is only 4.50 g/cm3, which is close to the density of natural teeth. The manufactured gums are light in weight and have a good feeling of dentures;
④Nitinol has good superelasticity and shape memory effect; when it reaches the end temperature of its own austenite, it returns to the original set shape and generates a large restoring force to play a role in correction and support.
⑤Compared with traditional gum materials, it has the characteristic of not changing the taste of food when chewing. Therefore, titanium and titanium alloys are the dental materials with the best clinical application effects so far, and pure titanium and TC4 titanium alloys are the main materials used in the dental field.
Therefore, titanium alloys and nitinol alloy are the dental materials with the best clinical application effects so far, and pure titanium and TC4 titanium alloys are the main materials used in the dental field.
