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The Role Of Titanium In The Medical Field

wallpapers News 2020-12-28
Among the metal elements, titanium has a high specific strength. It is a high-strength but low-quality metal with fairly good ductility (especially in an oxygen-free environment). The surface of titanium is silver-white and metallic. Its melting point is quite high (over 1,649 degrees Celsius), so it is a good refractory metal material. It is paramagnetic, and its electrical and thermal conductivity are very low.
 
Medicine
 
Small titanium plates and screws are used to fix the broken bones of the eye frame fracture.
 
Due to its biocompatibility (non-toxic and non-rejection by the human body), titanium has a wide range of applications in medicine, including surgical appliances and implants, such as replacement of hip frames and ball joints, which can last for up to 20 years. Titanium for this purpose is generally combined with 4% aluminum or 6% aluminum.
4% vanadium is made into alloy.

 
Titanium has an inherent bone fusion property that allows titanium dental implants to stay in place for 30 years. This feature is also quite useful for orthopedic implants. The advantage of using titanium is that titanium has a lower elastic modulus (Young's modulus), which is closer to bone, and the implant is made for the purpose of repairing bone. Therefore, the bone load will be more evenly distributed between the bone and the implant, which will reduce the chance of bone loss, because if the load is uneven, there will be stress shielding (the bone stress is reduced by the implant. Mass loss), and periprosthetic fractures between the surgical implant and the bone. However, the rigidity of titanium alloy is still twice that of bone, so the force on the bone around the implant will still be greatly reduced and may be degraded.
 
Because titanium is not ferromagnetic, patients with titanium implants can safely undergo MRI examinations (this is convenient for those with long-term implants). The titanium to be implanted in the human body is heated by a plasma arc to remove surface atoms, and the newly exposed surface is then oxidized.
 
Titanium is made into surgical instruments for image-guided surgery, as well as wheelchairs, crutches and other products that require high strength and low weight.

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