Titanium is non-toxic and non-magnetic. The elastic modulus of titanium alloy is similar to the elastic modulus of human bones. It has good compatibility with the human body, so it is also called "biometal". Titanium is also an important member of the family of memory alloys. Nickel-titanium alloys are alloys that people early found have memory guilt. Medical titanium plates can "remember" their own heavens. After being deformed by external forces, as long as they are given The temperature can "re-emerge" and restore its original shape. And because it contains titanium, its strength is also very high. Therefore, this alloy has become a memory alloy for use, and until today, it is still one of the relatively good open shape memory alloys.
Treating fractures with titanium sheets and titanium screws has unexpected effects. Within a few months, new bones and muscles will be combined with titanium sheets. Therefore, titanium is an ideal material for human dental implants and artificial joints.
Zygomatic plastic surgery mainly includes two concepts: one is simple chisel bone chiseling to reduce the outer contour of the cheekbones; the other is three-dimensional osteotomy, which reduces the cheekbones by shortening and moving the bone pieces. Zygomatic chiseling is generally suitable for patients with protruding anterolateral sides of the face. Intraoral incisions are often used to separate the exposed cheekbones under the periosteum, and special instruments are used to chisel and thin the part of the cheekbones designed to be removed before surgery, thereby reducing The contour of the face improves the appearance. The use of titanium nails and titanium plates is fixed so that the cheekbones will not cause slip and cause the contour of the face to lose shape, and it can better achieve the effect of shaping the cheekbones!
The advantage of this operation is that it does not leave scars after the operation, and it is seamless and does not leave traces. The operation difficulty of the three-dimensional osteotomy of the zygomatic bone is greatly increased, and it is suitable for patients with protruding zygomatic arch. In addition to the intraoral incision, it is usually necessary to make an auxiliary incision in the hidden part of the hairline, or a single intrascalp coronal incision. After the subperiosteal separation exposes the entire cheekbone, a specific size of bone is cut according to the needs of computer three-dimensional simulation design Then use special materials such as titanium nails to reconnect and shape the separated bone pieces, which can greatly change the entire facial contour and shape, and even allow the patient to achieve the effect of "reborn." In addition to zygomatic reduction, for a small number of patients, the middle part of the face is depressed due to dysplasia or defect of the zygomatic bone caused by congenital or acquired diseases, or the bilateral zygomatic asymmetric can be transplanted or faked by autologous tissue The body material is filled with the cheekbone augmentation of the zygomatic area for treatment, so as to improve the appearance.
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