The main component of silica gel is silica, which has good stability and physical inertia, is resistant to tissue fluid corrosion, and is not absorbed and explained by human metabolism. It also has good plasticity and heat resistance. Medical silica gel has been used in clinic for decades, and it has been proved that it has a wide range of functions, safety and non-toxicity. Advantages: relatively cheap price, strong plasticity and wide application. The aquiline nose with prominent bridge of nose can also be rhinoplasty with silica gel. Disadvantages: translucent, easy to slide, hard texture. The prosthesis may shake, fall off, skew or even break the skin after operation.

The full name of expanded PTFE is an inert expanded polymer, which is composed of many PTFE nodules, and there are many fine fibers interwoven in many directions between the nodules, which have ultra-micro porous structure. These micropores allow tissue to grow, braking it and being accepted by the body's immune system. Advantages: The advantage of swelling is that its material is close to human nasal tissue, with good compatibility and relatively natural postoperative thinking.

The tiny blood vessels can grow into the swollen body, so that the prosthesis is not easy to slide, the stability is improved, the rejection reaction is less, the material is opaque, the weight is light, there is no obvious falling feeling, and there is no compression and atrophy effect on bone tissue. Disadvantages: the material is soft, which is not enough to provide structural support for raising the nose column. In case something goes wrong, it will be more troublesome to take out the prosthesis.

The expanding microporous virus can enter, but the immune cells of human body can't. Once infection occurs, the prosthesis must be removed. The advantages and disadvantages of silica gel and swelling are obvious, but in the clinical application of comprehensive rhinoplasty, which is the mainstream in medical and aesthetic circles, it is more to take its essence, choose materials according to different situations, and use autologous cartilage design instead of a single method.