Lengthening nasal columella is one of the common operations in plastic and cosmetic surgery. At present, rhinoplasty materials can be divided into three categories: autologous materials, allogenic materials or allogenic materials, and tissue substitutes. Autologous materials include autogenous costal cartilage and ilium. It has the advantages of no rejection for life and good compatibility with nasal tissue. The disadvantage is the surgical scar and structural defect left by the sampling area, and the function is also affected to some extent. Considering that rhinoplasty is only for improving appearance, not for treating diseases, it should be used with caution. Heterogeneous or heterogeneous materials refer to bone or cartilage materials of other people or animals, such as nasal septum cartilage. At present, the material treatment is not fully mature, and the material has been absorbed to a certain extent after operation, which is under study.

Commonly used materials (and prostheses) are introduced as follows:

A, solid polymer materials:

1, silicone rubber: (current mainstream)

Silicone rubber has good elasticity, easy molding, good chemical inertia, non-toxic, non-carcinogenic, non-teratogenic and good histocompatibility. After implantation, there was a slight transient inflammatory reaction in the local area, and a thin fibrous capsule was formed around it in the later stage. It is one of the most widely used and effective materials in rhinoplasty.

Silicone rubber can be prefabricated into nasal prostheses of various shapes and models, such as nose tip, alar and columella, and there are two commonly used ones: willow shape and "L" shape.

2. Polytetrafluoroethylene (also known as expanded)

PTFE is resistant to high and low temperatures, with good chemical stability, corrosion resistance and histocompatibility, and is non-toxic, non-carcinogenic and non-teratogenic.

Compared with silicone rubber, expanded PTFE Gore-Tex has the following advantages as a rhinoplasty material:

A, softer than silicone rubber, and more natural after operation.

B, there is no "transparency" like silicone rubber.

C, tissue can grow into the material, long-term fixation is better.

D, the probability of wear and tear due to excessive tension is low.

Disadvantages are:

First, you need to shape during surgery.

B, due to lack of hardness, can't effectively support the columella and the tip of the nose.

C, need to prevent appearance changes before postoperative healing.

D, the price is higher.