For the average passerby, the middle of the face is sunken is really familiar, honestly, this is also the human race decision, the average yellow people really rarely have side face, front face are grown just right, the five features are three-dimensional fullness just right. Many people have underdeveloped center of the face, the base of the nose is low and flat, or even sunken. Yellow side face will not be too good, many people lips convex, nose bridge collapse, forehead flat, collection and eyes on the same plane, eyeballs protruding, the tip of the nose and chin line can completely touch the lips, chin retraction serious. First of all, let’s clarify the position of nasal base – nasal base is actually a relatively ambiguous concept, can be roughly circled in the nose and the upper lip connected to the base of the part. From the orthognathic surgery point of view, the so-called nasal base is actually the bony part of the nose that extends to both sides with the anterior nasal ridge as the center, and here is a medical diagram that shows the exact anterior nasal ridge in this position. The bony part that extends to both sides, then this part of the bone underdevelopment of the person is easy to show the face in the middle of the face of the sunken face, the most fundamental solution is to move these two sides of the bone block forward, but, if the teeth and jawbone development is normal, the bite of the upper and lower jaw teeth is normal, there is no ground or buck teeth, just the upper jawbone is underdeveloped, you have to go to move the bone, inevitably, the trauma is too big, and the recovery is lengthy, and the bone will be moved. Therefore, in the plastic surgery market, the use of prosthesis to fill the base of the nose came into being, less traumatic, fast recovery, good results, simple techniques, regular plastic surgeons can do, – why not? Nasal base surgery is usually done in two ways: the first: with the anterior nasal ridge as the center, fill the prosthesis to the extended sides The second: belonging to the overdevelopment of the upper alveolus, resulting in both sides of the, side and back of the nose underneath the depression, so that the general use of the two sides of the moon-shaped prosthesis filling, is used to cushion the step caused by the maxilla, so that it creates a certain slope. However, if it is really because the maxilla is too prominent, it is safer to have surgery to push the maxilla back. It is very important to note that if the hollowing in the middle of the face is caused by aging and sagging, it must not be solved by nasal base filler surgery, which will not alleviate the symptoms, but will deepen the tear troughs under the bags under the eyes. Then, the filler material is the same as rhinoplasty. The first choice: autologous cartilage material – ear cartilage, rib cartilage, nasal septum cartilage, can be la, will not produce rejection, the infection rate is minimal, absorption is also small, can be said to be the most ideal material. The second choice: bentonite – solid, light, and can be fused with the autologous bone, feel form are good. Third choice: injectable fillers, autologous fat or hyaluronic acid, this is only suitable for candidates with very slight depression in the middle of the face, that is, fillers for nasolabial folds and the like. Nasal base filler incision approach depends on the doctor’s technique, some of the nasal wing side, some intraoral into, each doctor has their own good surgery, listen to the doctor’s right.