Nasal base is a relatively vague concept, which can be roughly defined as the basal part of the nose (mainly the external nose, the part of the nose that can be seen from the outside) connected to the upper lip, as introduced on some websites: In Korea, nasal base filler surgery is also known as rich and noble surgery or noble surgery, the indications: people with a sunken middle face (nasal base depression), the problem of facial depression (nasal base depression) can not be improved simply by rhinoplasty. Only through nasal base filling surgery can we achieve another satisfactory effect and make the face look fuller. Operation method: Nowadays, there are two main practices: First, two small openings are made in the mouth to separate the nasal base, and then a triangular-shaped prosthesis is put in to lift up the nasal base, this method is more commonly used in Korea; Second, a through incision is made at the lateral edge of the nostril (within the nasal column), the upper alveolar bone is separated from the surface, and then a swallow-shaped prosthesis is put under the nasal column, this method is more commonly used in the United States, and it is necessary to choose between the two methods according to different situations. This method is more commonly used in the United States and requires a choice of two methods depending on the situation. From the perspective of orthognathic surgery, the so-called nasal base is actually the bony part that extends to the sides with the anterior nasal crest as the center. In other words, the so-called nasal base filling is actually equivalent to the anterior displacement of the bone blocks on both sides with the anterior nasal crest as the center, and the actual effect is a modification of the maxillary lefort osteotomy anterior migration. For normal occlusion of the upper and lower jaw teeth relationship, but only the upper jaw is underdeveloped, lefort osteotomy anterior migration is obviously more traumatic and involves delayed functional recovery of patients with simultaneous upper and lower jaw surgery, therefore, there is a certain market for nasal base surgery . The individual classification of nasal base surgery and the principles of treatment (by X-ray cephalometric lateral film measurement tool) 1, X-ray cephalometric lateral film measurement shows that the maxilla is underdeveloped: the use of the anterior nasal crest as the center, extending to both sides of the prosthesis filling, which is the more common practice in the United States, 2, X-ray cephalometric lateral film measurement shows that the maxillary alveolar process is overdeveloped, and caused by the lateral posterior nasal depression below: the use of both sides of the moon type The purpose of filling the prosthesis is to buffer the steps caused by the maxillary alveolar bone overdevelopment and to buffer the right-angle steps into a certain slope. However, for severe deformities, especially those with a low forehead, the best method is to push back the anterior maxillary osteotomy method, which is more standardized. Note that the height of the prosthesis should not exceed the upper edge of the nasal sulcus, which is the more common practice in Korea: bilateral nasal base low + nasal tip elevation + bilateral mandibular margin resection + chin augmentation. For this type, the surgery of nasal tip, nasal base and chin augmentation is basically similar to the surgery of osteotomy of the anterior part of the upper jaw and the lower arch of the lower front teeth after osteotomy. 3, for non-bone problems, such as facial laxity caused by the deepening of the nasolabial folds, nasal base surgery is a contraindication. Most of the unsatisfied patients in my previous clinical practice are of this type. The nasal base surgery will not only fail to relieve the symptoms, but will also deepen the tear trough below the eye bags. Note: 1, nasal base surgery is an adjunct to facial contouring surgery, and must be grasped for the right indications. 2, for the second type of patients, remember to control the scope of the nasal base pad, otherwise it will form the typical “lion face”. 3.After nasal base surgery, the nostrils of patients will generally open up and appear larger, so nasal base is not a separate surgery, but must be performed simultaneously with rhinoplasty.