Facial rejuvenation has always been the biggest treatment project in plastic surgery. One of the most frequently consulted items is the double chin, which obviously makes people feel that the outline of the face is not clear and makes people feel young. The cause of double chin Many guests often mention the problem of double chin when consulting in outpatient clinic. Most of their complaints are: "Dr. Chen, I have two pieces of meat in my chin, the outline is not obvious, and my neck feels thicker and shorter." Double chins don't really have two chins, but fat accumulates or is squeezed under the original chin, resulting in the visual feeling of having two chins. This is the so-called narrow double chin; The broad sense of double chin includes all the problems from chin to mandibular angle, including fat and lines. There are two reasons for the formation of double chin, one is congenital and the other is acquired. Congenital diseases are mostly due to congenital chin dysplasia, which leads to short chin or short neck, which is easy to cause fat hernia in the neck, so there will be problems of double chin and unclear outline. There are many reasons for the formation of acquired double chin, including neck fat accumulation caused by obesity, skin relaxation after aging, poor muscle strength, fat hernia and so on. Several methods to deal with double chin These problems can be divided into surgical methods and non-surgical methods. With regard to fat accumulation, Dr. Chen Shidong, Chairman of the Cosmetic Medicine Branch of Taiwan Province Medical Association and Director of Aesthetic Surgery Education, said that we can remove fat, and simple liposuction can easily cause skin relaxation. Laser liposuction can reduce fat and firm skin at the same time, which is a good choice; There are many non-surgical methods, including in vitro ultrasonic fat dissolution, microwave radio frequency fat reduction, PDO egg daily fat reduction, and even fat reduction needles. Ultrasound in vitro lipolysis is limited by the thin neck skin, so * * vibration mode is more suitable than focused ultrasound in vitro lipolysis; Radio frequency fat reduction is to change the permeability of fat cells and make them shrink by microwave. PDO protein line is used to reduce fat, and fat cells become smaller through biological effect; Fat-reducing needles use chemicals to destroy fat cells. This kind of destruction is not limited to fat cells, but muscle cell membranes may also be affected. This part of the injection of lipid-lowering needles is relatively risky. Generally speaking, non-surgical methods can only achieve partial results, even if a complete course of treatment is done, the effect may be less than half of the surgical effect, so when designing a treatment plan for patients, we must clearly inform customers of the possible effects and possible side effects. The problem of double chin caused by short neck is basically equivalent to the situation of fat accumulation hernia. Both surgical and non-surgical methods can be implemented. Only after coordination with patients can we make a treatment plan acceptable to patients. The problem of short chin can be improved by adding chin. Whether it is injecting filler, surgically implanting prosthesis or osteotomy, it is a feasible scheme. Using these treatments, we can reshape the patient's face, change the coordination with the five senses, and make the guest's exquisiteness and proportion more perfect. Is the therapeutic effect of acquired double chin always unsatisfactory? Acquired double chin involves many problems, including skin aging and relaxation, neck muscle weakness in SMAS layer and neck fat hernia. The double chin caused by this aging is different from that caused by simple fat accumulation. The effect of trying to solve these three problems simultaneously by non-surgical methods is not obvious. Although the ultrasonic scalpel has a good effect on the contour line, it is only limited to the tight SMAS layer, and it is not very effective for fat hernia and skin relaxation. PDO protein line can * * collagen and reduce fat, but its supporting effect on relaxing muscle remodeling is limited; Radiofrequency fat reduction is effective in tightening superficial skin and reducing fat, but it can't do anything about muscle relaxation, so the non-surgical method is not satisfied with the double chin caused by acquired aging. The traditional surgery is to remove fat, partially remove the digastric muscle, restore the support of platysma muscle and trim the redundant flap. Although this kind of operation is effective, it is destructive and has many complications. Laser lipolysis is another new method to treat acquired double chin. Laser energy can destroy prominent fat, shrink tight superficial skin, reduce flabby skin flap and increase the support of platysma. Moreover, the injuries and complications of surgery are less than those of traditional surgery, which is the biggest advantage of laser lipolysis surgery. Author/Chen Shidong. Finishing//Ethel .. picture provision/big picture subscription health Aloha audio-visual channel, easier to read health knowledge, pay attention to your health every day! Line @ ID: @:/beauty/article/24595/Key words: Medical Beauty Fashion No.65438+February, double chin, fat accumulation, loose skin, Chen Shidong, B.