What is cranial repair surgery? When I was browsing some information about skull defects in patients on the web two days ago, I found that many people do not understand the concept of skull repair surgery and have many misconceptions about this surgery. As a doctor, it is important for me to introduce this procedure to you. The biggest misconception about cranial repair surgery that I see on the web is that it is possible to fill a high cranial vault. It is true that high cranial vault is now a new aesthetic standard and many women are proud of having a superior cranial vault, so many women ask in the comments if this procedure can fill in a high cranial vault and make their face smaller. Although cranial repair can be considered as a cosmetic surgery, the main purpose is to return patients with cranial defects due to trauma or other conditions to a normal life. This procedure is not recommended for those who have a good skull shape. The material used in the skull filling surgery that the girls want to do is actually bone cement, which is a plastic surgery in Korea. The cranial repair surgery, such as bone cement has long been eliminated, using the more superior performance of titanium mesh and polyether ether ketone material for repair. Titanium mesh material, or titanium alloy material. It is one of the materials that are currently being used more frequently. It has the advantage of being inexpensive and cost-effective. Non-corrosive and strong. It can be forged and the cosmetic effect is better compared to bone cement and so on. But at the same time, there are certain risks, first of all, the problem of its metal material causes it to have higher thermal conductivity and poor thermal insulation, which may cause sensitivity to hot and cold reactions, and also the surgery of skull repair with titanium mesh is an overlay surgery, which is more irritating to the scalp. It is also less histocompatible and less resistant to compression, so it results in it not being strong enough and easily deformed by force. There are also metallic artifacts that may interfere with medical examinations, such as CT resonance, causing diagnostic interference. Polyetheretherketone material, also known as peek material. It is the most advanced material for treating skull defects. It is also one of the most suitable materials to be selected for skull repair surgery. Polyetheretherketone is a polymer material comparable to the body’s own cranial bone. It is more biocompatible and. It is strong but very elastic and tough, more resistant to impact and better protection. Unlike titanium mesh surgery, skull repair surgery with polyetheretheretherketone is an embedded surgery and more comfortable. Moreover, compared with titanium mesh material polyetheretherketone material basically does not conduct heat and has strong insulation properties. It avoids the sensitivity to hot and cold reactions caused by cranial repair surgery with titanium mesh. There is also no postoperative infection and no rejection. Rays can be transmitted without forming artifacts. A more important point is that polyetheretherketone is a material that can be plasticized in three dimensions and can be customized for three-dimensional reconstruction according to the different needs of the patient. Based on the patient’s brain CT data, the design is made according to the 3D printing technology to produce a cranial bone that matches the bone window perfectly after the repair and is basically indistinguishable from the own cranial bone. However, there are not many hospitals that do skull repair by peek at present. It also requires a high level of skill and professionalism from the doctors who do peek skull repair in China. Therefore, if there are patients who need this treatment, it is recommended to choose a more authoritative hospital.