If long-term missing teeth are ignored, the jawbone at the site of loss will shrink and the shape of adjacent teeth will be greatly affected, eventually leading to permanent deformation of the dental bed, affecting not only the function but also the appearance. At this time, it is very important to choose the right restorative dental treatment, currently the more common domestic restoration of missing teeth are three main options – 1, the most expensive: implant denture Implant denture is a special fixed denture, also known as artificial dental implants, not really planted on the natural teeth, but through the medical way, the high compatibility with human bone The titanium or ceramic material is precisely designed and manufactured into a cylinder or other shape similar to the root of a tooth, and the implant (artificial root) is surgically implanted into the alveolar bone of the missing tooth area. Dental implants have been recognized by the dentistry community as the preferred restoration method for missing teeth because they are not destructive to adjacent teeth. Since artificial teeth are deeply implanted in the bone, they can withstand normal chewing forces and are almost identical to natural teeth in function and aesthetics, therefore, they are called the third set of human teeth. If the economic condition allows, and the oral and systemic conditions allow (note: not everyone is suitable for implant restoration), implant prosthesis is preferred for tooth loss. 2, the most popular: fixed denture is commonly known as porcelain teeth (but not all materials are porcelain), wearing braces, etc.. As a traditional restoration program for missing teeth, it is accepted by most people in terms of comfort and price. It is usually an artificial tooth that uses adjacent natural teeth to anchor and support the missing tooth site. It was the most popular restoration method before the advent of dental implants, and is an irreversible and destructive restoration because it requires the removal of a certain amount of healthy teeth on both sides of the missing tooth area. It is an irreversible and destructive restoration that requires the removal of a certain amount of healthy teeth on both sides of the missing tooth. Nowadays, it is mainly used for restoration when the tooth is partially missing. In the case of complete tooth loss, if price and comfort are both important, you can consider this restoration method, where the denture is fixed in the mouth and the use effect is close to that of natural teeth. Different denture materials can be chosen according to economic conditions and aesthetic needs. 3, the most traditional: movable denture The name implies that the dentures can be removed and worn, is currently the most common restoration method chosen by the elderly or multiple missing teeth. The removable denture uses the remaining natural teeth or mucosa as support, and is fixed to the remaining natural teeth by means of clasps, using the abutment to keep the denture in the proper position to perform chewing functions, requiring a small amount of grinding of healthy teeth. The advantage of removable teeth is that they are the cheapest, but they have many drawbacks compared to the first two fixed restorations, such as poor functional recovery, obvious foreign body sensation, short life span and inconvenient use. Depending on the material, there are also different bracket materials for removable dentures. With the development of technology, the combined application with implant restoration can make the movable denture restoration of full or partial tooth loss achieve more stable results. Conventional movable denture restoration is mainly used for low economic ability, oral and systemic conditions not suitable for fixed restoration, and transitional restoration (such as adolescent missing teeth, missing teeth due to a long oral treatment process need to temporarily restore aesthetics, occlusal function adjustment, etc.).