At present, there are mainly three types of clinical restorations after tooth loss: removable dentures; fixed porcelain teeth; dental implants, etc. The characteristics of the three types of restorative dentures are as follows: wide range of indications, almost applicable to all types of missing teeth in the lost teeth area where there is no abnormality in the bone quality. Narrow indications, the neighboring teeth on both sides are unhealthy, the number of missing teeth is too much, the most end of the missing teeth can not do porcelain bridge repair. Wide indications, almost applicable to all types of missing teeth. Method of operation An independent artificial tooth root is placed in the alveolar bone of the missing tooth area The neighboring teeth on both sides need to be ground (the tooth tissue is ground away, irreversible), and the number of natural teeth that need to be ground away will depend on the number of missing teeth. A small amount of remaining natural teeth to be ground Bite force Similar bite force to natural teeth. There is no root and relies on the neighboring teeth on either side to carry the force, which is relatively weak, especially if there are a large number of missing teeth. Relies on the oral mucosa and part of the neighboring teeth to withstand the force, can not chew harder and tougher food. Volume Small and comfortable Small and comfortable Small and comfortable Small and comfortable Large volume, more obvious foreign body sensation. Treatment cost High price, usually costs 7000-10000 RMB. Medium Price, ranging from$300 to$3000 for a single tooth. Inexpensive, usually not more than$100 per tooth Treatment period 3 to 6 months 1-2 weeks 1-2 weeks Post-maintenance As it is as independent as a natural tooth, repair or maintenance operations can be performed on a single dental implant. It is more difficult to perform repair or maintenance on a single tooth. If problems occur, the entire porcelain bridge will need to be removed and rebuilt. It can be removed and put in at any time, making maintenance easier.