1, mobile maintenance: the feature is that it can be taken down and cleaned every day, with obvious disadvantages. Made of hard plastic, the chewing effect may not be so good;
2. Fixed restoration: when a small number of teeth are missing, they can be restored through adjacent abutment teeth, which has the advantage of being fixed in the patient's mouth without taking them out. The shortcomings are also obvious. When one tooth is missing, it may be necessary to damage two adjacent teeth for preparation and then repair them as a fixed bridge. Restoring one tooth may damage two adjacent teeth;
3. Implant restoration: it is the most popular way in clinic at present. Implants are drilled in the jaw according to the characteristics of the jaw, and then repaired after the implant and jaw are completely healed. This dental inlay method does not need to damage adjacent teeth, and the direction and mode of force are very similar to those of natural teeth. It is the most popular dental inlay method at present.