Dental implant roots and abutments are generally not fitted together. The implant, i.e. the root, is first placed into the alveolar bone, and then the abutment is fitted after a period of recovery. However, immediate implantation is possible if the indications are met. Dental implants are generally divided into phase I and phase II implants. Phase I implants are implants, which are inserted into the missing teeth through local anesthesia, and the abutments are installed in phase II after the implants are combined with the alveolar bone. Generally speaking, the implant should be observed for about three months after the implant is inserted, depending on the bone combination situation, whether it is possible to do the second-phase installation of the abutment, after the implant and the alveolar bone are tightly fitted, you can start to install the abutment, the implant abutment is installed on the implant platform, and it will be extended to the oral cavity, used for connecting, supporting, and retaining restorations, and then the installation of dental crowns. After dental implant surgery, we should pay attention to oral hygiene, maintain a light diet, avoid smoking and alcohol, pay attention to rest, avoid strenuous exercise, regular review.