After implant nailing, there is a second phase of treatment, which includes the steps of implant abutment connection, taking impressions, preparing the upper crown, and wearing the tooth. 1. Implant abutment connection: After 4 to 6 months of implant nailing, when the implant is osseointegrated with the alveolar bone, a second surgery is performed to place the healing abutment. 2. Making impressions: About 20 days after the installation of the healing abutment, a silicone rubber model can be made or a model can be made by computerized digital scanning technology. 3. Preparation of upper crown: After taking the impression, the impression is sent to the processing plant for the fabrication of the connecting abutment and upper crown. 4. Dentures: After the abutments and crowns are processed, the abutments and crowns are installed, the occlusion is adjusted, and the dental implants are installed. After the completion of the dental implant, oral hygiene should be maintained in daily life, rinsing diligently and brushing more often. The dental implant should be rechecked every 3 to 6 months, and any problems found should be dealt with in a timely manner to prolong the use of the dental implant.