Immediate implants are implants that are placed at the same time after tooth extraction, while traditional implants are placed 3-6 months after tooth extraction. Immediate implantation is mainly used for anterior teeth, generally single-rooted teeth and teeth with root fracture caused by trauma are most suitable for immediate implantation. The advantages of immediate implantation: 1, no need to wait for the healing of the extraction wound, which shortens the treatment time; 2, traditional implantation is easy to resorb the alveolar bone during the healing process 3 months after extraction, especially the labial bone plate after the extraction of the anterior teeth, immediate implantation can effectively prevent the absorption of the alveolar ridge, avoiding the disuse atrophy due to the extraction of teeth and minimizing the bone loss; 3, it can preserve the soft tissue to a greater extent, especially the gingival papilla. The preservation of the gingival papilla can reduce the “black triangle” (a triangle with the contact point of two teeth as the apex and the flesh of the tooth as the bottom edge, mainly caused by gingival atrophy), increase the aesthetic appearance while obtaining the most soft tissue support, and preserve the height and width of the alveolar bone. Disadvantages: 1. Since the socket after extraction is larger than the diameter of the implant, the space between the implant and the socket often needs to be filled with artificial bone powder and periosteum, which increases the cost. 2. Individuals recommend immediate or early implantation for anterior teeth and traditional implantation for posterior teeth.