I Overview Immediate implants are implants that are placed in the socket at the same time as the tooth is extracted. Traditionally, the implant is placed after the tooth has been extracted and the socket has healed for 3-6 months. In 1978, some scholars reported for the first time that implants were placed in freshly extracted sockets. In recent years, with the improvement of implant surgery technology and the continuous improvement of the performance of bone grafting materials, immediate implantation has become a technique with good predictability of efficacy and can be used as one of the routine means of clinical treatment of oral implants. The implant can be considered for immediate implantation if there is no acute inflammation in the implant area, if the implant can obtain good initial stability, and if good bone reconstruction can be obtained through bone-guided regeneration. (1) Traumatic tooth loss without significant bone loss; (2) Endodontically diseased teeth that cannot be treated; (3) Periodontally diseased teeth that cannot be retained; (4) Root fracture teeth that need to be extracted. Contraindications: (1) acute inflammatory period of periapical and periodontal disease; (2) periapical soft tissue cellulitis; (3) anatomical position of the inferior alveolar nerve canal, maxillary sinus and nasal floor restricts the initial stability of the implant. Advantages and disadvantages of immediate implants Advantages: reduction of the number of surgeries and shortening of the treatment period; maximum use of bone for implant placement Disadvantages: extraction trauma is more difficult than other types of implants to achieve initial mouth closure. The difference in size between the implant and the extraction socket makes it more difficult to obtain good initial stability than other types of implants. 4. Surgical steps: 1. Minimally invasive extraction and extraction wound treatment. 2. 2. Preparation of the cavity and placement of the implant. 3. Closure of the incision. 4. Post-operative care. V. Prognosis: Immediate implantation should be performed by experienced and skilled surgeons in cases of single tooth extraction with low risk. A risk assessment should be performed before case selection. Immediate implantation is not recommended in patients with multiple tooth extractions, smoking, or acute infection in the extraction area. Immediate implants are mostly carried out in the anterior region or premolar region, and the aesthetic results are better in patients with low smile line, thick gingival type, and thicker bone plate on the lip side. 6 Precautions: 1. The same precautions as after conventional implant surgery, or follow the doctor’s advice; 2. A warm and cool diet after surgery, forbidden to eat too hard food; 3. Transitional dentures can be worn only after adjustment by the physician; 4. Three days after surgery, saliva mixed with blood is normal. Early postoperative period (one week) local swelling and skin color change are normal.