Multicenter Clinical Study on the Efficacy and Esthetic Outcomes of Immediate Implant Placement Using the Socket-Shield Technique Versus Conventional Immediate Implantation in the Anterior Maxillary Esthetic Zone

Inclusion Criteria: * Age: 18 to 65 years old; * Good general health, able to tolerate oral implant surgery, with no absolute surgical contraindications (ASA I or II); * Clinical diagnosis of an unrestorable maxillary anterior tooth, suitable for immediate implant placement; ④ Periodontal tissues are basically healthy, with no obvious active infection in the apical area; ⑤ No obvious root fracture on the labial/buccal side or severe mobility preoperatively; radiographic evaluation confirms that the bone volume in the surgical site meets the requirements of the protocol; ⑥ Willing to accept randomization and standardized follow-up, and has signed the Informed Consent Form; ⑦ Able to provide complete intraoral photographs, CBCT (Cone Beam Computed Tomography) scans, and follow-up data. Exclusion Criteria: * Presence of severe systemic diseases that may affect the surgery or healing, or current use of related medications such as bisphosphonates; * Severe periodontal disease or uncontrolled poor oral hygiene; * Obvious inflammation in the apical area of the affected tooth, or pathological root resorption; ④ Abnormal occlusal relationship, obvious bruxism, or inability to establish a stable restorative occlusion; * Pregnancy or lactation, or unsuitability for radiographic examination; ⑥ History of previous surgery or radiotherapy affecting the bone volume or soft tissues in the target area, which the investigator deems would seriously interfere with the evaluation; ⑦ Expected inability to complete the follow-up, or refusal to comply with the study requirements.