Inclusion Criteria:  ≥18 years old and in good health; The maxillary incisor that cannot be retained due to non-periodontitis; The buccal bone plate is complete; No acute infection; The extraction socket have at least 3-5 mm apical bone.  Exclusion Criteria:  General contraindications of oral implant surgery (such as immunodeficiency, long-term use of corticosteroids); Treatments or diseases that may affect bone tissue metabolism (for example, taking bisphosphonates or receiving local radiotherapy); Periodontitis history or uncontrolled periodontitis. Bleeding of probing (BOP) positive site ≥ 10%, or probing depth (PD) ≥ 4mm; Heavy smokers or previous heavy smoking history (quit smoking time <5 years or> 20 cigarettes per day); Refuse to participate in this trial.