Application of CGF-viscous bone in bone augmentation surgery: A randomized controlled study

INTERVENTION: Trial Group:CGF‐viscous bone used for bone augmentation after tooth loss and simultaneous implant placement;Control Group:Bio‐Oss bone graft particles used for bone augmentation after tooth loss and simultaneous implant placement; CONDITION: Defect of dentition PRIMARY OUTCOME: Three‐dimensional bone changes in CBCT before surgery, immediately after surgery, 6 months after surgery and during denture restoration.; SECONDARY OUTCOME: The healing condition of the soft tissue two weeks after the operation.;The reaction degrees of patients after two types of bone grafting surgeries were analyzed through visual analogue scales.; INCLUSION CRITERIA: 1. Patients presenting with at least one missing anterior or posterior tooth in either the maxilla or mandible; 2. Patients exhibiting insufficient alveolar ridge width or height, or clinically evident buccal contour deficiency; 3. Patients who have successfully completed delivery and functional integration of the definitive prosthesis; 4. Patients demonstrating satisfactory oral hygiene and periodontal status, defined as absence of bleeding on probing (BOP) at all sites and probing depth (PD) <= 4 mm.