植骨修复牙周骨缺损是人们多年寻求的方法,也是牙周病治疗中研究的重要课题之一。近年来,有人试图通过整复性牙周手术以修复病变部分的牙周骨缺损。由于冻干骨具有操作简单、骨源丰富、减少患者取骨痛苦及抗原性低 Bone repairing periodontal bone defect is a method sought by people for many years and is also one of the important topics in the research of periodontal disease treatment. In recent years, attempts have been made to repair periodontal bone defects in diseased parts through reconstructive periodontal surgery. As the freeze-dried bone has the advantages of simple operation, rich bone source, less bone pain and low antigenicity