Compared to the alveolar bone just after tooth extraction, the height of implanted nHA alveolar ridge kept well and reconstructed perfectly.

• 两组比较，12周后实验组X线片见牙槽窝处的X线阻射影与周围牙槽骨密度相近，界限不清，恢复的牙槽嵴与周围基本平齐，牙槽高度恢复良好。