There is no bone loss 4.5 years post cementation (Fig.22).  上前牙舌侧开口，基台短，牙冠容易脱落，牙槽嵴缺损逐渐修复，密度提高。

Repair Buccal Defect Internally Last Next

Xin Wei, DDS, PhD, MS 1st edition 05/15/2021, last revision 06/13/2021