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The sockets heal with preservation of the septum (Fig.4: S), while there is formation of the cortical plate on the top of the ridge (Fig.5: ^). 颊侧骨板（右手）和牙槽嵴顶端（图五（CT冠状切面）：箭头）骨皮质形成。
Xin Wei, DDS, PhD, MS 1st edition 11/11/2020, last revision 11/11/2020