The dimension and density of the sockets will be measured 4-6 months later to determine whether rhPDGF-BB facilitates bone healing.  In fact the density of the bone graft 6 months postop remains the same as immediate postop, similar to the native bone as well (Fig.5).

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Xin Wei, DDS, PhD, MS 1st edition 03/18/2020, last revision 09/29/2020