When the implant is just placed (I in Fig.3), there are empty spaces between implant threads (arrowhead).  Five months later, bone grows into the threads of the implant (Fig.4: arrowhead), suggesting osteointegration.  The density of sockets #1 and 2 is higher than that in Fig.3. 

A crown is cemented 2 weeks later (Fig.5: C).  Six and one half months post cementation, the patient returns for follow-up. Bone trabecular patterns within the area indicated by arrowheads are consistent with mastication function of the implant (Fig.6).

Bone density increases 6 year post cementation (Fig.8).

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Xin Wei, DDS, PhD, MS 1st edition 05/24/2011, last revision 05/19/2018