In fact, the patient returns 4 months postop.  The provisional perforates at the occlusal surface, but there appears to be new bone formation in the mesial socket (Fig.10 *).  Remember no bone graft being placed in the mesial socket (instead Osteogen plug being used).  When the abutment is being changed to smaller one (6.8x5.5(2) mm), the gingiva around the implant looks healthy, although recessive (Fig.11,12).

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Xin Wei, DDS, PhD, MS 1st edition 05/11/2016, last revision 12/25/2018