To reduce the gap and periimplantitis, a 5x11 mm IBS implant is placed with insertion torque > 50 Ncm after further osteotomy using Magic Drills (Fig.5).  In fact the implant is placed too deep (as compared to Fig.3).  Following placement of 5.5x4(4) mm abutment, a splinted provisional is fabricated at #3 and 4.  An abutment with 5 or 6 mm cuff is needed.  ^: sinus floor.

The peri-implant gaps (Fig.5 *) seem to disappear (Fig.6 (3 months postop)) with the help of bone graft.

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Xin Wei, DDS, PhD, MS 1st edition 03/23/2017, last revision 11/25/2018