Since the implant (Fig.7 I) thread exposure is within bone (B) boundary (Fig.8 red dashed line), bone graft with PRF should be able to take care of periimplantitis (A: abutment).   To prevent periimplantitis in similar situation, the immediate implant should be placed deep (not necessarily long, 18 mm) and narrower (3.5 mm instead of 3.8 mm).  The defective buccal plate should be repaired with sticky bone and collagen membrane with incision if necessary.

Boundary Last Next

Xin Wei, DDS, PhD, MS 1st edition 06/13/2019, last revision 06/14/2019