Previous gap  (Fig.10 <) is closed by the 2nd round of allograft (*).  The implant threads appear to be covered by the bone graft 3.5 months postop (Fig.11). The bone density seems to increase 5 months postop, i.e., immediately post cementation (Fig.12) and 10 months postop (5 months post cementation (after retightening abutment), Fig.13 (*)).  Periimplantitis develops mesiobuccally, consistent with bone loss 1 year 7 months post cementation (Fig.14 *); the implant seems to have been buccally placed.  It should have been placed more distolingual and deeper with a guide!

Osteotomy Depth Control Last Next Redo

Xin Wei, DDS, PhD, MS 1st edition 10/25/2019, last revision 07/01/2020