Incision reveals that the ridge at #9 and 11 is narrower than expected.  A 3x14 mm 15º 1 piece implant is placed at the site of #9, while a 3x17 mm straight 1-piece one is placed at #11 (Fig.1).  The implants are intentionally placed palatally, since the thick palatal gingiva seems to be able to prevent periimplantitis.

Allograft will be placed palatal to #9 and 11 implants and buccal to #11 implant.  There is mild green stick fracture of the buccal plate while the straight 1-piece implant is being placed at #11.  Osteogen membrane is used to cover the bone graft before suturing.

Angled vs. Straight 1-Piece Implants Next Xin Wei, DDS, PhD, MS 1st edition 04/15/2017, last revision 08/05/2018