Further torque (Fig.5) results in failure of the engagement of the implant driver to the implant well (arrowhead: the apical end of the osteotomy).  There is a remote possibility that the newly formed buccal plate is fractured.

Fortunately the distal crest is at the same level of the implant plateau.  With bone graft (*: autogenous bone + Osteogen), the implant threads may not be exposed.  Because of the incomplete implant seating, a shorter abutment is used (A: 7.8x4 (4.5) mm).

Three months postop, the 1st 2 coronal threads of the implant appear to be covered by low density bone, while the apical radiodensity increases (Fig.9, as compared to arrowhead in Fig.5).

Incomplete Seating

Xin Wei, DDS, PhD, MS 1st edition 04/13/2015, last revision 08/03/2015