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Two implants (Fig.4: 5.9x10, 5.9x8 mm) are not seated completely due to high bone density. Bone graft (*) is placed to cover the denuded threads. Long abutment cuffs (4.5 and 3 mm) have to be used because of thick gingiva.
There appears to have bone growth mesial to #30 implant 5 months postop (Fig.11 *).
The final restorations are delivered 9 months postop (Fig.12, temp bond). It appears that the most coronal threads of the implants are uncovered by the bone. These two implants should have been placed deeper (all of the threads buried) to reduce possibility of periimplantitis. Shorter implants should have been chosen.
Xin Wei, DDS, PhD, MS 1st edition 01/11/2016, last revision 05/18/2016