Sinus lift, intra-operative minor complication (treatment and follow up)

Treatment Plan:
-Extraction of #15 and dental implant placement on #15 and #16.
-Fabrication of a new PFM crown on #17.

Sequence of treatment:
-Temporary FPD #15-17
-Sinus graft with lateral window on site #16

    6 months later
-Extraction of #15 and immediate implant placement
-Implant placement on #16

   2-3 months later
-Fabrication of PFM crown #17,
-Fabrication of implant crowns for #15 and #16

Critical points on treatment:

Why not to remove #15 at the time of the sinus graft surgery?
In order to minimize the amount of time that the patient will be without teeth on that side (from 9 to 3 months).

#16 implant size choice: 4.2mm diameter
Why?
The crown size of this molar is small compared to an average first molar size. It is actually similar in size to a premolar tooth. However, the forces that this tooth will receive are equal to a molar size tooth.

Do you have any question about this case?. Feel free to comment.

Best,
Ioannis