Osteotomy is conducted at #15 according to drill sequence (including the depth of the last drill (no tapping)), but the 5x10 mm implant is placed ~ 1mm shy of the planned depth (Fig.1 (red line: sinus floor)).  Clinically the implant is ~ 2 and 4 mm subgingival buccal and palatal, respectively.

Not Deep Enough Next Xin Wei, DDS, PhD, MS 1st edition 05/11/2018, last revision 10/08/2018