After extraction, there is ~7 and 3 mm loss of the buccal and palatal plates, respectively.  Osteotomy is initiated with a 2 mm pilot drill in 6 mm native bone (Fig.4).  After using 2.5 mm reamer for 3 mm (underprep), a 3.8x11.5 mm is placed with ~ 35 Ncm, followed by placement of a 4.5x15° (3 mm A) angled abutment (Fig.5).  Clinically, the implant/abutment complex is buccally positioned.  After removal of the abutment, the implant is backed up and re-directed palatally.  When the angled abutment is re-inserted, the position of the implant/abutment complex is more favorable for restoration. 

Nasal Floor Lift Last Next Xin Wei, DDS, PhD, MS 1st edition 06/27/2016, last revision 09/16/2020