After finishing osteotomy with IS guide and Tatum Tapered tap 5x14 mm for 11 mm (gingival level) free hand, a 5x11 mm Tatum implant is placed at #18 with >15 Ncm (Fig.1 (underprep should have been done)).  Red line: superior border of Inferior Alveolar Canal.  The implant at 2.5 months postop (Fig.4) seems ok with removal of the cover screw and placement of a healing cuff.  Half month later, the implant is tender associated with unipost placement.  The healing abutment returns.  Osteointegration seems to occur at #18 seven months postop; there is no tenderness when a 4.5x3 mm abutment is placed (Fig.7).  Provisional crowns are fabricated at #15 and 18 for progressive loading.  Switch Last Next Xin Wei, DDS, PhD, MS 1st edition 02/24/2020, last revision 02/25/2020