Depth of osteotomy is controlled with IS drill stoppers.  After sequential osteotomy free hand, a 5x11 mm Tatum tapered tap is used to break through the sinus floor (Fig.5) and later sinus lift is conducted with the tap, a 5x11 mm implant and Vanilla allograft (Fig.6 *).  When the implant is placed deeper (Fig.7 arrow), more bone condensation and sinus lift occur (arrowheads).  Allograft is packed in the remaining socket gaps (Fig.9 *).

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Xin Wei, DDS, PhD, MS 1st edition 03/04/2019, last revision 08/15/2019