With the 2nd redirection (Fig.6 (4.5 mm tap)), a 4.5x12 mm implant is placed with 50 Ncm and sinus lift (Fig.7 black *); bone graft is placed with emphasis on the palatal defect (white *).  As usual, an immediate provisional is fabricated.   In fact the abutment may be not completely seated because of contact with the mesial crest.  Prepare anesthetic and 5.5 mm profile drill.  Take parallel BW or PA.  Take occlusal photos to show no buccal or mesiopalatal atrophy.

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Xin Wei, DDS, PhD, MS 1st edition 02/19/2019, last revision 03/08/2020