Fig.2 shows the socket after extraction.  A series of osteotomes will be used to push the whole septum (*, not just the sinus floor) apically so that a longer implant is placed and the apical end of the implant will be engaged to the side of the individual root sockets (arrowheads).

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Xin Wei, DDS, PhD, MS 1st edition 05/18/2013, last revision 05/18/2014