When the surgical guide is pressed hard at the 1st molar area, the guide appears to sink down ~ 1 mm.  The last drill and a 5x10 mm implant are placed as the guide is being pressed hard (Fig.1).  The implant appears placed deeper than the design.

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Xin Wei, DDS, PhD, MS 1st edition 06/19/2018, last revision 04/14/2019