When the non-osteointegrated implant is removed, the sinus membrane is found to have been perforated.  There is a history of clear discharge immediately postop ~ 1 year ago.  Against the common wisdom, a 5x10 mm dummy implant is inserted with intention to correct the trajectory and 50 Ncm (Fig.1).

Re-Placement with Sinus Membrane Perforation Next Xin Wei, DDS, PhD, MS 1st edition 06/01/2018, last revision 09/30/2018