The nervous patient is not pleased with lengthened procedure and pressure from sinus lift in spite of seemingly sufficient anesthesia (Fig.3 >).  Later the implant is placed deeper ~ .5 mm for restoration.  The sinus floor appears to be thickened (Fig.4 > with apparently increased bone density), while the original sinus floor becomes indistinct 3.5 months postop.  The unipost cannot be removed for cementation.

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Xin Wei, DDS, PhD, MS 1st edition 12/14/2019, last revision 02/16/2020