At the time of surgery, there are no 5x10 mm implants in the office for the sites of #14 and 15.  Reanalysis of CT shows that there is enough bone for 11.5 mm implants.  Before implant placement (Fig.1), there is no perforation of the sinus floor, as shown by probing and nasal blowing test.

Length Last Next Xin Wei, DDS, PhD, MS 1st edition 01/29/2019, last revision 01/30/2019