The crown is recemented 6 months post cementation (dislodgement probably due to short abutment); there is a residual cement (Fig.17 <), which is removed (Fig.18). 

Plug for Sinus Lift Last  1st Year Course 1 2

Xin Wei, DDS, PhD, MS 1st edition 05/16/2017, last revision 04/02/2018