Fig.12 (palatal view): The implant at #15 should have been placed mesially.
In fact the crown at #15 is screw retained. After cementation of the crowns, the one at #15 is removed. The latter makes it easy to remove the cement around the one at #14, particularly distal.
Conjoined Provisional Last Next Xin Wei, DDS, PhD, MS 1st edition 12/14/2016, last revision 12/16/2018