It appears that the excess margin of the provisional (between arrowheads in Fig.9) should be trimmed for better oral hygiene maintenance.

The upward arrowheads point to the margin of the implant/abutment, while the downward ones point to the margin used to cover the socket opening.  When the socket heals (shrinks), the outside margin is no longer useful.

Shorter Maxillary Immediate Implant

Xin Wei, DDS, PhD, MS 1st edition 07/04/2015, last revision 07/04/2015