In fact the implant at #6 is placed distal coronally.  It is difficult to restore.  The apex of the tooth #5 does not curve mesially.  S mini implants are not chosen at #7 or 10, because of its 10 mm long abutment, as compared to 5 mm of the 1-piece implants shown in Fig.1,2.

Restoration-Oriented Next Xin Wei, DDS, PhD, MS 1st edition 11/16/2018, last revision 11/17/2018