There is no bone loss at #23, 25 and 27 sites 2.5 years post cementation (Fig.12-15), although the trajectory of the implants could be improved by using surgical guide (Fig.16-18).  The implant at #27 almost perforates the lingual plate (Fig.16 <).

Narrow Implant Last Next Xin Wei, DDS, PhD, MS 1st edition 05/12/2020, last revision 05/12/2020