The same is a 4x11 mm IBS implant (Fig.6, >55 Ncm). The lingual button in the mesial of #31 is then removed, because it appears to interfere with placement of a 4.5x4(2) abutment.  The position of #31 is maintained by open coil spring.

Upright Before & After Implantation Last Next

Xin Wei, DDS, PhD, MS 1st edition 11/29/2016, last revision 08/13/2018