A 4x8.5 mm implant is incompletely seated with insertion torque > 50 Ncm (Fig.4).  Since there is > 2 mm clearance (red dashed line: the superior border of the Inferior Alveolar Canal), a 2 mm longer drill is then used for 1 mm deeper (Fig.7).

1-Staged Ridge Split Last Next

Xin Wei, DDS, PhD, MS 1st edition 01/27/2016, last revision 07/27/2018