By the time a 5.3x8 mm drill with stopper (Fig.4 *) is placed, the clearance appears to be sufficient.  Finally an extra wide implant (5.9x8 mm) is placed with insertion torque > 60 Ncm (Fig.5). 

Non-Immediate Implant in Lower 2nd Molar Last Next

Xin Wei, DDS, PhD, MS 1st edition 05/31/2015, last revision 11/20/2018