Fig.9: To be consistent with drill sequence of the 3 implants, extract #4, debride the socket, but do not place gauze unless hemorrhage is uncontrollable. Then place guide for #13, 4 and 14 implant placement as shown next. Save autogenous bone. For #13, add 2.2x11.5 mm drill as the last one for depth. If the torque is still high, next will be 3x11.5 mm drill after removing the implant.
Xin Wei, DDS, PhD, MS 1st edition 04/24/2020, last revision 04/30/2020