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.

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Xin Wei, DDS, PhD, MS 1st edition 04/24/2020, last revision 04/30/2020