Granulation tissue and bone graft are attached to the resected apex of the extracted tooth (Fig.2 < (mesial surface)).  The initial osteotomy with 1.5 mm drill is distal (Fig.3).  In fact it is difficult to establish and maintain the initial osteotomy due to hemorrhage and deep socket.

3.5 mm Implant    Last    Next

Xin Wei, DDS, PhD, MS 1st edition 09/13/2018, last revision 02/16/2020