Bone density around the molars (including apical to #14) (Fig.1 black *) is higher than that around the premolar (white *).

Because of high bone density apical to the sockets, drills are required for osteotomy in the septum (type II bone) instead of osteotomes after extraction.  Primary stability is easily achievable (>60 Ncm).  The patient recalls pain associated with implant placement when he returns for restoration 5.5 months postop.

A large implant is planned so that it is able to fill in the large defect around the roots as much as possible to reduce gap for bone regeneration.

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Xin Wei, DDS, PhD, MS 1st edition 07/20/2013, last revision 01/19/2018