Furthermore, the socket is almost cylindrical apicocoronally (Fig.2).  Common wisdom dictates obtaining apical new bone for primary stability.  Due to the extensive lesion and the short statue and small mouth of the patient, the osteotomy turns out to extremely difficult: being too short initially (Fig.2 parallel pin), probably too long in the middle of the procedure (Fig.3: 5x17 mm tap) and having to be adjusted (Fig.4-6).  Yellow dashed line: the upper border of the Inferior Alveolar Canal.

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Xin Wei, DDS, PhD, MS 1st edition 05/23/2015, last revision 12/09/2018