CBCT reveals periapical radiolucency (Fig.2 ^).  The tooth appears to be nonsalvageable.  The root is 11 mm long.  There is 5 mm bone between the fused apex and the inferior alveolar nerve. The prospective implant is going to engage 3 mm out of the 5 mm native bone for primary stability.

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Xin Wei, DDS, PhD, MS 1st edition 01/28/2013, last revision 01/19/2018