When the patient returns for treatment, he insists on saving the tooth #31, which is post pulpotomy (Fig.1 IRM).  IRM is dislodged while accessing the distal orifice.  Sodium Hypocholorite leaks.  It is difficult to proceed with root canal therapy.  After discussion, the patient consents to extraction and immediate implant.  Yellow dashed line: the upper border of the Inferior Alveolar Canal.

Septum Fractures

Xin Wei, DDS, PhD, MS 1st edition 06/25/2015, last revision 06/25/2015