A 44-year-old man presented to clinic with pain of the upper left quadrant (Fig.1), but the affected tooth was not determined until 5 months later (Fig.3,4).  Retrospectively the minor crack is visible earlier (Fig.2 arrowheads). 

Pain with Unknown Origin Initially

Xin Wei, DDS, PhD, MS 1st edition 03/23/2018, last revision 03/23/2018