474013.fig.001a
(a)
474013.fig.001b
(b)
Figure 1: Long-cone periapical radiographs showing the left 1(a) and right 1(b) mandibular premolars. Well-demarcated periapical radiolucencies can be seen associated with the first premolar teeth bilaterally. The white arrows indicate radiolucent “invaginations” on the occlusal surfaces of the teeth.