case_images: PMC3474221_01
case_images: 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.
case_images: CRIM.DENTISTRY2012-474013.001.jpg
case_images: PMC3474221_01_CRIM.DENTISTRY2012-474013.001.jpg
case_images: fig1
case_images: The lower left first premolar tooth was markedly tender to percussion, and a long-cone periapical radiograph (LCPA) revealed a significant periapical radiolucency (Figure 1(a)). Once again, no decay or periodontal issues were found clinically, but LCPA examination of the lower right quadrant showed periapical pathology associated with the mandibular right first premolar tooth (Figure 1(b)).