Fig. 5. Various types of dental implant complications. A. Reformatted coronal cone-beam computed tomographic (CBCT) image shows displacement of a fixture into the right maxillary sinus. B. Low-thickness pseudo-panoramic image revealing over-drilling of the inferior alveolar canal in a patient with history of implant surgery 6 months ago and complaint of numbness of the lower left lip. The drilling hole is marked by arrows. C. Reconstructed cross-sectional CBCT image showing implant fracture (arrow).