Abstract
Double mental foramina found with preoperative computed tomography (CT) prior to implant therapy are reported and discussed in reference to literature reports. A 52-year-old man visited us for implant therapy. Preoperative panoramic radiography and CT were conducted. A multisection reconstructed sagittal image showed two mental foramina leading to the mandibular canal on the right side of the mandible, which were diagnosed as double mental foramina. The incidence of double mental foramina reported in the literature is approximately 6.9% in dry Japanese skulls. Many reports have indicated that non-Caucasians have a higher incidence than Caucasians. The general incidence ranges from 2% to 10%. However, only one clinical case report is available.
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