Kazuki Miyauchi

Preoperative assessment of the relationship between the mandibular third molar and the mandibular canal by axial computed tomography with coronal and sagittal reconstruction

OBJECTIVE We sought to evaluate the relationship between the mandibular third molar and the mandibular canal by using axial computed tomography with coronal and sagittal reconstruction for third molar surgery. STUDY DESIGN Forty-seven impacted third molars in 41 patients were found in close association with the mandibular canal during a panoramic radiographic assessment. The relationship between the mandibular third molar and the mandibular canal was evaluated by using computed tomography and compared in terms of operative exposure of the inferior alveolar nerve and postoperative labial dysesthesia. RESULTS Twenty-four (51%) mandibular canals were buccal relative to the third molar, 12 were lingual, 9 were inferior, and 2 were between roots. At the time of the surgical procedure, the inferior alveolar nerve was visible in 7 patients. Postoperative lower lip dysesthesia occurred in 1 patient whose mandibular canal was in the lingual position. CONCLUSIONS Axial computed tomography with coronal and sagittal reconstruction provides useful information to surgeons regarding the relationship between the mandibular third molar and the mandibular canal.

Pathological fracture of the mandible resulting from osteomyelitis successfully treated with only intermaxillary elastic guiding

Treatment of mandibular pathological fractures differs according to etiology. Closed reduction with intermaxillary fixation is usually performed when fractures occur as a result of osteomyelitis. Here is reported a case of pathological fracture of the mandible resulting from osteomyelitis that was successfully treated with intermaxillary elastics only.

Granular Cell Tumour of the Lower Gingiva: a Case Report, Immunohistochemical Evaluation, and Review of the Literature

Abstract Granular cell tumour is characterised by cytoplasmic, eosinophilic granules, and its origin is still controversial. It arises in soft tissue, mainly on the tongue in the oral region. This article reports a case of a 54-year-old woman diagnosed with granular cell tumour arising in the lower gingiva, and includes details of pathological and immunohistochemical findings.

Double Tooth and Triple Tooth Accompanied by Multiple Supernumeraries

Abstract This report describes a 37-year-old man with 3 erupted supernumerary teeth in the maxilla and 6 impacted supernumerary teeth in the mandible, 2 of which were fused (a double tooth and a triple tooth).