Abstract
Stafne bone defects are asymptomatic lingual bone depressions of the lower jaw that are frequently caused by submandibular salivary gland inclusion. A 64-year-old male patient was referred to the radiology clinic for evaluation of a root fracture in the left mandibular first permanent molar using cone beam computed tomography (CBCT). On the panoramic reconstruction, a hypodense image was observed, with a rounded shape, well delimited by a hyperdense halo, located in the mandibular body and below the mandibular canal, suggestive of a Stafne bone defect or cystic and tumor lesion. Through the multiplanar and 3-dimensional reconstructions, an image compatible with bone depression was identified in the lingual cortical bone, confirming the diagnosis of Stafne bone defect. The CBCT is a complementary exam indicated for the diagnosis of the Stafne bone defect, since it allows visualization of the concavity present in the lingual cortical bone, ruling out other pathologies.
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