Static bone cavity is usually an asymptomatic lesion caused by localized bone defects of the lingual cortical bone in the posterior region of the mandible. It rarely occurs in the anterior part of the mandible.
Case report: A 24-year-old man was referred to us for examination of a cystic radiolucency in the anterior region of the mandible. The lesion was accidentally detected on a radiogram for dental examination. The radiogram revealed a well-defined unilocular radiolucency extending from the right canine to the left premolar region of the mandible. No resorption or divergency of the roots was observed. The teeth adjacent to the lesion were positive on electric pulp testing. An excisional biopsy was performed under a clinical diagnosis of a cyst or tumor in the mandible. We found salivary gland tissues in the mandible and a defect of the lingual cortical bone. The specimen was found to be normal sublingual salivary gland tissue on histological examination.
