 The anterior defects may be associated with the sublingual salivary gland.Stafne's defect is usually discovered by chance during routine dental radiography.Radiographically, it is a well-circumscribed, monolocular, round, radiolucent defect, 1–3 cm in size, usually between the inferior alveolar nerve (IAN) and the inferior border of the posterior mandible between the molars and the angle of the jaw.