The small lingual foramen (black "hole" in lower portion of picture) as seen on a periapical radiograph of the anterior mandible.
The lingual foramen is a small midline opening on the posterior aspect of the symphysis of the mandible, just above the mental spine. The lingual foramen gives passage to a single small artery formed by the union of two branches of the sublingual arteries (each sublingual artery contributing a single branch).[1]
References
^Gray's Anatomy: The Anatomical Basis of Clinical Practice. Susan Standring (41st ed.). Philadelphia. 2016. p. 513. ISBN978-0-7020-5230-9. OCLC920806541.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)