An anatomical anomaly of the lingual border of the mandibular impression.
D003761:Dental Impression Technique; D005152:Facial Muscles / Q000033:anatomy & histology; D006801:Humans; D007575:Jaw, Edentulous / Q000000981:diagnostic imaging / Q000473:pathology*; D008334:Mandible / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D011859:Radiography