Dermoid cyst of the mandibula: clinical, instrumental and morphological aspects. A) Radiograph showing a radiotrasparent, monolocular area on the right side of the mandibula, located between the roots of a canine and the first premolar. B) After intra-oral incision, a "bone window" was peformed, that allowed the vision of a round solid lesion. C) Macroscopic aspect of the removed lesion. D) Histological image of the cyst (Haematoxylin/Eosin, original magnification ×20).