Abstract
Three cases of dermoid cyst at the floor of the mouth were reported. In one case, the tumor was located in the left side, the others were in the middle of the mouth.
In two cases a submandibular incision was needed at the extirpation of the cysts, but one of these cysts was removed perorally without the submandibular incision.
Histologically, one of these cysts was proved to be the epidermoid cyst and the others were dermoid cysts with sebaceous glands.
