Ovarian teratoma or dermoid cyst of the ovary is a benign tumor which usually contains a diversity of tissues including teeth, bone, hair etc Dermoid cyst develops from totipotent germ cells retained within the ovary which can give rise to all types of cells in a mature tissue such as hair, bone, sebaceous material, neural tissue and teeth. By: https://www.instagram.com/p/CFah008BR_t/?utm_medium=copy_link