My son is 7 years old. Since he was a baby there has been a large lump on his upper gum. At first, we thought it was a tooth growing in funny and then we thought it was a bone. As he grew older, the lump grew larger. Come to find out it is called an "odontoma". The dentist said that it is a mass of teeth,tissue,and bone fragments that have clustered together in his gum. Has anyone ever heard of such a thing and will they have to surgically remove it?