<s>[INST] Hello, my sister has an osteoblastoma in her jaw. She has had it for about 5 years now and it has never given her any problems. She went to the dentist to get her teeth cleaned and she asked the dentist if he knew why her jaw bone was sticking out. The dentist that she went to shaved the bone down in her jaw to run some test, and the tests came back as it being osteoblastoma. She went back today and the dentist told her that if they remove the tumor she will lose 3 teeth on both side of her jaw. So my question is, if she does not get the tumor removed right away what will happen? Considering she has been living with it for years and it did not cause her any pain nor discomfort. [/INST] Hello, osteoblastomas are commonly associated with pain, but you have mentioned no pain. And osteosarcoma also looks similar to osteoblast which is worse. Get a clear picture of the tumor by consulting an MDS (ORAL PATHOLOGIST). An early diagnosed tumor should be removed before it causes any problem is my suggestion. The loss of teeth can be replaced by prosthesis (artificial teeth). In very rare cases benign osteoblast can turn malignant (difficult to treat), so please visit an oral pathologist as soon as possible and get a clear idea of what to do next. If it is an osteoblast my advice will be to take up the surgery. Wish you a healthy happy life. Take care </s>