On the inside on my kid(3y) mouth on lower jaw bone beneath  teeth ,  jaw bone seems to be protruding out like there is a large lump. It does not hurt to press on it and I cannot move it. It also feel very hard and seems to be part of jaw bone. It is similar in the other side but not nearly as large. I m afraid it might be a tumor growing within  bone
Dear friend. Thanks for sharing your concern. As you have mentioned in your history that, it is painless bony growth, it could be an exocytosis. That is a mass of bone protruding from the jaw. You must visit your dentist, irrespective of growth being painful or not, and get it examined clinically. Also keep a close watch on its progression, if there are any changes report to the dentist. In my view it should be a Tori or exocytosis. Which can be corrected surgically in later stages, but present evaluation is must. Hope it helps. Thanks. Take care.