Hi my son had an X-ray taken in mouth today and it showed a darken circle area under tooth 35 ( I think that was the number) the roots in that tooth are ver short and it is wiggly, he had no feeling in that tooth when tested with freeze.  They do not know what it is, he also has a lump that you can feel on the outside of face. He is only 9 and is very healthy. I am worried sick!
Hello. Thanks for sharing your query with us. Darken circle area you have mention under the tooth 35 can be because of bone loss under tooth which occurs because of any Periapical (below the roots) infection;here which relates with the SWELLING or LUMP on face in that region. It can be any dental cyst or an access. But can only be conformed by viewing the x-ray only so I can not tell whether it is cyst or access or any other pathology.Also, you said your son is 9yr old so in 35 regions, the developing posterior tooth in the jaw also shows round encircled tooth below the upper tooth which is seen in the oral cavity, the roots of which are seen short, resorbed and uneven in the x-ray. But the teething process do not accompanied by lump unless there is infection to the tooth. So I would advise you to send the x-ray of your son so that we could find the problem. Hope you satisfied. Thank you.