u/Both_Guarantee_232

My daughter (8 yo) just lost this tooth and part of it is discolored a dingy brown. Is this likely a cavity? Or maybe the part of the tooth that first separated from the gums a long time ago? Just curious really. She gets regular detal care and I think last time they mentioned a baby tooth with a cavity that they thought would fall out soon, so they didn't fill it. I'm wondering if this is that tooth. Thank you!