Hi my 12 year old has had a loose top right incisor that has been hanging on by dangling gums for months.  Two weeks ago the dentist said it needs to be cut because the gum and tooth are hanging well below the rest of his teeth, but we scheduled another appointment to have procedure done one week from now.  Today the gum has turned dark purple and Im very concerned if there could be infection.
Hi. Thanks for the query. Loose upper incisor at the age of 12 is abnormal whether it is milk tooth that is over retained or a permanent tooth. Purple discoloration of the gum can be due to Infection or trauma causing blood accumulation under the gum. So my suggestion is to first get the latest x-ray if the tooth done to rule out the exact cause of the discoloration. Please upload the image of the x-ray so that I can advise you appropriately. For now don't let him bite anything from the front teeth. Give soft meals and avoid hard foods. Painkillers can be given if there is pain. Hope this helps. Regards.