Q. My daughter (10) had braces fitted in January. After a week or so she developed small marks, resembling cold sores, on either side of her mouth.They gradually have become much larger and unsightly. I have been told they are not cold sores but maybe connected with the braces. She also has very swollen gums. I am very strict with her oral hygiene and we do everything as we have been directed but the problems is not improving. Last week our orthodontist removed her braces and asked us to return in 1 month. Her mouth and gums have started to cleared up since the metal bar was removed. Could she be allergic to the metal or could it be how we are taking care of her teeth?,