To tryingtofeelgood: My daughter has had this brown spot since she was a baby(she is 16 now) and has never had any problems with it. The tooth errupted from the gums with the spot. The dentist said that it was just discoloration from possibly hitting her mouth or medication. Her orthodontist was a pediatric dentist before he went into orthodontics and he was not concerned with it either. And she has also seen an oral surgeon to remove teeth, and he didn't mention anything about it. I have used the bleaching trays, but I didn't know if they would work on this type of spot or on the whiter marks on her teeth. Maybe the whiter marks are where the tarter build up prevented that part of the tooth from darkening, so when the rest of the tooth is lightened with bleaching, it will match the lighter area. Who knows.