They're his milk teeth, he's only 5 but they are noticeably darker than all his other teeth. Is this something to be concerned about or should I nor worry as they're milk teeth and will come our anyway. I was thinking of phoning the dentist tomorrow morning. DS isn't complaining they hurt, although he has in the past moaned about his teeth hurting. He had a check up recently and all was ok, but a couple of weeks ago he had a nasty fall in the playground.