I would ask the dentist if they can see the adult teeth starting to work their way down in the x-ray. If so, I wouldn't worry about the silver caps because the teeth probably will come out soon. If it doesn't appear that the teeth will be coming down any time soon, then I would consider the caps. Not all children lose their teeth at 5 or 6. My 8 year old granddaughter has only lost 2 teeth so far!