I was brushing my daughter's teeth with a strawberry flavoured toothpaste, especially for children, when I decided to take a look at the ingredients. The box says it contains Sodium Fluoride "which is in our (Canadian Dental Associtation) opinion, am effective decay preventive agent..." But when I looked at the bottom it also says that prevent swallowing. Well...I'm using this toothpaste for a kid in her mouth, so it obviously could happen. Why is it a problem if the kid swallows the toothpaste by accident? And why every dentist and dental association likes fluoride that much? And what's the reality?