A radioactive isotope will stop decaying when there are no more atoms of the isotope left.
See the problem either in Germany or at any place is the same,Improper brushing of teeth.When the food accumulates between the teeth it starts decaying and lead to to teeth decaying with it.
The sugar in it sticks to your teeth. if not brushed, then in starts to acumulate bacteria and begins decaying your teeth, commonly in the crevises of your teeth. The decay creates a hole after a while also called as a cavity.
Put them in water with some lemon juice
It could be caries, which usually applies to the decaying of teeth. Or it could be "rotten".
you should take it to a vet to get the teeth trimed
they get stained with tar wich is a dark brown stain. your gums start decaying also.
Dentists help by making sure a person has clean and healthy teeth and gums. They diagnose and treat problems and provide preventive care.
In packagin crisps to stop oxygen decaying them, and in light bulbs to stop the oxygen eroding the tungsten filament faster.
No this is not normal, the animal probably has rotting or decaying teeth. Your veterinarian should be contacted to float (or file) the teeth down.
Addies doctor visit
you teeth stop gowing when you have switched out every one of them