The problem with using the mouthwash solution with an activated solution that is activated according to the Miracle-Mineral-Supplement protocol is that it ends up being very acidic. You end up with a highly concentrated ClO2 solution with a PH of 2, or lower. This is about the same PH as stomach acid.
If you consider swishing stomach acid in your mouth for a period of time, and repeat this frequently, it is very possible that damage can be done to the teeth.
It is much safer to use sodium chlorite in water as a mouthwash. This solution has a neutral to slightly alkaline PH, and becomes activated by the acids in the mouth. Only as much chlorine dioxide as is needed is released. This release as needed feature makes it very safe to swish for extended periods of time.