op is just fine. it will help, in fact. breath in through your nose and out through your mouth 24/7. you can consciously train yourself to do this automatically. 21 days can establish such habit with consistent effort.
the fillings will become an issue the cleaner the body gets. it is like squeezing a wet sponge. it then accepts more water that much more readily and then holds on to it so it must be squeezed again. get it? got it.