Hello,
I had excess of acid from my stomach coming to my mouth for a couple of weeks. Some web-pages say that having this for a long period affects negatively on digestive tract and mouth (e.g., teeth). What is "long" in this case?
It seems that my system buffered this excess during days well, but I am not sure about nights. So, on a related note, what is pH of saliva that a healthy person has in the morning (before swallowing) and during night?
Thanks.