for years and years my urine ph fluctuates normally but my salival is always low.. way low.. I have had conebeam scans done, thermogram , x rays on mouth everything looks good the biodentist said that I am in the top two percent of all their patients.. At tiems when I have made a concerted effort having something alkaline every few hours I have gotten urine ph up over 8 and still the mouth is acidic.. I dont like to do the high alkaline dosing as it seems to stress my kidneys, ie w baking soda, after a bit .. my only thought was that my dental fillings ( no not mercury ) are something my body is allergic too.. have had no money to do a dental filling material allergy test.. hmmm NO one has answered this mystery for me to date . I will even get my urine ph up well over 7 for weeks and weeks on end still salival is low.. what the heck?