How Saliva pH Affects Dental Health
Your salivary pH can have serious implications for your dental health. While tooth enamel is the hardest substance in the body, it can be damaged by acidic saliva. When the pH of your saliva drops below 5.5, your tooth enamel starts to break down, notes the Scientifica article. Unfortunately, since tooth enamel can't grow back, this damage is permanent, reports the American Dental Association (ADA). If your enamel has been eroded by acids, your teeth might be sensitive. You could also notice discomfort when you drink hot, cold or sweet beverages. Yellowish discoloration is another warning sign of enamel erosion.
Enamel erosion also paves the way for another dental issue: cavities, which are small holes in the tooth surface. When your enamel erodes away, bacteria can more easily attack your teeth with acid and cause these holes. As the Scientifica article notes, the longer your teeth are exposed to low (acidic) salivary pH, the likelier you are to develop cavities.
Cavities don't heal by themselves, so you'll need to see your dentist for treatment. Dentists may repair small cavities with fillings, while larger cavities may require more extensive restorations, such as crowns.