Tooth decay starts when the pH of our mouth is_______.
lower than 5.5
Tooth Decay pH Threshold Explained
Tooth decay, also known as dental caries, begins when acids erode tooth enamel. These acids are primarily produced by bacteria in the mouth feeding on sugars from food and drinks.
The enamel on our teeth starts to dissolve, or demineralize, when the acidity in the mouth becomes too high. This critical point is measured by the pH scale.
Critical pH for Tooth Enamel
Dental health professionals consider the critical pH level for tooth enamel demineralization to be approximately 5.5. When the mouth's pH consistently drops below this value, the enamel loses minerals faster than it can replenish them, leading to decay.
Therefore, tooth decay starts when the pH of our mouth is lower than 5.5.
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