A study done by dental professionals showed that eating cheese might help to prevent dental cavities. Four groups were tested, consuming milk, sugar-free yogurt, paraffin, and cheese, and the pH balance in various areas of their mouths were tested before and after consumption. A pH level lower than 5.5 can leave your teeth at risk for erosion due to acids created in your mouth. While the groups who drank milk, and ate paraffin and sugar-free yogurt showed no significant change, the group who ate cheese experienced an increase in pH levels.