Cheese – For keeping the teeth healthy, very good food is cheese. It contains a lot of calcium but less sugar. To fortify the enamel, a type of protein known as casein is present in it and to maintain bone density so much calcium is present in it. For preserving the enamel by balancing the mouth’s pH levels a high amount of phosphate is present in cheese. Along with this, it is also very helpful in washing the mouth’s bacteria away because a lot of saliva produces by chewing cheese.