The graph shows pH changes in the mouth after eating.
Why is it a good idea to brush teeth after eating?

1 )
Acidic conditions help bacteria to grow.
Acids dissolve tooth enamel.
3 )
Alkaline conditions help bacteria to grow.
4 )
Alkalis dissolve tooth enamel.
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!