What value of pH in the mouth leads to tooth decay ? Why ?

What is tooth decay ?

When does tooth decay begin?

Discuss the role of a pH in causes of tooth decay.

What is tooth enamel chemically ? State the condition when it starts corroding. What happens when food particles left in the mouth after eating degrades ? Why do doctor suggest the use of tooth powder/tooth paste to prevent tooth decay ?

What is tooth enamel chemically ? State the conditions when it starts corroding. What happens when food particles left in the mouth after eating degrade ? Why do doctors suggest use of tooth power/tooth paste to prevent tooth decay ?

ONE WORD ANSWER QUESTION What are the major causes of tooth decay ?