ChemistryClass 10ICSE
Q
• (a) Explain why the pH in a person's mouth becomes lower after each meal. (b) What damage could be caused while the pH is low? How could the person change his eating habits to lessen chances of suffering from tooth decay?
A
- The main reason for the low pH in a person’s mouth after each meal is due to the acid formation due to the activity of After meals the sugar in the food item will break down to acids by the bacteria as the acid has low pH acidity increases.
- While pH in the mouth is low tooth decay can occur which is formed due to the acidity in
- Tooth decay can be prevented by our self without consulting a Always brush teeth two times a day after having food. Before sleeping brushing is must as the chances of bacterial action is more at the time of sleep. Avoid sweet items like chocolates and ice creams.