Question

give reason we must clean our mouth and teeth after eating every meal​

Answer 1

Answer:

Taking care of your teeth helps prevent plaque (say: PLAK), which is a clear film of bacteria (say: bak-TEER-ee-uh) that sticks to your teeth. After you eat, bacteria go crazy over the sugar on your teeth, like ants at a picnic.

Answer 2

Answer:

Brushing After Eating or Drinking

Some foods and drinks, particularly those high in carbohydrates and sugars, can stimulate the growth of oral bacteria that attack your tooth enamel. By brushing your teeth after you eat, you reduce this bacteria and help protect your enamel from damage.

For the best results, use toothpaste that contains fluoride to prevent tooth decay, and triclosan to reduce plaque and gingivitis. However, be sure to consult with your dentist before using a fluoride toothpaste, to make sure it's right for you.

It’s important to note that brushing your teeth immediately after eating can in some cases have a negative effect on your tooth enamel. If you have consumed something acidic, you should avoid brushing your teeth for about 30 minutes afterwards.

Foods that contain citric acid, like oranges, grapefruits and lemons, can soften tooth enamel for a time, and brushing too soon after eating them may damage the enamel while it’s in its weakened state.

In general, try eating nutritious foods that are low in sugar and carbohydrates after eating something acidic. This will help reduce the harmful acids that such foods can create.

In addition, prolonged exposure to phosphoric acid, which is often found in soft drinks, can erode your tooth enamel, exposing the more sensitive tissues beneath. Acid erosion can cause permanent damage to your teeth, so to keep it to a minimum, limit snacking between meals and limit your consumption of soft drinks and sugary snack foods.