Tooth enamel is the hardest substance in our body. Name the compound of which it is made up of. At what pH of the mouth it gets corroded ? State the role of bacteria present in the mouth. Suggest a method to prevent tooth decay.
CBSE Class X Science SA 1 ( 2 marks)
Answers
⭐IT GET CORRODED IN THE OH OF 5.5
⭐THE BACTERIA PRESENT IN THE MOUTH REACT WITH THE REMAINING FOOD AND SECRETE ACID. TO PREVENT IT TOOTHPASTE CAN BE USED TO NEUTRALIZE THE ACID.
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The enamel on your teeth is the toughest and extremely mineralized material in the body. It comprises the external layer of each tooth and it is the commonly noticeable part of the tooth. The enamel is made up of essential minerals, highly Hydroxyapatite
Bacteria and food can result in tooth decay. A transparent, viscous material called plaque is always developed on the teeth and gums. Plaque comprises bacteria that serve on the sugars in the food which we consume. Later on, these bacteria can produce acid in the mouth.
Due to acid, tooth results in demineralizing which can develop tooth cavity.
Tooth decay can be prevented by
1.brushing the teeth regularly and two times a day
2.Rinsing the mouth after consuming the meal
3 By drinking a lot of water.