Question

1. Which chemical makes the enamel hard? Is it made up of living or dead
cells?

Answer-
2. Does the dentine make up of living or dead cells?

Answer-
3. Which part of teeth is most sensitive? Why?

Answer-
4. Which part or parts hold the tooth firmly with the gum?

Answer-
5. Name the main two parts of a tooth.

Answer-

Answer 1

Answer:

1. Crystalline calcium phosphate. Enamel is porous, so it absorbs outside substances.

2. Just under the enamel of a tooth is dentin. It is made up of living tissue and cellular material. The majority of a tooth's structure is made up of dentin. Dentin is alive and can heal itself if bacteria growth does not get out of control.

3. The entire dentin of such teeth is usually sensitive so that all tissue still in direct connection with the pulp will react pain fully to our instruments.

4. Cementum is made from connective tissue that binds the roots of your teeth to your gum tissue and jaw. Your periodontal ligament holds your teeth firmly against your jaw. The crown is the visible part of your tooth that you see inside your mouth. Your tooth root reaches below the gum line and into your jaw.

5. the crown and the root

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Answer 2

Answer:

1 Enamel is the outer layer that we see and is the hardest substance in the human body. Composed of crystalline calcium phosphate, enamel is porous, so it absorbs outside substances.

2 Dentin: Just under the enamel of a tooth is dentin. It is made up of living tissue and cellular material. The majority of a tooth's structure is made up of dentin. ... Dentin is alive and can heal itself if bacteria growth does not get out of control.

3 The entire dentin of such teeth is usually sensitive so that all tissue still in direct connection with the pulp will react pain fully to our instruments.

4The periodontium keeps our teeth firmly in place in the mouth. It is made up of four parts: Tooth sockets (dental alveoli) Periodontal ligament.

5 The tooth consists of two major parts: the crown and the root.

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