explain explain the structure of tooth with dental formula
Answers
Well, I can't explain dental formula, but I can explain structure of tooth.
It is coated with a hard substance called enamel, or the commonly known 'ivory'. It is the hardest substance in the human body. Under the enamel, there is an another substance called the dentine, which is softer than enamel, but harder than bone. It protects the dental pulp, which is a connection of arteries and veins. The root of the tooth gives rise to new teeth. Humans are heterodonts.
Human teeth grow in two sets.
- Temporary or deciduous tooth
These teeth appear by age of 2, and fall by age of 6.
- Permanent tooth
These are permanent teeth, and appear by age of 12.
STRUCTURE OF A TOOTH
Teeth are fixed into the gums. Each tooth has the following parts :
▪Root : The part of a tooth embedded into
the jaw.
▪Crown : The top part of the tooth outside the gums.
▪Neck : The part between the root and the crown.
The tooth internally is made up of
▪Enamel : It is the white part of a tooth and it is the hardest substance in our body. It is deposited outside the crown of the tooth. Enamel contains calcium salts.
▪Dentine : Dentine is like a bone structure. It is hard.
▪Pulp Cavity : Inside the dentine, there is a soft pulp cavity which contains blood vessels and nerves.