Question

difference between milk teeth and permanent teeth​

Answer 1

Answer:

Explanation:

Milk teeth ( Deciduous teeth)

○ Start erupting after 6 months of birth and appear between 6 to 24 months.

○ Smaller, weaker and temporary.

○ 3 types (incisor, canine and molars)

8 incisors + 4 canines + 8 molars.

○ 20 in number, 10 each in the upper and lower jaw.

○ Dental formula of milk teeth 2012.

―――――

2012

Permanent teeth

○ Begin to replace milk teeth in the 6 th year of age and usually completed by 24 years.

○Stronger and permanent.

○4 types (incisor, canine premolars and molars)

8 incisor+ 4 canine+ 8 premolars + 12 molars.

○ 32 in number, 16 each in the upper and lower jaw.

○ Dental formula of permanent teeth 2123

――――

2123.

Answer 2

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⇒There are two sets of teeth in human beings.In child from the age of 6 months to 8 years , 20 milk teeth grow , which are the temporary set of teeth.These milk teeth are replaced by a Permanent set of teeth , which are 32 in number [ 16 in each jaw ] .

⇒The outer and strongest part that covers the tooth is called enamel

⇒ The visible part of tooth present above the gums is called Crown  

Milk Teeth :  

• They grown in child from the age of 6 months to 8 years  

• They are 20 in number .

• They shed off and are replaced by permanent set of teeth .

• They do not contain molars .

Permanent Teeth :

• They are found in adult human beings  

• They are 32 in number .

• Once shed , they cannot be replaced naturally .

• They contain 6 molars in each jaw.