Question

How many different types of teeth an adult human has and in which manner they are arranged?

Answer 1

Teeth are hard bony and mineral-rich structures used to bite and chew food and are present in our mouth. The shape, size, and type of teeth are different in different human beings. Generally, teeth are of four types: incisors, canines, premolars, and molars. All four types of teeth are present in the mouth but in different numbers.

Complete answer:
The total number of teeth present in the mouth of a human being is represented in a standard way that is I for incisors, C for canines, P for premolars, and M for molars. This gives a set like an appearance I: C:P: M. If I: C:P: M is given as 2:1:2:3 for the upper jaw, this indicates the presence of 2 incisors, 1 canine, 2 premolars, and 3 molars on one side of the upper jaw.
Therefore the dental formula of an adult human being is:
$\left( 2123/{ 2123 } \right) \ast { 2 }={ 32 }$,
The total number of teeth in an adult human being is equal to 32.
In human beings, they found two types of dentition: temporary and permanent. In temporary dentition, the number of teeth present is 20 whereas in permanent dentition the number of teeth present is 32.
The temporary dentition is found in children which are also called milk teeth or deciduous teeth are 20 in number. This starts growing at the age of 6 years.
Therefore the dental formula of a human child is:
$\left( 2102/{ 2102 } \right) \ast { 2 }={ 20 }$
This means there are 2 incisors, 1 canine, and 2 molar teeth.

Note:
- The dental formula represents the sequence of teeth on one side of a jaw.
- The four types of teeth are incisors, canines, premolars, and molars.
- Dental formula la represents the number of all four types of teeth in our mouth.
- In temporary dentition, the number of teeth present is 20 whereas in permanent dentition the number of teeth present is 32.