Dental Formula of Child: Incisors, Canine, Premolars & MolarSanjoy
In this article, we will talk about dentistry or we can say the dental formula of child, adults, and animals. The teeth structure and dental formula for animals differ from that of the dental formula of child (humans).
Have you ever wondered why animals and humans have different teeth structures? That is to say, carnivorous animals such as lions, tigers, leopards, etc. have pointed teeth whereas humans have blunt teeth. The question may sound silly and abnormal. However, there is a scientific reason behind the teeth structure of various animals.
Pointed and Blunt Teeth:
Let’s understand it by taking various examples.
Firstly, a carnivorous animal like a lion would have pointed teeth. The science behind having pointed teeth lies in the food of lions. That is to say, a lion eats the raw meat of other animals. To tear and chew the meat of animals, lions would require long and pointed teeth. These fangy teeth will help them to ingest and digest the meat properly.
Secondly, a herbivorous animal like a cow would have blunt teeth. It is because cow eats grass and vegetables which cannot be chewed by pointed teeth. Hence, during the course of evolution, herbivorous animals have adapted the blunt teeth. Another example can be rabbit teeth. The teeth of rabbits are designed especially to chew carrots and other vegetables.
Lastly, omnivorous animals like humans have mixed structures of teeth. In other words, humans have pointed as well as blunt teeth in both the upper and lower jaw. It is because humans eat meat as well as vegetables. So, we require both pointed teeth and blunt teeth.
Types of Teeth:
As of now, you would have understood that there exist two main types of teeth. Those are pointed and blunt. However, these are commonly named but not scientifically. In other words, the teeth are named as per their function and position inside the jaw. Here are the four different types of teeth.
Stand in front of the mirror. Can you see two big teeth in front? Those are called incisors. The function of these teeth is to cut the bigger food pieces into smaller ones. So, that the small pieces can fit into your mouth and can be digested easily. Also, it has a chisel-shaped structure which helps us to slice the food.
The incisors are present in both the upper and lower jaw. Most mammals including humans have incisors. These are denoted by (I).
Now, see the pointed teeth present adjacent to your incisors. These teeth are used to tear the meat and hardcovers of some fruits or nuts. The canines are present in herbivores, carnivores and omnivores (humans).
Herbivores use canines to split the nuts (squirrels) and carnivores use them to tear the meat apart. Omnivores, let’s say humans, use them to do both.
These are also present inside the upper as well as lower jaw and denoted by (C).
These are flat-surfaced teeth present adjacent to canines. These are used for chewing and grinding the big food pieces into small particles. This set of teeth converts the complex food into a quickly digestible form.
These are denoted by (P).
These teeth are present at the end of the upper and lower jaw. These are used to grind the food for efficient digestion. A total of 12 molars are present in the oral cavity.
These are denoted by (M).
What is dental formula?
So, before going further, let’s first understand the dental formula. The dental formula referred to the number of teeth present in the oral cavity of an organism (mammals or humans).
The dental formula represents the arrangement and the total number of teeth present in the oral cavity. The dental formula varies from one species to another. In other words, it is different for lions and humans. Obviously, the total number and arrangement of teeth in the oral cavity of a lion is different from a man.
Most importantly, the dental formula of a child is also different from that one of an adult. Also, the dental formula for deciduous teeth differed from other formulas.
Dental Formula of Child 2120 or 2102:
As we know, Incisors, Canine, Premolars, and Molars are denoted by I, C, P, and M, respectively. So, the dental formula is written in I.C.P.M. form. This depicts the arrangement of teeth in the oral cavity.
Now, what would be the dental formula of child? One of the most important things to keep in mind is that the children have deciduous teeth or milk teeth. As it is clear that the dental formula for deciduous teeth does not include molars. Hence, the dental formula of a child differs from an adult.
So, the dental formula of a child can be written as follows:
This represents that 2 incisors, 1 canine, 2 premolars, and 0 molars are present in the oral cavity of a human child. Hence, the confusion is clear about the dental formula of child 2120 or 2102. It is 2120.
Dental Formula of Adult Human:
The dental formula for adults can be written as follows:
It means that an adult human has 2 incisors, 1 canine, 2 premolars, and 3 molars.
Doubling the digits given in the formula formulas will give you the total number of individual teeth types. Also, it can give you the total number of teeth present in the oral cavity.
Now, you are all set to count your own dental formula. Count the number of teeth and comment on the dental formula of your oral cavity.
You May Also Read: Oral Health: Types, Importance, 4 Ways of Child Dental Care
In the conclusion, the dental formula is the count of total types of teeth and their arrangement in the cavity. The dental formula of a child is 188.8.131.52 whereas adults have the dental formula as 184.108.40.206.