Biology, asked by nicorelysrodriguez, 9 months ago

What are the different tooth types found in humans? What is the adult human dental formula? What is the juvenile dental formula?

Answers

Answered by sourya1794

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$<body bgcolor=white><font color=red>➪Incisors – The four front teeth in both the upper and lower jaws are called incisors. Their primary function is to cut food.$

$<body bgcolor=white><font color=green>➪Canines – There are four canines in the oral cavity. Two in the maxillary arch and two in the mandibular area.They are behind and adjacent to the lateral incisors.$

$<body bgcolor=white><font color=brown>➪Premolars (Bicuspids) – These teeth are located behind and adjacent to the canines and are designed to crush food.$

$<body bgcolor=white><font color=blue>➪Molars – The most posterior teeth in the mouth are the molars. They have broader and flatter surfaces with 4-5 cusps. They are designed to grind food.$

Answered by piyushsharm31

Do you know? In mammals especially, the number of teeth in both the jaws varied with respect to their food habit. However, it is constant for a particular species.

When we represent the number of teeths according to their kind by any sort of equation, it is known as Dental Formula.

Now how to write the formula?

It is the formula showing the no. of teeths in one half of the upper/lower jaw.

It is separated (i.e. upper and lower jaw) by a horizontal line which is similar to that of a fraction in mathematics.

The no. of teeth shown in the formulae multiplied by 2, gives the total no. of teeth in a species.

Dental formula of Human.

CHILD (milk teeth) - 2 1 0 2 2 1 0 2

ADULTS - 2 1 2 3 2 1 2 3

Here:

Here you can see teeth in upper half jaw is 2 + 1 + 0 + 2 = 5. The total no. of teeth in upper jaw is 5 × 2 = 10. And similarly total no. of teeth in child = 10 × 2 ( both jaws) = 20.

In this way, we can find the total no. of teeth in all organisms by the help of given Dental Formula.

Dental formula for more animals:

Dog - 3 1 4 2 3 1 4 3

Cat - 3 1 3 1 ∣ 3 1 2 1

Cow - 0 0 3 3 ∣ 1 0 2 3

Elephant - 1 0 0 0 0 0 0 3

Note!!

The no. is arranged with correspondence with the kind of teeth in order of Incisors, Cannines, Pre molars, Molars in one half jaw in each row.

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