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Teeth Development in Children

Dr. Sindhu Vijaykumar

Dr. Sindhu Vijaykumar

  Koramangala, Bengaluru     Feb 22, 2017

   2 min     

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Good nutrition from the mother during pregnancy is important in the development of the teeth as teeth start developing in the fetus. There are four main stages of development of the tooth:

The first stage in the fetus at about 6 weeks of age when the basic substance of the tooth forms.

The second stage when the hard tissue that surrounds the teeth is formed, around 3 to 4 months of gestation.

After the child is born, the next stage occurs when the tooth actually protrudes through the gum.

Finally, there is the loss of the primary baby teeth.

Primary Teeth Development Chart

Upper Teeth

When Tooth Emerges

When Tooth Falls Out

Central Incisor

8 to 12 months

6 to 7 years

Lateral Incisor

9 to 13 months

7 to 8 years

Canine

16 to 22 months

10 to 12 years

First Molar

13 to 19 months

9 to 11 years

Second Molar

25 to 33 months

10 to 12 years




Lower Teeth

When Tooth Emerges

When Tooth Falls Out

Second Molar

23 to 31 months

10 to 12 years

First Molar

14 to 18 months

9 to 11 years

Canine

17 to 23 months

9 to 12 years

Lateral Incisor

10 to 16 months

7 to 8 years

Central Incisor

6 to 10 months

6 to 7 years

Some facts about tooth eruption:

  • For every 6 months of life, approximately 4 teeth will erupt.
  • Girls generally precede boys in tooth eruption.
  • Lower teeth usually erupt before upper teeth.
  • Until 3 years of age, the child has all primary teeth.

Parts of the tooth

Each tooth has four main parts, including the following:

  • The outer layer of the tooth and the hardest material in the body called as enamel.
  • The inner layer and the main part of the tooth and the largest dental tissue known as dentin.
  • Soft tissue on the inside of the tooth that contains the nerve, blood supply, and the ability to produce dentin is called pulp.
  • The part of the tooth that secures it into the jaw is called as root.

Types of teeth

Incisors: The front teeth located in the upper and lower jaws.

Canines: The pointy teeth on both sides of the incisors in the upper and lower jaws, they are used to tear food.

Premolars: They are on side of the mouth and they have the flat surface to crush food.

Molars: They are larger than premolars, with broad, flat surfaces that grind food.

Guidelines for Eruption of Baby Teeth

The following are general guidelines for the eruption of the baby teeth:

  • The first tooth to erupt is known as the central incisor, which is usually a middle and front tooth on the lower jaw. This is followed by the second central incisor on the lower jaw. This is followed by the second central incisor on the lower jaw.
  • Next, the four upper incisors usually come in followed by the first 4 molars, and the remaining bottom 2 lateral incisors.
  • Then the cuspids or the pointed teeth appear.
  • When a child is 2 years old, the 4-second molars appear.
  • The teeth on the upper jaw usually erupt 1 to 2 months after the same tooth on the lower jaw. Children lose their primary teeth at the age of 6. The first teeth to be lost are usually the central incisors followed by the eruption of the first permanent molars. The last primary teeth are usually lost around the age of 12, and is cuspid or second molar. There are total 32 permanent teeth.
Tags:  Dental treatments,Kids health,

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