Anatomy of teeth 

All teeth have same structure which consist of three layers – Enamel (outer layer), Dentine (middle layer) and Pulp (innermost layer) (Ref).

Enamel- Enamel is the hardest and outermost layer. It protects dentine and pulp from damage due to tooth cavity, wear and tear, infection and teeth sensitivity. It can still break down from plaque.

Dentine- It’s immediately underneath enamel on the crown and cementum on the roots. It provides support to the enamel to maintain its structure.

Pulp- Pulp is the innermost layer that contains nerves and blood vessels. It nourishes the dentine.

Cementum- It’s the root of the tooth which sits inside the gum socket, it’s a calcified or mineralized tissue layer.

Root canal- Anatomic space with the root of the tooth. Nerve, blood vessels and connective tissue passes through root canal to the pulp chamber.

Gum- Even known as gingival. It consists of the mucosal tissue that lies over the upper and lower jaw inside the mouth. It the soft tissue lining in the mouth. Gums surround the teeth and provide seal around them.

Type of teeth

There are four types of teeth- Incisors, Canines, Premolars and molars.

Incisors- Front 8 teeth on both lower and upper jaw are called incisors. This flat with thin edge teeth are sharp and help to bite into the food and cut it into smaller pieces.

Canines- Canines teeth are fang like teeth beside incisors.  It helps to tear up the food.

Premolars- Premolars are eight in total but only in adult. They have ridges that help in chewing and grinding the food.

Molars- Molars are the biggest of all the teeth. They are large, flat surface with ridges that grind and chew the food. Children have 8 primary molars and adults have 12 permanent molars.  

Wisdom teeth are the last molars to come and it comes between the ages of 17-21.

We all know that human teeth once lose cannot be re grown. In human life we do have two sets of teeth- primary and permanent teeth.

Primary teeth- Primary teeth even known as baby teeth are total of 20. Its starts growing around 3 months and grown till the age of 3. Primary teeth starts to fall from age of 6 and complete fall out at the age of 12. It consists of incisors, canines and molars.

Permanent teeth- Permanent teeth even known as adult teeth and are total of 28. As primary teeth starts to fall it starts to grow and complete grown till the age of 13. It consists of incisors, canines, pre molars and molars. You know about wisdom tooth, they grown in twenties.