- Humans have two kinds of teeth in their lifetime, namely milk tooth (primary tooth) and permanent teeth / permanent. Children have 20 milk teeth, which will be replaced by permanent teeth / permanent at the age of about 13 years. Adults normally have 32 teeth fixed / permanent. (2)

- Classification of types of gear can be seen as follows:

Based on the growth period:

* Baby teeth are teeth that grow from the age of 6 months. Number of Top 20 pieces.
* Teeth fixed / permanent replacement teeth that is gradual date. At most amounted to 32 pieces. (1)

a. Milk Teeth (primary)

Most children are born without teeth which can be seen (the teeth are in the gums). 20 milk teeth grow (eruption) gradually begins when babies aged 6 months to 1 year



b. Teeth fixed / permanent

All the milk teeth will be loose and will be replaced by 32 permanent teeth / permanent, this happens to survive in the children aged 6 years to 14 years. Last teeth (molars 3) will bererupsi at the age of 17 to 21 years.



Based on the form:

* Incisor (incisors) serves bite or cut food.
* Canine teeth (canines) serves rip or tear food.
* Wisdom front (premolars) and molars back (molar) serves chew or crush food. (1)