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MAMMALIAN TEETH
The type of teeth possessed by a mammal is related to the type of food it eats. The number, arrangement and conformation of teeth in an organism are referred to as its dentition. When all the teeth are the same shape and size as in fishes, amphibians and reptiles it is called homodont dentition. When they differ in shape as in dogs, man and rabbits it is heterodont dentition.
Mammals usually have four different types of teeth namely the incisors, canines, premolars and molars. Man has two sets of teeth during his lifetime; the milk teeth when young and the permanent teeth when mature. There are 20 milk teeth and 32 permanent teeth.
Types of Teeth
Dental Formula
This refers to the number, type and arrangement of teeth in one half of each jaw.
Example in;
Structure of a Tooth
A typical tooth has three parts; the crown, the neck and the root. The crown is the part above the gum. The root is embedded in the jaw and the neck is the part on the same level with the gum, it is the narrow junction between the crown and root.
The incisors and canines have one root each while the premolars and molars have two or three roots each.
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