Presentation on theme: "Teeth Teeth are structures found in the jaws of many vertebrates. The primary function of teeth is to tear and chew food, and in some animals, particularly."— Presentation transcript:
1 TeethTeeth are structures found in the jaws of many vertebrates. The primary function of teeth is to tear and chew food, and in some animals, particularly carnivores, for fighting and/or defence.All turtles lack teeth.Carnivorous & reptiles teeth are tapered to sharp points.Type of teeth according to their attachements:Thecodont : Teeth may be attached in sockets .Acrodont: On the alveolar surface of the jaw. each tooth resides on the occlusional surface of the jaws in a very shallow socket. Replacement teeth arise adjacent to the active teeth (snakes).Pleurodont: Attachement on the inner side of the jaws (lizards).Thecodont: Are replaced within the same socket (reptiles).
2 Mammals have incisors, canines, premolars and molars in both the upper and the lower jaw. These tooth types are structurally different and each has a specialized function.In mammalian carnivores, the upper canines are quite large and specialized for live prey capture and killing .In mammalian herbivores, the canines are absent, leaving a space, called a diastema, between the incisors at the front of the mouth and the premolars and molars at the back of the mouth .
3 Types of teeth :Incisors are the primary biting teeth.Canine teeth bite and tear food.Premolars shear, grind and mash food.Molars are responsible for the most vigorous chewing.