Structural arrangement of teeth is known as dentition. Dental Formula, Dentition in Herbivores Dentition in Carnivores Dentition in Omnivores Arrangement of teeth

1. Arrangement and Structure of Teeth

2. What is dentition?
• The type, number and arrangement of teeth.
or
• Developing and cutting of new teeth.

3. • Reptiles are homodont and conical shape.
• Mammals are heterodont their teeth are
specialized for different functions.
• Reptilian teeth attach on top or inside the
jaw.

4. Most mammals have two sets of teeth:
• Milk teeth
• Permanent teeth

5. Adult mammals have four kind of teeth.
• Incisors
• Canines
• Premolars
• Molars

6. Dental Farmula:
Dental formula is an expression of the
number of the teeth of each kind in one
half of upper and lower jaw.

7. Dentation in different mammals:
Mammals teeth

8. Dentition in Edentata:
• Dentition is reduced
• No teeth
e.g;
• Armadillos and Giant anteater
• Feed on termites and ants

9. Dentition in omnivorous:
Feed on plant and animal material.
Anterior teeth have sharp ripping and piercing surfaces.
Posterior teeth are flattened grinding surfaces.
It is used for rupturing of plant cell wall.

10. Dentition in Herbivorous:
• Flat grinding posterior teeth.
• Incisors and canines are modified for nipping plant matter.
• Horses and Deer some other used them for gnawing like
rabbits.
• The incisor of rodents grow through out life
• A gap which is present in between the mammals
called Diastema.
• Separates anterior food procuring teeth from posterior
grinding teeth.
• Diastama elongation of snout.

11. Dentition in Carnivorous:
Predatory mammals use canines and incisors for
catching, killing and tearing prey.
Order carnivore e.g. Dogs, cats.
There forth upper premolars and first lower molars
form a scissor like shearing
surface is called carnassial apparatus.
It is used for cutting flesh from prey.