What is dentition?
Dentition refers to the number, arrangement, and conformation of teeth in an organism.
What are the types of dentition?
Homodont dentition and heterodont dentition.
What is homodont dentition?
All teeth are of the same shape, size, and function. Found in fishes, amphibians, and reptiles.
What is heterodont dentition?
Teeth have different shapes, sizes, and functions. Found in mammals.
What are the four types of teeth in mammals?
Incisors, canines, premolars, and molars.
What is the function of incisors?
Flattened, chisel-like teeth used for cutting and holding food or prey.
What are canines used for?
Long, pointed teeth used for tearing food.
What are premolars and molars used for?
Chewing and grinding food.
What are the three regions of a mammalian tooth?
Crown, neck, and root.
What is the function of enamel?
Enamel is a hard, white material that protects the dentine and pulp inside the tooth.
What is the dental formula for humans?
2[I=2/2, C=1/1, P=2/2, M=3/3] = 32.
What is the adaptation of herbivore dentition?
Chisel-like incisors for cutting grass, diastema for repositioning food, and ridged molars for grinding.
What is the dental formula for herbivores?
2[I=2/1, C=0/0, P=3/2, M=3/3].
What is the adaptation of omnivore dentition?
Broad premolars for grinding and sharp incisors for cutting food.
What is the dental formula for omnivores?
2[I=2/2, C=1/1, P=2/2, M=3/3].
What is the adaptation of carnivore dentition?
Sharp incisors for catching prey, curved canines for tearing flesh, and pointed molars for crushing bones.
What is the dental formula for carnivores?
2[I=3/3, C=1/1, P=4/4, M=2/3].
What causes tooth decay?
Bacteria and fermentation of carbohydrates trapped in the teeth.
How can tooth decay be prevented?
Regular oral hygiene, avoiding sugary foods, eating a balanced diet, and visiting a dentist.
What is the function of the periodontal membrane?
It anchors the tooth to the jawbone.
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