The human teeth function to mechanically break down items of food by cutting and crushing them in preparation for swallowing and digestion. source
The human teeth function to mechanically break down items of food by cutting and crushing them in preparation for swallowing and digestion.
Humans have four types of teeth: incisors, canines, premolars, and molars, each with a specific function. source
Humans have four types of teeth: incisors, canines, premolars, and molars, each with a specific function.
The incisors cut the food, the canines tear the food and the molars and premolars crush the food. source
The incisors cut the food, the canines tear the food and the molars and premolars crush the food.
The roots of teeth are embedded in the maxilla (upper jaw) or the mandible (lower jaw) and are covered by gums. source
The roots of teeth are embedded in the maxilla (upper jaw) or the mandible (lower jaw) and are covered by gums.
Teeth are made of multiple tissues of varying density and hardness. source
Teeth are made of multiple tissues of varying density and hardness.
Teeth are among the most distinctive (and long-lasting) features of mammal species. source
Teeth are among the most distinctive (and long-lasting) features of mammal species.
Normal tooth eruption at about six months is known as teething and can be painful. source
Normal tooth eruption at about six months is known as teething and can be painful.
Humans, like other mammals, are diphyodont, meaning that they develop two sets of teeth. source
Humans, like other mammals, are diphyodont, meaning that they develop two sets of teeth.
Some babies are born with one or more visible teeth, known as natal teeth. source
Some babies are born with one or more visible teeth, known as natal teeth.
Humans usually have 20 primary (deciduous, "baby" or "milk") teeth and 32 permanent (adult) teeth. source
Humans usually have 20 primary (deciduous, "baby" or "milk") teeth and 32 permanent (adult) teeth.
Teeth are classified as incisors, canines, premolars (also called bicuspids), and molars. source
Teeth are classified as incisors, canines, premolars (also called bicuspids), and molars.
Most teeth have identifiable features that distinguish them from others. source
Most teeth have identifiable features that distinguish them from others.
There are several different notation systems to refer to a specific tooth. source
There are several different notation systems to refer to a specific tooth.
Among deciduous (primary) teeth, ten are found in the maxilla (upper jaw) and ten in the mandible (lower jaw), for a total of 20. source
Among deciduous (primary) teeth, ten are found in the maxilla (upper jaw) and ten in the mandible (lower jaw), for a total of 20.
Among permanent teeth, 16 are found in the maxilla and 16 in the mandible, for a total of 32. source
Among permanent teeth, 16 are found in the maxilla and 16 in the mandible, for a total of 32.
The pulp is commonly called "the nerve" of the tooth. source
The pulp is commonly called "the nerve" of the tooth.
Tooth development is the complex process by which teeth form from embryonic cells, grow, and erupt into the mouth. source
Tooth development is the complex process by which teeth form from embryonic cells, grow, and erupt into the mouth.
A significant amount of research has focused on determining the processes that initiate tooth development. source
A significant amount of research has focused on determining the processes that initiate tooth development.
Tooth eruption in humans is a process in tooth development in which the teeth enter the mouth and become visible. source
Tooth eruption in humans is a process in tooth development in which the teeth enter the mouth and become visible.
The onset of primary tooth loss has been found to correlate strongly with somatic and psychological criteria of school readiness. source
The onset of primary tooth loss has been found to correlate strongly with somatic and psychological criteria of school readiness.
Dental caries (cavities), described as "tooth decay", is an infectious disease which damages the structures of teeth source
Dental caries (cavities), described as "tooth decay", is an infectious disease which damages the structures of teeth
Tooth abnormalities caused by environmental factors during tooth development have long-lasting effects. source
Tooth abnormalities caused by environmental factors during tooth development have long-lasting effects.