Canines

Canines, also known as cuspids or eye teeth, are the teeth located next to the incisors in the front of the mouth. In terms of eruption ages, the upper canines typically emerge around 11-12 years of age, while the lower canines emerge a bit earlier, around 9-10 years of age.

In humans, they are typically the longest and most pointed teeth, with an average length of about 1.5-2 cm. They have a single long, pointed cusp that is designed to pierce and tear food, and they are also typically thicker and more robust than the incisors. Canines have a slightly curved shape that helps them to fit into the grooves of other teeth when the jaws are closed.

The primary function of canines is to grip, bite and tear food, as well as for providing support to the lips and cheeks. Canines are also important for proper occlusion, or the way teeth fit together when the mouth is closed. They help to guide the rest of the teeth into the correct position when biting down, and can influence the shape of the dental arch.

In humans, canines also play a role in biting and tearing food, but they are not as prominent as in carnivorous animals like lions.

In addition to their functional roles in eating and dental occlusion, canines have also been culturally significant in many societies. In some cultures, they have been used for body modification, such as filing or sharpening, for aesthetic or religious purposes.