Incisors

Incisors are the teeth located at the front of the mouth and are responsible for biting and cutting food. These teeth are also important for speech, as they help in pronouncing certain sounds.

In terms of eruption ages, the lower central incisors are the first to emerge, typically around 6-8 months of age, followed by the upper central incisors at around 8-12 months. The lateral incisors come in next, around 9-13 months for the upper and 10-16 months for the lower.

Incisors are typically the shortest teeth in the human mouth, with an average length of about 1-1.5 cm. They have a thin, flat surface that is designed for cutting and biting food. Incisors have a straight, rectangular shape and are usually slightly smaller and more delicate than the canines.

Overall, incisors play an important role in the initial stages of the digestive process by cutting and biting food into smaller pieces, making it easier to chew and swallow. They also have a significant impact on the appearance of a person's smile.