Types of Incisors in Dentistry

Study Notes

Incisors

Incisors are some of the most commonly known types of teeth, located at the front of our upper and lower jaws. These teeth are responsible for biting off food from both sides of your mouth, and they are also essential for cutting and shaping various foods. The primary function of incisors is similar to using scissors or a knife when eating solid foods. Incisors have flat surfaces on their biting edges and sharp edges near their tips.

There are four types of permanent incisors: two central incisors (upper and lower), and two lateral incisors (upper and lower). Here's a closer look at each type:

Central incisors: These teeth are placed right in between the canines, meaning they are the first teeth we see when we smile. They work together with their counterparts on the opposite side to cut through food.
Lateral incisors: These teeth share similar functions with the central incisors, but they have slightly different shapes. Central incisors often have a more rounded tip while lateral incisors are pointed, which helps them perform specific tasks like slicing and piercing.

The shape, size, and arrangement of these permanent incisors vary among individuals due to genetic factors and influences on development during fetal growth.

Temporary Incisors

Temporary incisors, also called baby teeth or deciduous teeth, typically appear around six months of age. These teeth are smaller than their adult counterparts and often have thinner enamel layers. Some common conditions affecting temporary incisor development include hypodontia (missing tooth) and peg laterals (with a reduced width or length).

Despite being smaller and less durable, temporary incisors play a crucial role in dental development. They help children learn how to chew food properly, maintain adequate oral space for incoming permanent teeth, and contribute to proper speech development.

Summary and Key Points

Here's a summary of the information covered in this section:

Incisors are located at the front of upper and lower jaws.
They are responsible for biting off food from both sides of the mouth.
There are four types of permanent incisors: two central incisors (upper and lower), and two lateral incisors (upper and lower).
Temporary incisors, also called baby teeth or deciduous teeth, typically appear around six months of age.
They help children learn how to chew food properly, maintain adequate oral space for incoming permanent teeth, and contribute to proper speech development.

Description

Learn about the different types of incisors, their functions, and roles in both temporary and permanent dentition. Explore how incisors help in cutting, biting, and shaping food, as well as their significance in oral development.