What is second pre molar?

The second pre-molar is a tooth located between the first pre-molar and the first molar. It is also known as the second bicuspid or the 2nd premolar. In the adult human mouth, there are a total of four second premolars, two on the upper jaw and two on the lower jaw.

Second premolars usually have two cusps (points or peaks): a larger one towards the front and a smaller one towards the back. Its function is to grind food in preparation for swallowing. Second premolars typically erupt during adolescence, around the ages of 11-12 years old. They have a lifespan of around 20-25 years, on average, before they may need to be replaced with a dental implant or a bridge.

In dentistry, the second premolar is an important tooth in the treatment of malocclusion (improper bite). It is often included in orthodontic treatment plans to help correct issues with crowding, spacing, and other alignment problems. The second pre-molar can also be damaged by cavities or fractures, and may require fillings, crowns, or other restorative treatments to maintain its function and health.