left lower first secondary premolar tooth

The left lower first secondary premolar is a permanent tooth that erupts around 10-12 years of age, replacing the primary first molar with a single cusp and typically single root.

It is located in the mandible on the left side, distal to the canine in the premolar region of the lower jaw.

It functions to tear and grind food during mastication, providing transitional chewing function between canines and molars.

It is attached to the mandible by a periodontal ligament and root, and occludes with the upper first and second premolars.

It is commonly extracted for orthodontic space management, important for balanced posterior occlusion, and is subject to caries and periodontal disease throughout life.