Which type of tooth is closest to the midline in an arch?

The central incisor is the type of tooth that is closest to the midline in an arch. In dental anatomy, the midline refers to an imaginary vertical line that divides the mouth into left and right halves. The central incisor, which is located at the front center of the dental arch, plays a crucial role in the aesthetic and functional aspects of the anterior teeth.

This tooth is primarily responsible for cutting food and is typically the first tooth that is visible when a person smiles. Its position at the midline allows for an even distribution of teeth on either side and facilitates proper alignment and occlusion. Understanding the positioning of various types of teeth is essential for dental professionals in areas such as orthodontics, restorative dentistry, and general practice.