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What characterizes a peg-shaped lateral incisor?

  1. It has a cone-shaped crown.

  2. It is the largest tooth in the mouth.

  3. It is the strongest enamel tooth.

  4. It has multiple roots.

The correct answer is: It has a cone-shaped crown.

A peg-shaped lateral incisor is characterized by having a cone-shaped crown. This unique shape is a result of dental development abnormalities that lead to an unusually small, pointed incisor. The shape resembles a peg or a cone, hence the name. This condition is often hereditary and can lead to aesthetic concerns and functional challenges. The other options do not accurately describe the characteristics of a peg-shaped lateral incisor. For instance, it is not the largest tooth in the mouth; that title typically belongs to the molars. Additionally, teeth with the strongest enamel are usually the molars, which have a different structure and purpose than incisors. Lastly, peg-shaped lateral incisors have a single root, unlike some teeth that may have multiple roots which are typically found in molars.