Genetics, it is hereditary, you can very easily fix the look with veneers, or a crown.
peg laterals are not harmful to your health. you may 'treat' this problem by building layers of composite (tooth restorative material) on top of the peg lateral and shape it to an aesthetically more acceptable lateral incisor. jimmehhh
do it
Peg laterals are hereditary.
according to NBDE part 1 deck cards (#150) maxillary canines
The lateral incisor is the second tooth from the center of the mouth, located next to the central incisor. In the dental arch, there are four lateral incisors—two in the upper jaw (maxilla) and two in the lower jaw (mandible). These teeth are designed for cutting and have a narrower, more pointed shape compared to the central incisors. Typically, they erupt between the ages of 7 and 8 years.
No sets, just two lateral incisors on the mandible one on the right side and one on the left side of the face. You would of course have had a baby lateral incisor( called deciduous lateral )when you were a child, they are lost by the age of six or seven and are replaced for life. So take care don't lose them!
The average size of a maxillary lateral incisor typically measures about 22-26 mm in length and 7-8 mm in width. Variations can occur based on individual anatomical differences and demographic factors. Generally, it is smaller than the maxillary central incisor but retains a similar shape and structure.
tooth 7, according to the universal system of tooth notation is maxillary right lateral incisor
a chisel shaped tooth is a tooth that is sharper than your other teeth. an example of a chisel shaped tooth is your incisor.
The incisors.
The axis (C2) bears a peg-shaped dens that acts as a pivot, it is part of the cervical vertebrae.
lateral incisor and first premolar