Is this normal?
As your child’s permanent teeth start to erupt, you may notice three small bumps on them. Don’t fret! These ridges or scalloped edges, called mamelons, are common for most children and are typically visible on the upper and lower central and lateral incisors.
The purpose of tooth mamelons is to help the permanent teeth push through the gum tissue more easily during eruption. Mamelons can differ between children as the ridges can be prominent or subtle in appearance and/or appear on all or only a few incisors.
There is no special treatment necessary to remove or smooth the edges once the permanent teeth are fully erupted. For most patients, the incisal edges naturally wear down and become less noticeable over time. They are actually a sign of youth!