When the gum margin moves away from the crown of a tooth, part of the root becomes exposed. You may notice a longer-looking tooth, a notch near the gum line, or sensitivity to cold. Recession can occur around a single tooth or throughout the mouth, and the amount you can see does not explain the cause by itself.
An assessment considers periodontal health, tooth position, tissue thickness, cleaning habits, and any changes over time. The aim is to separate a stable area that can be protected and monitored from a site with ongoing inflammation, root damage, or a problem that may benefit from a periodontal opinion. Treatment is selected for the actual concern—comfort, disease control, tissue protection, or appearance—rather than assuming every exposed root needs the same procedure.