27/05/2026
A tooth can survive the initial injury — then suddenly darken years later.
Dental trauma from childhood falls, sports injuries, accidents, or unnoticed hits to the mouth can silently damage the blood supply and nerve inside a tooth. Over time, the internal tissues may break down, causing the tooth to gradually turn gray, dark brown, or even black.
Many people are surprised when this happens long after the original injury, especially if the tooth never caused severe pain. But discoloration affecting a single tooth is often a warning sign that the inside of the tooth is no longer healthy.
The good news is that dentists can usually diagnose the cause with an examination and X-rays. Depending on the condition, treatment may include root canal therapy, internal bleaching, crowns, or other restorative procedures.
A dark tooth is not always “just staining.” Sometimes it tells the story of an old injury the tooth never fully recovered from.
