A tooth that feels 'longer' often points to a problem with the surrounding tissue. This sensation usually arises from inflammation of the gums or the tip of the root. The swelling effectively pushes the tooth out of its position. This can cause pain when biting or touching the tooth. Trauma or overloading can also produce a similar sensation. An X-ray helps to establish the cause. Treatment may consist of a cleaning, root canal treatment or adjusting the bite. Do not ignore this symptom, as it may indicate an infection or nerve damage. Your dentist can quickly assess what is going on. Early treatment prevents more serious complications.
Periodontology - Symptoms and Diagnosis
Why does my tooth feel longer than normal?
Inflammation or trauma can cause swelling that makes a tooth seem higher.