Tooth mobility refers to the movement of a tooth within its socket in the jawbone. Healthy teeth are firmly anchored, but various factors can cause them to become loose. These factors include gum disease, trauma, or bone loss, which can affect the supporting structures of the tooth. When a tooth is mobile, it may indicate underlying dental issues that require attention. Dentists often assess tooth mobility during check-ups to determine the health of the gums and bone surrounding the teeth. Early intervention can help prevent further complications and maintain overall oral health.