How long does a common mouth ulcer usually take to heal?

The healing time for oral ulcers varies depending on individual differences, the severity of the ulcer, and the treatment methods used. Generally, simple oral ulcers heal within 7 to 14 days. If the ulcer is small, superficial, and the patient has strong immunity, the recovery period may be relatively shorter, possibly around 7 days. However, for larger and deeper ulcers, the healing time may extend to 10 days or longer. Additionally, if the oral ulcer is caused by specific factors such as vitamin or trace element deficiencies, or poor oral hygiene, the recovery time may also be affected. Therefore, when oral ulcers occur, it is recommended that patients seek medical attention promptly and follow the treatment and care advice provided by their healthcare provider to promote ulcer healing.