What Causes Recurrent Mouth Ulcers?

Occasional mouth ulcers that resolve within a few days are generally not cause for concern or fear. However, some individuals experience recurrent oral ulcers. So, what causes frequent occurrences of mouth ulcers?

What Causes Frequent Mouth Ulcers?

In general, recurrent oral ulcers may be associated with factors such as malocclusion, compromised immunity, or residual tooth roots in the oral cavity. Patients are advised to seek timely medical evaluation to identify the underlying cause and initiate appropriate treatment promptly, thereby preventing disease progression. A detailed analysis follows:

1. Malocclusion

Patients with abnormal occlusion or disordered tooth alignment may inadvertently bite and traumatize the oral mucosa during chewing, leading to ulcer formation. This issue can often be resolved through occlusal adjustment or orthodontic treatment.

2. Reduced Immunity

Chronic unbalanced nutrition and sleep disturbances can lead to malnutrition and diminished immune function. Individuals with weakened immunity are more prone to recurrent oral ulcers. Management involves targeted immunomodulatory medications—such as pidotimod dispersible tablets or amoxicillin capsules—alongside topical treatments like watermelon frost spray.

3. Residual Tooth Roots

If residual tooth roots remain in the oral cavity, repeated tongue contact—especially when the tongue passes over the sharp edges of these roots—may cause traumatic injury, resulting in persistent, non-healing traumatic ulcers. Treatment requires removal of local irritants: smoothing sharp cusps or extracting large residual roots, after which the ulcer typically heals gradually.

Beyond the above, recurrent oral ulcers may also indicate oral cancer.