Oral mucosal ulcers can determine a real worsening of the quality of life. Conventional therapy usually lasts not less than 2-3 weeks, and carries a high risk of serious side effects; furthermore, ulcers often recur. The use of hyaluronic acid applied as an adhesive gel over the lesions seems to have potential in terms of efficacy and the avoidance of side effects. Of course, hyaluronic acid-based formulations show different effects and tolerability. In this retrospective observational study, the results obtained using a hyaluronic-acid based medical device applied for 14 days to counteract ulcers in adults will be reported.

Inclusion Criteria:

• Diagnosis of aphthous stomatitis
• Healthy for other conditions excluding aphthous stomatitis

Exclusion Criteria:

• Taking one of the following in the 45 days prior to the beginning of the study: immunosuppressive, cytotoxic, cortisone, antibiotic, antifungal, hormone therapy (including birth control pills).

Adult subjects without ethnic limitations, of both sexes and between the ages of 18 and 65, with a diagnosis of aphthous stomatitis, but considered otherwise healthy.