Is there any relationship between recurrent oral aphthous stomatitis and prediabetes?

Periodontal disease has been associated with glycaemia. Recurrent aphthous stomatitis (RAS) is one of the most common oral lesions and is characterized by painful recurrent oral ulcers. However, the exact cause and treatment of RAS is not yet well-known. Furthermore, there is still unknown the relationship between RAS and glycaemia. Prediabetes has shown to have role on worse metabolic profile. However, there is still no data on the relationship between prediabetes and clinical RAS. Therefore, the purpose of this hypothesis is to assess whether the prediabetes aggravate RAS.