Among these pathologies, DM stands out as a common serious age-related disease. It is estimated that 17.4% of Brazilians aged between 60–69 years have diabetes. In the US, over 25% of the population aged ≥65 years have diabetes, while in France the prevalence is estimated to be 14.2% . In addition to common chronic complications like heart disease, nephropathy, neuropathy and retinopathy, DM has been associated with oral complications such as periodontal disease (PD), hyposalivation and xerostomia–or dry mouth .