In the coming decades the western world will experience a double ageing of its population; there will be an increase in both the number of older people and the average age. The increase in life expectancy will also mean more and more older people who suffer from multiple systemic diseases that are treated with medications. At this moment, 45% of those over 65 use 5 or more medications and 20% of those over 75 use as many as 10 or more. The more medications used, the greater the risk of side effects and therefore oral side effects, like symptoms of dry mouth or the development of candidiasis, angioedema, gingival hyperplasia, lichenoid reaction of the oral mucosa, dysgeusia, halitosis and osteonecrosis. Considering the wide range of oral sid...