The potential impact of OD on salivary composition has never been studied. Several studies linking saliva and perception or preferences have been conducted in the UMR CSGA (Unité Mixte de Recherche du Centre des Sciences du Goût et de l'Alimentation). They have already contributed to highlight the great inter-individual variability for a number of saliva markers and a change in saliva protein profiles in response to taste stimulation They also underlined the remarkable intra-stability for saliva flow and composition during a one year study.