“…The most important ones are the sensation of a dry mouth, difficulties in oral func tioning (mastication, swallowing, and speech), nocturnal oral discomfort, and a burning sensation of the oral mucosa and tongue [Bertram, 1967;Mason and Chis holm, 1975). Synthetic salivas containing carboxymethylcellulose (CMC) or mucin and salts in equivalent concentrations as in mixed human saliva, and sweetened with sorbitol or xylitol, have been used in the management of the dry mouth syn drome [Matzker and Schreiber, 1972;' s-Gravenmade et al, 1974;Shannon et al, 1977]. These substitutes have been shown to reduce the patients' complaints of xer ostomia [Klestovet al, 1981;Vissink et al, 1983].…”