Tissue-on-tissue lubricity studies of saliva substitutes as-supplied, mixed with and compared with human saliva from control and xerostomia patients

The saliva in dry mouth subjects worked as well as that of the controls in providing lubricity. Their interaction with the saliva substitutes was similar to the behavior of that of the controls with the substitute. Based on the statistical analysis, it is likely that saliva in dry mouth subjects differs from that in normal healthy individuals in quantity alone and not quality.