Abstract
Using one artificial saliva, and both 3 kinds of liquid and 2 kinds of jelly oral moisturizers, the relationship between viscosity and water retainability was studied. The viscosities were measured with a ViSmart viscometer and the water retainability was assessed from the residual rates of both the water content on the filter paper surface and the weight. Both residual rates of glycerin increased with the increase of viscosity, depending on the concentration. The residual rates of weight in artificial saliva, SalivateⓇ, liquid oral moisturizers, KinusuiⓇ, Wet CareⓇ and Stoppers forⓇ and jelly oral moisturizer, Refre-CareⓇ H and Oral BalanceⓇ increased in parallel with the increase ofviscosity. From these results, it was suggested that the viscosities of artificial saliva and oral moisturizers might increase in parallel with the increase of residual rates of weight rather than the increase of the water content on the filter paper surface.
