Daily use of dentifrice with and without xylitol and fluoride: effect on glucose retention in humans in vivo

The effect of daily use of three different dentifrices on glucose retention after glucose mouth rinsing was tested in this study regarding xylitol and fluoride. Six experimental groups used three different dentifrices produced by two different companies: xylitol- and fluoride-containing dentifrice (XF), non-xylitol- and fluoride-containing dentifrice (F), and non-xylitol- and non-fluoride-containing dentifrice (NonX–NonF). ts were divided at random and rinsed their mouths for 15 s with 20 ml of 0.5 M glucose solution. Glucose and lactate retention were determined by collecting samples of saliva from the approximal areas of the maxillary and mandibular anterior teeth and using the enzyme membrane test. Samples were collected 0, 1 and 2 months after the start of regular dentifrice use. were significant differences in glucose retention in relation to the dentifrice used, month of sampling, site of sampling, and time since start of rinsing. Their contribution ratios were 2.0, 4.4, 11.7 and 7.4%, respectively (P<0.01). There were significant differences observed between the XF and NonX–NonF groups, with the XF group presenting lower glucose retention than the NonX–NonF group. The XF group presented lower glucose retention than the F group. The F group showed lower glucose retention than the NonX–NonF group. There were significant differences in lactate retention in relation to the month and site of sampling, and their contribution ratios were 3.3 and 2.8%, respectively (P<0.01). There were, however, no significant differences in glucose and lactate retention in relation to the dentifrice manufacturer. concluded that the XF dentifrice was the most effective, and the F dentifrice was more effective in reducing glucose retention than the NonX–NonF dentifrice.