The influence of residual salivary fluoride from dentifrice on enamel erosion: an in situ study

Abstract

The objective of this study was to assess the salivary residual effect of fluoride dentifrice on human enamel subjected to an erosive challenge. This crossover in situ study was performed in two phases (A and B), involving ten volunteers. In each phase, they wore acrylic palatal appliances, each containing 3 human enamel blocks, during 7 days. The blocks were subjected to erosion by immersion of the appliances in a cola drink for 5 minutes, 4 times a day. Dentifrice was used to brush the volunteers' teeth, 4 times a day, during 1 minute, before the appliance was replaced into the mouth. In phases A and B the dentifrices used had the same formulation, except for the absence (PD) or presence (FD) of fluoride, respectively. Enamel alterations were determined using profilometry, microhardness (%SMHC), acid-and alkali-soluble F analysis. The data were tested using ANOVA (p < 0.05). The concentrations (mean SD) of alkali-and acid-soluble F ( gF/cm2) were, respectively, PD: 1.

Efficacy of Stannous Ions on Enamel Demineralization under Normal and Hyposalivatory Conditions: A Controlled Randomized in situ Pilot Trial

“…In the presence of saliva, the stannous ions interact not only with mineralized tissue, but also with proteins of the acquired pellicle [Huysmans et al, 2011;Rakhmatullina et al, 2013;Bellamy et al, 2014], like mucins and albumins [Algarni et al, 2015]. Such an interaction can lead to an increase in pellicle thickness [Algarni et al, 2015] resulting in a stronger barrier against acids [Buzalaf et al, 2008;Hara et al, 2014]. These findings support the above hypothesized relevance of pellicle thickness.…”

“…Most studies investigated the in situ effect in persons with a normal saliva flow rate [Magalhães et al, 2008;Hara et al, 2009;Wiegand et al, 2010;Schlueter et al, 2013;Hove et al, 2014;Stenhagen et al, 2014], showing the effect under more or less healthy conditions. The novelty of the present study is, however, to investigate the toothpastes' effect in persons with an extremely low flow rate (xerostomia).…”

Primary prevention of dental erosion by calcium and fluoride: a systematic review

“…The third article evaluated the protective effects of experimental fluoride‐based toothpastes against dental erosion. The fourth article evaluated the salivary residual effect of fluoride dentifrice on enamel erosion.…”

Prevention of dental erosion of a sports drink by nano‐sized hydroxyapatite in situ study

“…Fluoride is known to prevent dental erosion. The sodium fluoride remaining in the oral cavity after tooth brushing, however, did not affect the SMH of teeth and inhibited dental erosion caused by acidic drinks 27 . In addition, the toothpaste containing sodium monofluorophosphate was not effective in reducing dental erosion caused by acidic drinks 28 .…”