A study in vitro of the combined effects of soft drinks and tooth brushing with fluoride toothpaste on the wear of dentine

Abstract

The aim of this study was to measure loss of dentine produced by soft drinks alone and combined with tooth brushing with and without toothpastes. Groups of flat human dentine specimens were exposed for 10 min and then 30 min to orange juice (OJ), carbonated cola (CC) or modified blackcurrant (MB) drinks alone or after the exposures brushed with a fluoride toothpaste for 10 s. Further groups were exposed to OJ as before but brushed with water or non-fluoride toothpaste or placed in slurries of fluoride paste. Five cycles of each regimen were carried out. Tissue loss was determined by profilometry. Water immersion/brushing and brushing controls were included. OJ and CC produced similar erosion and significantly more than MB. Compared with drinks alone, dentine loss was reduced by fluoride toothpaste brushing but increased by water and non-fluoride toothpaste brushing. Fluoride toothpaste slurry had no significant effect on soft drink erosion. Very little abrasion with brushing alone was recorded over the time frame of these experiments. It is concluded that fluoride toothpaste could provide protection, albeit small, against erosion. The data again support the concept of brushing before meals.

Prevalence and risk factors for dental erosion among 11- to 14-year-old school children in South India

“…Rios et al (22) stated that even some kinds of toothpastes accelerate tooth wear due to the removal of superficial enamel layer. Ponduri et al (23) reported that non-fluoride toothpaste could increase dentine loss compared with drinks alone. On the contrary; fluoride and re-mineralizing toothpastes (containing NaF, calcium, phosphate, and fluoride ions) are effective in inhibiting enamel erosion.…”

Dental erosion and severe tooth decay related to soft drinks: a case report and literature review

“…Non-fluoride toothpaste could increase dentine loss compared with drinks alone (Ponduri et al, 2005). Whitening dentifrice also leads to significantly greater wear of sound enamel and of both eroded and sound dentine (Turssi et al, 2004).…”

Use of dentifrices to prevent erosive tooth wear: harmful or helpful?

“…44 However, the incorporation of new hydroxyapatite into demineralized enamel is 30% reduction in wear when compared with a placebo). 26,27 Based on these findings, highly concentrated fluoride dentifrices (5000 ppm F, NaF) have been tested, but the results obtained so far are inconclusive. In an in situ study, a commercial dentifrice with 5000 ppm F had the same positive effect as another commercial 1100 ppm F dentifrice (NaF) on eroded and eroded-abraded dentin.…”