Influence of Acidified Fluoride Gel on Abrasion Resistance of Eroded Enamel

Abstract

The objective of the study was to evaluate the abrasion resistance of eroded enamel brushed with an acidified fluoride gel. Each enamel specimen was prepared from one of 64 bovine incisors. The specimens were embedded in acrylic resin, ground flat, polished and subsequently covered with a tape exposing an area of 1.8×10.0 mm in the center of the enamel specimens. The samples were alternatingly stored in a demineralizing solution (5 min) and a remineralizing solution (1min) four times. An acidic soft drink (Sprite Light^®) served as a demineralizing solution and artificial saliva was used as a remineralizing solution. After each remineralization the specimens were brushed in an automatic brushing machine (2,000 strokes, 2.5 N load) and subsequently stored again in saliva (1 min). A mixture of artificial saliva (5 ml) with a gel (1 ml) based on the formulation of Elmex^® gelée (Wybert, Lörrach, Germany) served as an abrasive slurry. Thirty seconds after brushing, the slurry was removed from the specimens by rinsing with destilled water. For each of 16 specimens the following gels (A–D) were used: gels A (pH 7.0) and B (pH 4.5) were unfluoridated; gels C (pH 7.0) and D (Elmex gelée; pH 4.5) contained 1.25% F^–. After two cycles the specimens were kept in the saliva for 8 h. Finally the tape was removed and the abrasion was determined profilometrically. The following values (mean ± SD) were obtained and statistically analyzed by analysis of variance and Wilcoxon two–sample tests (p≤0.01): gel A, 0.96±0.24 μm; B, 1.58±0.32 μm; C, 0.71±0.23 μm; D, 0.25±0.08 μm. The differences between all experimental groups were statistically significant. It is assumed that treatment of enamel erosions with an acidified fluoride gel results in a higher abrasion resistance compared to gels which are either unfluoridated or neutral.

The effect of casein phosphopeptide‐amorphous calcium phosphate on erosive dentine wear

“…3 Given that there has been an increase in the prevalence of erosive tooth wear (referring to tooth wear by erosion combined with mechanical factors, such as attrition and toothbrush abrasion), and an increase in the longevity of teeth in recent decades, clinical management should focus on early detection and prevention before a restorative approach is considered. 4 Previous reports have indicated that topical fluoride can protect enamel and dentine against erosion 5,6 and a combination of erosion and toothbrush abrasion, [7][8][9] but not against attritional wear between opposing enamel and dentine specimens. 10 Recently, Tooth Mousse (GC Corporation, Japan) whose principal ingredient is an anticariogenic remineralizing agent CPP-ACP (casein phosphopeptide-amorphous calcium phosphate nanocomplexes) has been recommended for the management of dental erosion.…”

Epidemiological studies of tooth wear and dental erosion in 14-year-old children in North West England. Part 1: The relationship with water fluoridation and social deprivation

“…4 The influence of topical fluoride on the degree of abrasion of acid eroded enamel has been investigated. 5,6 Enamel blocks cycled between 5 min acid immersion and linear tooth brushing resulted in significantly less wear with the fluoride toothpaste compared with an otherwise identical non-fluoride formulation. 5 Brushing eroded bovine enamel with acidulated fluoride gels with a pH of 4.5 and 7.0 were compared with unfluoridated gels with the same pHs.…”

Susceptibility of Enamel Treated with Bleaching Agents to Mineral Loss After Cariogenic Challenge

“…Attin et al (Attin et al, 1999) reported that, fluoridation was effective in increasing resistance of enamel against demineralization by erosive substances. Similarly, the findings of this present study demonstrated that the resistance of enamel against the erosive demineralization caused by 38% HP application was increased after 1% TiF 4 treatment.…”