Author:
Creeth Jonathan E.,Burnett Gary R.,Souverain Audrey,Gomez-Pereira Paola,Zero Domenick T.,Lippert Frank,Hara Anderson T.
Abstract
Abstract
Background
A novel sodium fluoride toothpaste containing lactate ion and polyvinylmethylether-maleic anhydride has been developed to promote enamel remineralisation and resistance to demineralisation. In this in situ study, we compared this toothpaste (‘Test’) with a stannous fluoride-zinc citrate (SnF2-Zn) toothpaste (‘Reference’) (both 1100–1150 ppm fluoride) and a fluoride-free toothpaste (‘Placebo’) using an enamel dental erosion-rehardening model.
Methods
In each phase of this randomised, investigator-blind, crossover study, participants wore palatal appliances holding bovine enamel specimens with erosive lesions. They brushed their natural teeth with either the Test, Reference or Placebo toothpastes, then swished the resultant slurry. Specimens were removed at 2 h and 4 h post-brushing and exposed to an in vitro acid challenge. Surface microhardness was measured at each stage; enamel fluoride uptake was measured after in situ rehardening. Surface microhardness recovery, relative erosion resistance, enamel fluoride uptake and acid resistance ratio were calculated at both timepoints.
Results
Sixty two randomised participants completed the study. Test toothpaste treatment yielded significantly greater surface microhardness recovery, relative erosion resistance and enamel fluoride uptake values than either Reference or Placebo toothpastes after 2 and 4 h. The acid resistance ratio value for Test toothpaste was significantly greater than either of the other treatments after 2 h; after 4 h, it was significantly greater versus Placebo only. No treatment-related adverse events were reported.
Conclusions
In this in situ model, the novel-formulation sodium fluoride toothpaste enhanced enamel rehardening and overall protection against demineralisation compared with a fluoride-free toothpaste and a marketed SnF2-Zn toothpaste.
Trial registration
ClinicalTrials.gov; NCT03296072; registered September 28, 2017.
Publisher
Springer Science and Business Media LLC
Reference30 articles.
1. Bartlett D. Intrinsic causes of erosion. Monogr Oral Sci. 2006;20:119–39.
2. Lussi A, Schlueter N, Rakhmatullina E, Ganss C. Dental erosion--an overview with emphasis on chemical and histopathological aspects. Caries Res. 2011;45(Suppl 1):2–12.
3. Amaechi BT, Higham SM. In vitro remineralisation of eroded enamel lesions by saliva. J Dent. 2001;29:371–6.
4. Attin T, Knofel S, Buchalla W, Tutuncu R. In situ evaluation of different remineralization periods to decrease brushing abrasion of demineralized enamel. Caries Res. 2001;35:216–22.
5. Wiegand A, Muller I, Schnapp JD, Werner C, Attin T. Impact of fluoride, milk and water rinsing on surface rehardening of acid softened enamel. An in situ study. Am J Dent. 2008;21:113–8.
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献