Randomised study of the effects of fluoride and time on in situ remineralisation of acid-softened enamel
dc.contributor.author | Nehme, M. | |
dc.contributor.author | Parkinson, C. R. | |
dc.contributor.author | Zero, D. T. | |
dc.contributor.author | Hara, A. T. | |
dc.contributor.department | Cariology, Operative Dentistry and Dental Public Health, School of Dentistry | en_US |
dc.date.accessioned | 2020-06-26T17:07:25Z | |
dc.date.available | 2020-06-26T17:07:25Z | |
dc.date.issued | 2019-04 | |
dc.description.abstract | Objectives This single-centre, randomised, crossover study used a short-term in situ dental erosion remineralisation model to explore the remineralisation of acid-softened enamel in the 4-h period immediately following brushing with an anti-erosion, dentin hypersensitivity test dentifrice containing 1150 ppm fluoride (as sodium fluoride [NaF]) or a placebo dentifrice with no fluoride. Materials and methods Fifty participants wearing a palatal appliance holding surface-softened bovine enamel specimens brushed their natural teeth with their assigned dentifrice. Specimens were removed at 5-, 10-, 15-, 30-, 60-, 120- and 240-min post brushing. Enamel remineralisation effect was evaluated at each timepoint by percent surface microhardness recovery (%SMHR) and enamel fluoride uptake (EFU). After a second in vitro erosive challenge, the percent relative erosion resistance (%RER) was calculated. Results Statistically significant differences in %SMHR were observed for the test dentifrice compared with the placebo dentifrice from the 60-min timepoint onwards (all p < 0.02; mean difference of 8.66 [95% CI 3.46, 13.87] at 60 min). At each specimen removal time, %RER and EFU were statistically significantly higher for the test dentifrice compared with the placebo dentifrice (p < 0.0001 for all). No treatment-related or serious adverse events were reported. Conclusions The NaF-containing anti-erosion, dentin hypersensitivity dentifrice improved remineralisation of acid-softened enamel starting at 60 min of intra-oral exposure. It also improved enamel erosion resistance and fluoride uptake as early as 5 min after exposure to fluoridated dentifrice slurry. | en_US |
dc.eprint.version | Final published version | en_US |
dc.identifier.citation | Nehme, M., Parkinson, C. R., Zero, D. T., & Hara, A. T. (2019). Randomised study of the effects of fluoride and time on in situ remineralisation of acid-softened enamel. Clinical Oral Investigations, 23(12), 4455–4463. https://doi.org/10.1007/s00784-019-02900-5 | en_US |
dc.identifier.uri | https://hdl.handle.net/1805/23118 | |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_US |
dc.relation.isversionof | 10.1007/s00784-019-02900-5 | en_US |
dc.relation.journal | Clinical Oral Investigations | en_US |
dc.rights | Attribution 4.0 International | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.source | Publisher | en_US |
dc.subject | dental erosion | en_US |
dc.subject | dentifrice | en_US |
dc.subject | fluoride | en_US |
dc.title | Randomised study of the effects of fluoride and time on in situ remineralisation of acid-softened enamel | en_US |
dc.type | Article | en_US |