ArticleInternational endodontic journal2025
Ultrastructural evaluation of adverse effects on dentine formation from systemic fluoride application in an experimental mouse model.
Article in International endodontic journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Quantification of Fluoride in Serum, Bone, and Teeth in a Murine Model Using Hexamethyldisiloxane-Facilitated Diffusion and Ion-Selective Electrode Measurements.Journal of visualized experiments : JoVE · 2026Article
- Exposure to Per- and Polyfluoroalkyl Substances (PFAS) Causes Dental Developmental Anomalies: Underrecognized Risk of Fluoride Bioaccumulation.Environmental science & technology · 2026Article
- Analysis of salivary metabolites and microbial characteristics in patients with dental fluorosis.Clinical oral investigations · 2026Article
- The Effects of Exercise on Fluorosis: A Comprehensive Multisystem Review.Veterinary sciences · 2026Review
- Developmental vulnerability to fluoride toxicity: enamel and clearance differences in adolescent versus mature mice.Archives of toxicology · 2026Article
- Dental fluorosis in the European roe deer (Capreolus capreolus): A review of the pathological changes in the enamel of fluorotic cheek teeth and the abnormal pattern of dental wear in affected dentitions.Anatomical record (Hoboken, N.J. : 2007) · 2026Review
- The Impact of Environmental and Material Factors on Fluoride Release from Metal-Modified Glass Ionomer Cements: A Systematic Review of In Vitro Studies.Materials (Basel, Switzerland) · 2025Review
- Calcium and Microhardness Quantification in Healthy and Fluorotic Dentin Conditioned with a Self-Etching System: An In Vitro Study.Dentistry journal · 2025Article
- Effect of Glass Ionomer Filler Size on Fluoride Release, Antiplaque Properties, and Abrasive Effects of Toothpaste.Clinical and experimental dental research · 2025Article
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Authors and funding
12 authors.
Funding
Abstract
aimFluoride is widely used in dentistry for its caries prevention. To reduce dental caries, the optimal fluoride concentration of public water supplies in the United States is 0.7 ppm. However, excessive systemic fluoride consumption can lead to dental/enamel fluorosis. Numerous studies have explored the effects of fluoride on enamel and enamel-forming cells. However, research on systemic fluoride's impact on dentine is limited, particularly the effect of fluoride on the structure of the dentine-pulp complex. Therefore, this study aimed to identify how excessive fluoride affects dentine microstructure using an experimental mouse model. METHODOLOGY: C57BL6/J male mice (6-9 weeks old) were randomized into four groups (Fluoride at 0, 50, 100, or 125 ppm in drinking water) (n = 4/group). Mice were provided water ad libitum for 6 weeks along with fluoride-free food. Thereafter, mandibular incisors were analysed. Enamel phenotypes were evaluated using light microscopy and quantitative light-induced fluorescence (QLF) to measure fluorosis levels. Dentine morphology was evaluated using micro-CT, scanning electron microscopy (SEM), SEM-EDX (energy-dispersive X-ray), microhardness test and histological imaging. Data were analysed using one-way ANOVA with Dunnett's multiple comparisons as a post hoc test and the Kruskal-Wallis test with Dunn's multiple comparisons post hoc test (p < .05).
resultsMice treated with fluoride at 50-125 ppm developed enamel hypoplasia in their erupting incisors and micro-CT imaging revealed that fluoride 125 ppm caused external resorption of the growing incisor. Dentine mineral density, dentine volume decreased compared with the 0 ppm control, while pulp volume increased compared with the 0 ppm control group. SEM showed wider predentine layer and abnormalities in calcified matrix vesicles derived from odontoblasts in fluoride 100 and 125 ppm groups. Vickers microhardness of dentine significantly decreased in the high-dose group. Fluoride-induced dentine hypoplasia in a dose-dependent manner. Histological evaluation showed excessive fluoride 125 ppm induced micro abscess formation and inflammatory cell infiltration. Fluoride induced dentine dysplasia with a dentine microstructure resembling hypophosphatasia.
conclusionsHigh doses of systemic fluoride can cause dentine dysplasia. Both three-dimensional and microstructural analyses showed the structural, chemical and mechanical changes in the dentine and the mineralized tissue components, along with external resorption and pulp inflammation.
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