ArticleInternational dental journal2026
Real-Time Assessment of Dentinal Fluid Flow Reduction by Desensitising Agents Using Subnanolitre Flow Measuring System.
Article in International dental journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThis study aimed to evaluate and compare the dentinal tubule-occluding efficacy of various desensitising toothpastes and a sodium fluoride varnish using a subnanolitre scaled fluid flow measuring device (NFMD).
methodsBovine dentin specimens were treated with four desensitising toothpastes (Colgate, Median, Bamboo Salt, and Sensodyne), a 2.1% sodium fluoride professionally-deliverable varnish (Clinpro), and distilled water (DW). Real-time dentinal fluid flow (DFF) was measured under simulated pulpal pressure (32 cm H₂O) for 1000 seconds using the NFMD system. Each toothpaste was applied directly to assess its chemical occlusion capability, with measurements recorded before, during, and after material removal. Surface morphology and the extent of tubule occlusion were examined using field-emission scanning electron microscopy (FE-SEM) in both cross-sectional and surface views. Data were analysed by one-way analysis of variance.
resultsA significant overall treatment effect was observed (P < .001). Bamboo Salt, Sensodyne, and Colgate showed greater mean reductions than Clinpro, whereas Median did not outperform the DW group. SEM findings supported these trends, revealing substantial tubule occlusion for Bamboo Salt and Sensodyne and minimal occlusion for Median and DW.
conclusionDesensitising toothpastes reduced dentinal permeability to levels comparable to a sodium fluoride varnish. Real-time fluid flow measurement using NFMD enabled functional validation of dentinal tubule occlusion beyond surface morphology. CLINICAL RELEVANCE: Commonly available desensitising toothpastes can provide meaningful reductions in dentinal permeability. Understanding how different formulations interact with exposed dentin may help guide product selection based on a patient's specific needs. Real-time assessments of dentinal fluid movement may also assist in evaluating emerging desensitising technologies.
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