Nano-mechanical properties of fluoride-treated enamel surfaces

Y. R. Jeng, T. T. Lin, T. Y. Wong, H. J. Chang, D. B. Shieh

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


Calcium-fluoride-like deposits play a key role in caries prevention by topical fluoride. Previous microhardness analyses have introduced errors due to a substrate effect, and thereby could not substantiate the early loss of these deposits. To address this question, we applied Atomic Force Microscopy (AFM) and a nano-indentation technique in this study to characterize the nanomechanical properties and topographic structure of enamel surfaces following topical fluoride treatment. The deposits were found to have a low nano-hardness and a high nano-wear depth, which explains the early loss of calcium-fluoride-like deposits. However, a 22% increase in the fluoride concentration could still be detected on the treated enamel surface following the removal of the surface deposits, justifying the long-term effectiveness of topical fluoride treatment.

Original languageEnglish
Pages (from-to)381-385
Number of pages5
JournalJournal of Dental Research
Issue number4
Publication statusPublished - 2008 Apr

All Science Journal Classification (ASJC) codes

  • Dentistry(all)


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