How to Use hydroxyapatite in a Sentence

hydroxyapatite

noun
  • The basis for the construct was an artificial bone structure made of hydroxyapatite, which is a natural mineral found in bones and teeth.
    — Mrigakshi Dixit, Interesting Engineering, 19 Nov. 2025
  • This fluoride-free toothpaste contains nano-hydroxyapatite, a mineral form of the same ingredient that makes up 97% of tooth enamel and 70% of dentin.
    — Bestreviews, Mercury News, 26 Mar. 2026
  • That’s the idea behind familiar ingredients like fluoride, as well as newer formulas built around calcium, phosphate or hydroxyapatite.
    — Ryan Brennan, Fort Worth Star-Telegram, 20 Oct. 2026
  • The dentine and cementum, in turn, are made up of microscopic collagen fibrils mineralized with nanoparticles of hydroxyapatite.
    — Jennifer Ouellette, ArsTechnica, 18 Aug. 2026
  • Products that contain nano-hydroxyapatite, a material similar to natural tooth enamel.
    — Andrea Kane, CNN Money, 5 Feb. 2026
  • The results showed that the collagen fibrils and hydroxyapatite nanoparticles orient themselves along the tusk’s longitudinal axis, so there is a consistently high degree of anisotropy at all scales.
    — Jennifer Ouellette, ArsTechnica, 18 Aug. 2026
  • Tooth enamel is the hardest part of the entire mammal skeleton; 97 percent of it is hydroxyapatite, the hard mineral component of bone (most bone tissue is only about 40 to 70 percent hydroxyapatite).
    — ArsTechnica, 2 June 2026
  • Most enamel-repair products rely on remineralization, which puts minerals back into weakened enamel using ingredients like fluoride, calcium, phosphate or hydroxyapatite.
    — Ryan Brennan, Miami Herald, 20 Oct. 2026

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydroxyapatite.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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