Related Experiment Video
Updated: Feb 2, 2026

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
Published on: February 23, 2017
Effect of Fluoride Treatment on the Acid Resistance of Hydroxyapatite
Thomas Faidt1, Andreas Friedrichs1, Samuel Grandthyll1
1Experimental Physics , Saarland University , Campus E2 9 , 66123 Saarbrücken , Germany.
Abstract:
The etching behavior of polycrystalline synthetic hydroxyapatite samples has been evaluated to explore the protective impact of fluoride on a tooth-like model system. Etching rates before and after fluoridation with a NaF solution at pH 6 were determined by atomic force microscopy. Despite a very low F concentration of ca. 0.2 atom % in the hydroxyapatite surface, a very strong effect on the acid resistance can be observed. Depending on the crystal orientation, etching in a NaAc buffer at pH 4.5 was completely inhibited for at least 5 min. The major part of the surface withstood etching even for more than 23 min. These results give new insights into how the amount of incorporated fluoride in hydroxyapatite correlates with its protective impact.
More Related Videos
13:46Separation of Single-stranded DNA, Double-stranded DNA and RNA from an Environmental Viral Community Using Hydroxyapatite Chromatography
Published on: September 29, 2011
07:14Synthesis of Graphene-Hydroxyapatite Nanocomposites for Potential Use in Bone Tissue Engineering
Published on: July 27, 2022
Related Concept Videos
Treatment Resistant Cancers
Resistivity
Resistance
Equivalent Resistance
Resistance and Conductance
Various factors impact the resistance of a conductor. Spiraling in stranded conductors increases their...
Rolling Resistance
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...