Journal ArticleDOI
Influence of fluoride on the rate of dissolution of hydroxyapatite in acidic buffer solution.
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TLDR
The results indicate that the influence of F–– on HA solubility cannot be attributed to CaF2 (either as a layer or as discrete crystallites) or to a fluorapatite layer and suggest that the rate of HA dissolution is modified by a rapidly attained F–– equilibrium at the dissolving surface.Abstract:
The solubility of powdered hydroxyapatite (HA) in acidic buffer solution (pH 4.65) was reduced by 71% by adding sufficient fluoride (F––; either by previously treating the HA with NaF solution or by introducing NaF at the start of the dissolution) to replace approximately 25% of all surface unit cell OH–– ions. The same amount of F–– was less effective if added as NaF after the start of the dissolution. Addition of CaF2 had no effect. The results indicate that the influence of F–– on HA solubility cannot be attributed to CaF2 (either as a layer or as discrete crystallites) or to a fluorapatite layer and suggest that the rate of HA dissolution is modified by a rapidly attained F–– equilibrium at the dissolving surface.read more
Citations
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Some physico-chemical aspects of hydroxylapatite
T. S. B. Narasaraju,D. E. Phebe +1 more
TL;DR: A review of hydroxylapatite, a biological material of extensive contemporary inter-disciplinary research, can be found in this article, where the authors provide information on preparation techniques, characterization, isomorphous substitutions and solubility equilibria.
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Crystal defects and dissolution
Helen M. Burt,A.G. Mitchell +1 more
TL;DR: In this article, perchlorate crystals were grown in silica gel by reaction between perchloric acid in the gel and potassium chloride diffusing into the gel from a layer of solution on the gel surface.
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Short-Time Antibacterial Effects of Dimethylaminododecyl Methacrylate on Oral Multispecies Biofilm In Vitro.
Yujie Zhou,Suping Wang,Xuedong Zhou,Yiran Zou,Mingyun Li,Xian Peng,Biao Ren,Hockin H.K. Xu,Michael D. Weir,Lei Cheng,Yu Chen,Qi Han +11 more
TL;DR: A novel DMADDM-containing solution was developed, achieving effective short-time antibacterial effects and regulation ability of biofilm formation, and showed that there existed a certain concentration application range for DMAD DM, CHX, and NaF.
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The bio-medical and related roles of ion-selective membrane electrodes.
G.J. Moody,J.D.R. Thomas +1 more
TL;DR: Ion-selective electrodes may be classified according to membrane material into glass, homogeneous and heterogeneous solid-state, liquid ion-exchanger, carrier complex, semi-conducting organic charge-transfer complex and ionradical salt, PVC matrix membrane with liquid ion, or other sensor, and electroactive hydrophobised graphite.
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Effect of fluoride in phosphate buffer solution on bonding to artificially carious enamel.
TL;DR: The bond strengths of both adhesive systems to artificially carious enamel significantly increased after immersion in fluoride-phosphate buffer solution, and it is proposed not to remove the white enamel lesions for bonding in the clinic.
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