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Dent Mater J. 2020 Feb 7. doi: 10.4012/dmj.2019-337. [Epub ahead of print]

Molecular precursor method for thin carbonate-containing apatite coating on dental implants.

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Department of Dental Engineering, Tsurumi University School of Dental Medicine.
Department of Applied Physics, School of Advanced Engineering, Kogakuin University.


The molecular precursor method is an easy and simple method for coating thin carbonate-containing apatite (CA) films onto titanium surfaces. A molecular precursor solution containing ethanol, calcium-EDTA complex, and phosphate salt was dropped onto a titanium surface and then heated at 600°C for 2 h. An adherent thin CA coating was achieved. Animal implantation experiments showed that CA-coated implants had significantly higher bone-to-implant values than non-coated implants (p<0.05). The molecular precursor method was also used to coat three-dimensional titanium webs (TWs). Thin CA films could be coated inside the center area, as well as the surface of the TW, with excellent bone formation inside the CA-coated TW. Furthermore, the molecular precursor method was used to coat partially stabilized zirconia with CA. Better bone response was observed for CA-coated zirconia. From this, it is concluded that the molecular precursor method is useful for producing thin CA coatings on implant materials.


Dental implant; Molecular precursor method; Thin apatite coating; Titanium; Titanium web

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