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Dent Mater J. 2019 Jul 31;38(4):663-670. doi: 10.4012/dmj.2018-222. Epub 2019 Jun 13.

Bioactive glass coating on zirconia by vacuum sol-dipping method.

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Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Nagasaki University.
Department of Dental and Biomedical Materials Science, Graduate School of Biomedical Sciences, Nagasaki University.


In order to the preparation of biodegradable, bioactive and strongly adhered coating layer to the bioinert zirconia substrate, a bioactive glass (BG) was successfully coated on the zirconia plates. To achieve this goal, the zirconia plates dipped into the 45S5 BG sol in the vacuum chamber (vacuum sol-dipping method) followed by sintering to fabricate a strongly adhered BG coating on the zirconia plates. The parameters such as surface morphology and BG coating coverage ability on the zirconia plates have been assessed before and after coating with 45S5 BG. Phase structure of the BG coating based on the X-ray diffraction (XRD) result could be indexed as Na4Ca4(Si6O18). The interfacial adhesive strength between the zirconia substrate and BG coating layer was higher than the measured adhesive strength (55±7 MPa). The viability results approved the satisfying conclusion for the offered coating method on the zirconia substrates.


Bioactive glass; Coating; Sol; Zirconia

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