Antibacterial calcium phosphate ceramic
AssigneeKabushiki Kaisha Sangi
InventorsKiminori Atsumi, Tomoki Saito, Masaaki Komori
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Abstract
A calcium phosphate ceramic such as hydroxyapatite or calcium tertiary phosphate or calcium carbonate is used as a carrier, and the carrier is caused to carry silicon in addition to silver, or silicon and zinc in addition to silver. The result is an antibacterial ceramic exhibiting an ultra high degree of whiteness and suppressed discoloration. This ceramic material may be heat-fired at a temperature above 960.degree. C. to obtain a further improvement.
Claims9
An antibacterial ceramic material comprising a calcium phosphate ceramic containing an amount of silver from 0.0001 to 10% by weight with respect to the calcium phosphate ceramic, and at least 5% by weight of silicon with respect to the amount of silver.
An antibacterial ceramic material comprising calcium carbonate containing an amount of silver from 0.0001 to 10% by weight with respect to the calcium carbonate, and at least about 5% by weight of silicon with respect to the amount of silver.
An antibacterial ceramic material comprising a calcium phosphate ceramic containing an amount of silver from 0.001 to 10% by weight with respect to the calcium phosphate ceramic, at least 5% by weight of silicon with respect to the amount of silver, and at least 5% by weight of zinc with respect to the amount of silver.
An antibacterial ceramic material comprising calcium carbonate containing an amount of silver from 0.001 to 10% by weight with respect to the calcium carbonate, at least 5% by weight of silicon with respect to the amount of silver, and at least 5% by weight of zinc with respect to the amount of silver.
Dependencies are inferred from the claim text.