Other

Pentax Corporation

Panasonic Electric Works Co., Ltd.

Panasonic Corporation Works, Ltd.

Tadashi Kokubo

Masahiro Nawa

Masaki Uchida

Tetsuro Ogawa

Yukiko Gonda

A hard tissue repairing material includes zirconia as a base material. A surface of the base material has a hydrophilic group. The hydrophilic group is bonded to zirconium atom in the base material. The base material may contain at least an ionic component that is selected from a group consisting of calcium ion, sodium ion, potassium ion, and phosphate ions within the surface. A hard tissue repairing material may include zirconia as a base material and a layer of a main component of an apatite. The layer of the apatite may be formed on a hydrophilic group bonded to zirconium atom in the base material.

Hard tissue repairing material

A bioactive glass having a composition substantially comprising 30 to 60 mol % of CaO, 40 to 70 mol % of SiOand 20 mol % or less of NaO has low glass transition temperature and/or crystallization temperature, and a sintered calcium phosphate obtained by using the bioactive glass as a sintering aid has excellent biocompatibility, mechanical strength and sinterability.

[object Object]

A bioactive glass having a composition substantially comprising 20 to 40 mol % of CaO, 40 to 60 mol % of SiO, and 10 to 20 mol % of MgO is high in bioactivity and mechanical strength, and a sintered calcium phosphate glass using the bioactive glass as a sintering aid is excellent in biocompatibility and mechanical strength.

A hard tissue repairing material including a base material and a surface layer having a crystalline zirconia covering the base material, being characterized in that the film includes a Zr&mdash;OH group. A middle layer may be formed between the base material and the surface layer and, in such case, includes at least one element of the base material and at least one element of the surface layer having a crystalline zirconia.

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Kyoto, Japan

Tadashi Kokubo