High strength calcium phosphate glass-ceramic materials
Abstract
Abstract Calcium phosphate glass-ceramics of high strength and toughness is disclosed. These materials are excellent for artificial dental or bone materials. The strength and toughness of these materials are improved substantially in comparison with conventionally used calcium phosphate glass-ceramics by adding rare earth oxide in them. For dental materials, good aesthetic appearance to natural teeth is also obtained by adding one type, or two or more types of compounds selected from oxides of iron, manganese, cerium, titanium, nickel, zinc, cobalt, tungsten, chromium, and vanadium as color component. Also, if necessary, Al 2 O 3 and/or SiO 2 is contained as coloring assistant agent in that composite. Moreover it is possible to adjust the color tone of each individual's teeth. The rare earth oxide, coloring component, and coloring assistant agent added are incorporated in crystals of calcium phosphate. Consequently, they cause no elution during use.
Inventors
- 👤 Akira Watanabe
- 👤 Yoshimitsu Takeuchi
- 👤 Seiji Kihara
- 👤 Makoto Mitsudoh
- 👤 Yoh'ichi Wakabayashi
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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