Endosseous implants
AssigneesSumitomo Chemical Company, Limited, Matsumoto Dental College
InventorsKazuo Suzuki, Hideki Yoshizawa, Michio Ito
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Abstract
An improved implant comprising a metallic base material and a coating layer of a ceramics which is formed by thermally sprayed firstly a bonding agent and secondly ceramic powders (optionally containing a porcelain) around the outersurface of the metallic base material. The implant has a sufficient mechanical strength (e.g. impact strength) and hence an excellent break-resistance and further a good affinity to tissues of living bodies and is useful for implantation in various bones including tooth roots and joints in living bodies.
Claims4
A prosthetic article comprising a ceramic coating layer bonded to a metal base by a plasma sprayed layer of a bonding agent applied to the metal base, said ceramic coating layer being formed onto the metal base by plasma spraying method with an uneven surface, said ceramic coating layer containing a plurality of pores therein and being a member selected from the group consisting of aluminum oxide, zirconium oxide, titanium oxide, and a mixture thereof, and the metal base is made of a material selected from the group consisting of cobalt-chromium-nickel alloy, cobalt-chromium-molybdenum alloy, stainless steel 18-8, stainless steel 316L, titanium and tantalum, and said bonding agent being selected from the group consisting of molybdenum powder, tantalum powder, niobium powder, nickel-chromium-aluminum powdery mixture and nickel-aluminum powdery mixture.
Dependencies are inferred from the claim text.