Dental composition containing X-ray opaque material
AssigneeKulzer GmbH
InventorRoland Schaefer
Life of this patent
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Abstract
An improved dental composition which is opaque to X-rays comprising a polymerizable matrix and inorganic filler. The inorganic filler are formed of particles of zeolitic alumino-silicate of at least one metal selected from the group consisting of calcium, strontium, barium, lanthanum, rare earth metal having an atomic number of 58-71, tantalum and hafnium. The invention also provides dental prosthetic appliances found from said dental compositions.
Claims15
A dental composition which when polymerized is (i) opaque to X-ray radiation and which (ii) can be polished to a high gloss comprising a polymerizable binder which polymerizes to form a polymerized dental composition and contains fine particles of an inorganic filler which imparts X-ray opacity to said composition, said inorganic filler comprising a zeolitic alumino silicate of at least one metal selected from the group consisting of calcium, strontium, barium, lanthanum, rare earth metals having atomic numbers from 58-71, tantalum, and hafnium, said polymerizable binder is at least one binder selected from the group consisting of the esters of acrylic acid with mono- and polyhydric alcohols, urethane-acrylates, urethane-methacrylates and the reaction product of glycidyl-methacrylate and bisphenol A.
Dependencies are inferred from the claim text.