Compositions: coating or plastic – Coating or plastic compositions – Dental
Patent
1995-06-07
1997-10-14
Bonner, Melissa
Compositions: coating or plastic
Coating or plastic compositions
Dental
501 1, 501 32, 501127, 501 80, 501153, 501154, 501103, 501134, 424422, 424423, 4332221, 4332011, 4332121, 4283062, 4283073, 4273762, 427245, 427 226, 427 227, 427 229, C09K 300
Patent
active
056767455
ABSTRACT:
Composites in the form of a three-dimensional framework or skeleton of ceic particles are formed by a low cost, low temperature sintering process which decomposes a pre-ceramic inorganic or organic precursor. Upon heating, preferably in air, the precursor decomposes to form a ceramic phase in the form of necks between the individual ceramic particles. The properties of the resulting porous ceramic bodies can be modified, such as toughened by impregnation with monomers, oligomers or polymers which are polymerized or cured in situ. Such composites find use as cosmetic products or protheses for humans and animals, such as dental restoratives and bone implants. Methods of fabrication are disclosed which include the use of a pre-ceramic polymer as a binder for the ceramic particles which forms the necks of material between the individual ceramic particles upon firing.
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Antonucci Joseph M.
Kelly John Robert
Bonner Melissa
The United States of America as represented by the Secretary of
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