Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1995-03-23
1996-08-20
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523212, 523220, 524450, 524493, 524561, 433229, A61C 13087, C08K 336, C08K 906, C08L 3310
Patent
active
055480004
ABSTRACT:
An artificial tooth of polymethacrylate, barium aluminum silicate glass and microfine silicon dioxide is described that imitates the natural tooth in its essential properties, namely mechanical strength and abrasion performance as well as transparency and depth of color. The tooth contains 15 to 35 weight % polymethacrylate, 35 to 75 weight % barium aluminum silicate glass with a mean particle size of from 0.1 to 5 micrometers, and 5 to 25 weight % silicon dioxide with a mean particle size of from 0.01 to 0.2 micrometers. In addition pigments necessary to match cosmetic requirements, are normally added as necessary.
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Erdrich Albert
Nagel Joachim
Heraeus Kulzer GmbH
Merriam Andrew E. C.
Michl Paul R.
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