Pasty dental veneer making composition
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United States of America Patent
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Feb 2, 1993
Grant Date -
N/A
app pub date -
Apr 5, 1989
filing date -
Apr 5, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heat cured pasty composition adapted to form a dental veneer which is resistant or immune to interdental cracks while in use on crowns and bridges. The composition includes polymerizable urethane-acrylic monomer, inorganic fillers, pyrogenic silica, heat activated polymerization initiators, and fractured organic filler particles. Heat polymerization of the composition above about 100.degree. C. forms a polymer which has a microhardness of at least HV 0.1/10 18.0 Kp/mm.sup.2, and an impact strength of at least 2.0 KJ/m.sup.2.
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