Method of making a dental product
AssigneeDentsply Research & Development Corp.
InventorsBenjamin J. Sun, Andrew M. Lichkus
Life of this patent
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Abstract
The invention provides high strength dental polymeric dental products made from wax-like polymerizable dental material. These dental products have superior strength compared to products formed from prior wax-like polymerizable materials. Prior wax-like polymerizable materials do not form strong enough polymeric material for making dentures. High strength dentures are made by positioning artificial teeth in wax-like polymerizable dental material of the invention. This material is then shaped and polymerized to the form a denture base of high strength dental polymeric material. These dentures are completed without forming wax and without applying inorganic plaster to the artificial teeth.
Claims16
A method of making a dental product, comprising:
- providing a light curable material comprising a polymerizable urethane compound formed by a process comprising reacting a diol compound with a diisocyanate compound,
- forming said light curable material, and
- polymerizing said light curable material to form a dental product comprising high strength dental polymeric material having an un-notched impact strength of at least 4 foot-pound/inch2, a flexural modulus of at least 350,000 psi and a flexural strength of at least 7,000 psi.
Dependencies are inferred from the claim text.