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US 5,470,231 AGranted
Method of forming porcelain tooth restorations
OwnerAlvin L. Sterninventor
Life of this patent
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Abstract
A method of forming a porcelain tooth restoration from a positive replication of the tooth structure on which the tooth restoration is to be placed. Areas of the replication are coated with a liquid preparation which substantially inhibits moisture absorption by the replication. A slurry of powdered porcelain is applied over the coated area of the replication to form at least a portion of the tooth restoration which is cured and eventually separated from the tooth replication for bonding to the tooth structure.
Claims12
A method of forming an all porcelain tooth restoration comprising the steps of:
- preparing a negative impression of the tooth structure on which a tooth restoration is to be placed;
- forming from said negative impression a positive replication of said tooth structure of a porcelain compatible refractory investment material;
- coating the areas of said replication which are to receive restoration materials with a liquid preparation which substantially inhibits moisture absorption by said replication;
- applying a slurry of powdered porcelain over said coated areas of said replication to form at least a portion of a tooth restoration;
- curing said at least a portion of a tooth restoration by firing thereof;
- and
- removing said tooth structure replication to leave said at least a portion of a tooth restoration for bonding to said tooth structure.
4 more elements
Dependencies are inferred from the claim text.