Dentistry – Method or material for testing – treating – restoring – or... – Crown
Patent
1998-02-27
1999-03-02
Lucchesi, Nicholas D.
Dentistry
Method or material for testing, treating, restoring, or...
Crown
433218, A61C 510
Patent
active
058762094
ABSTRACT:
The method of manufacturing a dental crown includes the steps of making an impression of the patient's teeth including the tooth to be crowned and then making a first model from the impression. The tooth to be crowned is then treated by removing surface portions to provide a prepared tooth. An impression is made of the patient's teeth with the prepared tooth and from this impression a second model is made. By use of heat and pressure a thin acrylic releasing plastic foil is applied over the second model. By use of heat and pressure a thicker plastic foil form is made from the first model. Moldable crown formed material is then placed on the plastic foil encapsulated prepared tooth on the second model. The plastic foil form is then placed over the foil covered second mold to shape the moldable crown forming material. The crown forming material is then hardened to create a crown that is removed from off of the foil covered second model and out of the plastic foil form. The created crown is then further hardened and polished as necessary and cemented onto the patient's prepared tooth.
REFERENCES:
patent: 5475912 (1995-12-01), Sundstrom
patent: 5490810 (1996-02-01), Hahn et al.
patent: 5593305 (1997-01-01), Shoher et al.
patent: 5624263 (1997-04-01), Babian
patent: 5735692 (1998-04-01), Berger
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