Title:
SYSTEM FOR FABRICATION OF INDIRECT DENTAL RESTORATIVES
Document Type and Number:
WIPO Patent Application WO2001010335
Kind Code:
B1
Abstract:
A process for the fabrication of indirect dental restoratives includes the making of a first, pre-operative impression of a tooth to be restored using a first polyvinyl silicone (PVS) material disposed in a clear tray, followed by the preparation of the tooth. A second, final post-operative impression of the tooth is taken utilizing a second PVS material. A tooth model is then made by pouring a low viscosity and suitably rigid, third PVS material into the final impression. Prior to the complete setting of the low viscosity PVS material, a higher viscosity, fourth PVS material is applied onto the model PVS material to form a completed model with base. The model is then fitted into the pre-operative impression matrix made from the first PVS material. Layers of composite are packed onto the impression in the clear matrix. The model (with attached base) is then inserted into the composite disposed in the first PVS material and the resulting matrix is placed in a single apparatus for conducting both light and heat cure of the dental composite. The apparatus can utilize a thermister disposed in a composite material, the thermister/composite assembly being disposed in a curing chamber of the apparatus and connected to a control device which controls a heat lamp also disposed in the apparatus. Curing of the dental composite is performed by heating until, for example, the thermister reaches a selected temperature.
Inventors:
SUH BYOUNG I (US)
NAGEL RICH (US)
NAGEL RICH (US)
Application Number:
PCT/US2000/021890
Publication Date:
August 16, 2001
Filing Date:
August 10, 2000
Export Citation:
Assignee:
BISCO INC (US)
SUH BYOUNG I (US)
NAGEL RICH (US)
SUH BYOUNG I (US)
NAGEL RICH (US)
International Classes:
A61C5/77; A61C13/00; A61C13/15; (IPC1-7): A61C13/00; A61C5/10
Download PDF: