Method of making a dental crown for a dental preparation by means of a CAD-CAM system
AssigneeElephant Edelmetaal B.V.
InventorJoseph M. van der Zel
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Abstract
A method of making a dental crown for a dental preparation by means of a CAD-CAM system. In the method, first a model of the dental preparation is made from a refractory material under the control of the CAD-CAM system. Subsequently, at least one layer of a material suitable for dental crowns is applied to the model. The layer is sintered during or after its application, and is then ground under the control of the CAD-CAM system until a predetermined shape is obtained. Finally the refractory material is removed.
Claims11
A method of making a dental crown for a dental preparation by means of a CAD-CAM system wherein under the control of the CAD-CAM system a model of the dental preparation is made from a refractory material, to which model successively two or more layers of a material suitable for dental crowns are applied, each layer being sintered during or after its application and being ground after the sintering treatment and before the next layer is applied, which grinding treatments are effected under the control of said CAD-CAM system until a shape determined by said system is obtained, after which the refractory material is removed.
Dependencies are inferred from the claim text.