The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2013
Filed:
May. 08, 2007
Ulrich Orth, Heppenheim, DE;
Ulrich Orth, Heppenheim, DE;
Sirona Dental Systems GmbH, Bensheim, DE;
Abstract
A method for producing a dental prosthetic item, including providing a 3D model of the item. The providing includes determining an esthetically relevant designed subregion of a 3D model of the item as part of an exterior surface of the item. The subregion corresponds to a labial surface and/or incisor edge, or to a buccal and/or occlusal surface. Further steps include selecting a suitable blank, specifying a blank having a prefabricated esthetically relevant terminal subsurface of a surface of a tooth, a terminal subsurface of the blank being such as at least approximates the subregion. A further step includes forming the item from the selected blank such that a prefabricated terminal subsurface of the blank remains unmachined in at least a central region thereof. The forming includes machining the blank only in a marginal area of the terminal subsurface and on at least some surfaces outside of the terminal subsurface.