Dental prosthesis blank
AssigneeHint-Elc CmbH
InventorJosef Hintersehr
Life of this patent
Estimating the term…
Abstract
A dental prosthesis blank and a combined dental prosthesis blank and blank holder. The dental prosthesis blank provides for forming a dental prosthesis therefrom and the blank holder holds the blank during the forming of the prosthesis. The blank comprises a first free end for forming the dental prosthesis therefrom and a positioning end for positioning the blank in the blank holder. The positioning end includes a cylindrical cone, i.e. extension, having a pair of reference surfaces defined by a slot extending along the axis of the cylindrical extension. The blank holder includes a reference element such as a bar that fits within the space between the reference surfaces.
Claims16
A dental prosthesis blank comprising a first free end machinable to form a dental prosthesis and a positioning end for positioning the blank in a blank holder having a reference element therein, said positioning end of said blank comprising a substantially cylindrically shaped cone having a second free end which includes at least one pair of parallel reference surfaces spaced in opposing relationship, said reference surfaces defining a space therebetween and extending symmetrically and transversely to a rotational axis of said cone, each of said reference surfaces extending entirely across said cone and wherein said space is defined to receive the reference element of the blank holder with the reference surfaces engageable with the reference element of the blank holder to enable repeatable and precise positioning of said blank within the blank holder.
A dental prosthesis blank for forming a dental prosthesis therefrom and a blank holder means for holding the blank during the forming, said blank comprising;
- a first free end for forming a dental prosthesis therefrom and a positioning end for positioning the blank in said blank holder means, said positioning end having a substantially cylindrical extension having a second free end which includes at least one pair of reference surfaces defined by a slot extending from said second free end along the axis of said cylindrical extension, said reference surfaces defining a space therebetween and extending symmetrically and transversely to said axis and extending entirely across the cylindrical extension for cooperation with a reference element of said blank holder means when clamping the blank to the blank holder means;
- said blank holder means for holding said blank during the forming comprising;
- a reference element having a thickness substantially equal to said space between said reference surfaces wherein said reference element fits into said space and engages said reference surfaces.
Dependencies are inferred from the claim text.