Dental component, a dental fixture and a dental implant

Abstract

The invention relates to a dental component, such as an abutment, an abutment replica, an abutment blank, a customized abutment, a scan abutment, a digital transfer coping, an impression pick-up element, a healing cap or a driver, comprises at least one first indexing element and at least one second indexing element having an apical end located apically of the apical end of said first indexing element, wherein the second indexing element is designed to present a play with mating features of a dental fixture. The invention also relates to a dental implant which comprises a dental component having first and second indexing elements and a dental fixture having third and fourth indexing elements, wherein any play between the first and third indexing elements is smaller than a play between the second and fourth indexing elements. The invention also relates to a dental fixture.

1 . A dental component, comprising a fixture engagement portion for engaging the dental component with a dental fixture adapted to be inserted into a jawbone or for engaging the dental component with a fixture replica, the fixture engagement portion having a geometrical central axis and being provided with
 at least one radially projecting first indexing element having an apical end, and   at least three radially projecting second indexing elements having an apical end located apically of the apical end of said first indexing element,   wherein the radially most distant area of the apical end of the second indexing element is located at a shorter radial distance from said central axis than the radially most distant area of the apical end of the first indexing element, and/or wherein the apical end of the second indexing element has, compared to the apical end of the first indexing element, a smaller dimension in the circumferential direction of the fixture engagement portion.   
     
     
         2 . The dental component as claimed in  claim 1 , wherein said at least one first indexing element is circumferentially separated from any one of said at least three second indexing elements. 
     
     
         3 . The dental component as claimed in  claim 1 , wherein at least one of said at least three second indexing elements is asymmetrically distributed along the circumference of the fixture engagement portion. 
     
     
         4 . The dental component as claimed in  claim 1 , wherein at least one of said at least three radially projecting second indexing elements has an apical end of smaller dimension in the circumferential direction compared to the apical end of the first indexing element, and/or the radially most distant area of the apical end of at least one of the at least three second indexing elements being located at a shorter radial distance from said central axis than the radially most distant area of the apical end of the first indexing element. 
     
     
         5 . The dental component as claimed in  claim 4 , wherein a radius from said central axis to the centre of at least one of said at least three second indexing elements and a radius from said central axis to the centre of said first indexing element form a first angle θ,
 wherein a radius from said central axis to another one of said at least three second indexing elements and said radius from said central axis to the centre of said first indexing element form a second angle φ, 
 wherein said second angle φ is different from said first angle θ and from any angle being a multiple of said first angle θ, so that φ≠nθ, where n is a positive integer. 
 
     
     
         6 . The dental component as claimed in  claim 1 , wherein the axial extension of the indexing elements is such that the first and second indexing elements are intersected by a common geometrical plane which is perpendicular to the central axis of the fixture engagement portion. 
     
     
         7 . The dental component as claimed in  claim 1 , wherein said at least one radially projecting first indexing element comprises at least two radially projecting first indexing elements, wherein in the circumferential direction of the fixture engagement portion, at least two of said at least three second indexing elements are interposed between two of said first indexing elements. 
     
     
         8 . The dental component as claimed in  claim 7 , wherein said at least three radially projecting second indexing elements are interposed between two of said first indexing elements, wherein each one of said at least three second indexing elements has an apical end which is located apically of the apical ends of said first indexing elements. 
     
     
         9 . The dental component as claimed in  claim 1 , wherein the number of first indexing elements is greater than the number of second indexing elements. 
     
     
         10 . The dental component as claimed in  claim 1 , wherein said at least one first indexing element and said at least three second indexing elements have an elongate extension in the coronal-apical direction. 
     
     
         11 . The dental component as claimed in  claim 1 , wherein the fixture engagement portion comprises a cylindrical surface from which said at least one first indexing element and said at least three second indexing elements project radially. 
     
     
         12 . The dental component as claimed in  claim 1 , wherein the apical end of at least one of said at least three second indexing elements is provided with a chamfer. 
     
     
         13 . The dental component as claimed in  claim 1 , being a component selected from the group consisting of an abutment, an abutment replica, an abutment blank, a customized abutment, a scan abutment, a digital transfer coping, an impression pick-up element, a healing cap and a driver. 
     
     
         14 . A dental implant, comprising
 a dental component comprising a fixture engagement portion provided with   at least one first indexing element having an apical end, and   a plurality of neighboring second indexing elements having an apical end,   a dental fixture adapted to be inserted into a jawbone and comprising   a component engagement portion adapted to mate with said fixture engagement portion, the component engagement portion being provided with   at least one third indexing element having a coronal end, and   a plurality of neighboring fourth indexing elements having a coronal end,   wherein the apical ends of the second indexing elements are located apically of the apical end of the first indexing element,   wherein the first indexing element is only enabled to mate with the third indexing element after the second indexing elements has mated with the fourth indexing elements,   wherein any play between the first indexing element and the mating third indexing element is smaller than a play between the second indexing elements and the fourth indexing elements, whereby a tighter fit is provided between the first and third indexing elements compared to the fit between the second and fourth indexing elements.   
     
     
         15 . The dental implant as claimed in  claim 14 , wherein said plurality of neighboring second indexing element are asymmetrically distributed along the circumference of the fixture engagement portion. 
     
     
         16 . The dental implant as claimed in  claim 14 , wherein said first and second indexing elements are provided as radial projections which project from a surface of the fixture engagement portion of the dental component, and wherein said third and fourth indexing elements are provided as radial depressions in a surface of the component engagement portion of the dental fixture. 
     
     
         17 . The dental implant as claimed in  claim 14 , wherein the first, second, third and fourth indexing elements are distributed along the circumference of the fixture engagement portion and the component engagement portion, respectively, in such way that the dental component can only mate in one rotational orientation with respect to the dental fixture. 
     
     
         18 . The dental implant as claimed in  claim 14 , wherein said at least one first indexing element is circumferentially separated from any one of said plurality of neighboring second indexing elements, and wherein said at least one third indexing element is circumferentially separated from any one of said one or more fourth indexing elements. 
     
     
         19 . A dental implant comprising:
 a dental component including
 a fixture engagement portion for engaging the dental component with a dental fixture adapted to be inserted into a jawbone or for engaging the dental component with a fixture replica, the fixture engagement portion having a geometrical central axis and being provided with 
   at least one radially projecting first indexing element having an apical end, and
 at least two neighboring radially projecting second indexing elements having an apical end located apically of the apical end of said first indexing element, 
 wherein the radially most distant area of the apical end of the second indexing elements is located at a shorter radial distance from said central axis than the radially most distant area of the apical end of the first indexing element, or wherein the apical end of the second indexing element has, compared to the apical end of the first indexing element, a smaller dimension in the circumferential direction of the fixture engagement portion, and 
   a dental fixture adapted to be inserted into a jawbone and comprising a component engagement portion adapted to mate with said fixture engagement portion, the component engagement portion being provided with   at least one third indexing element having a coronal end, and   at least two neighboring fourth indexing element having a coronal end,   wherein the apical end of the second indexing elements is located apically of the apical end of the first indexing element and/or wherein the coronal end of the fourth indexing elements is located coronally of the coronal end of the third indexing element,   wherein the first indexing element is only enabled to mate with the third indexing element after the second indexing elements has mated with the fourth indexing elements,   wherein any play between the first indexing element and the mating third indexing element is smaller than a play between the second indexing elements and the fourth indexing elements, whereby a tighter fit is provided between the first and third indexing elements compared to the fit between the second and fourth indexing elements.   
     
     
         20 . A dental fixture adapted to be inserted into a jawbone and comprising a component engagement portion adapted to mate with a fixture engagement portion of a dental component, the component engagement portion having a geometrical central axis and being provided with
 at least one radially indenting apical indexing element having a coronal end,   at least three neighboring radially indenting coronal indexing element having a coronal end located coronally of the coronal end of the apical indexing element,   wherein the radially most distant area of the coronal end of the coronal indexing elements are located at a larger distance from said central axis than the radially most distant area of the coronal end of the apical indexing element, and/or wherein the coronal end of the coronal indexing elements have, compared to the coronal end of the apical indexing element, a larger dimension in the circumferential direction of the component engagement portion.   
     
     
         21 . The dental fixture as claimed in  claim 20 , wherein said at least one apical indexing element is circumferentially separated from any one of said one or more coronal indexing elements. 
     
     
         22 . The dental fixture as claimed in  claim 20 , wherein said at least two neighboring coronal indexing element are asymmetrically distributed along the circumference of the component engagement portion.