Dental abutment blank, method of manufacturing a dental abutment blank and method of manufacturing a dental prosthesis from such a blank
The present invention relates to a dental abutment blank comprising a body having a first end and a second end, a connection section at the first end that is configured to be connected to a dental implant, a channel having a longitudinal axis and defining an opening at the first end and a closed end at a distance from the second end of the body; to methods for manufacturing a dental prosthesis having an angulated screw channel from said blank as well as to a dental prosthesis having an angulated screw channel manufactured from said blank.
1. A dental abutment blank comprising:
a body having a first end and a second end;
a connection section at the first end that is configured to be connected to a dental implant; and
a channel having a longitudinal axis and defining an opening at the first end,
wherein the channel extends through the connection section into the body and has a closed end at a distance from the second end of the body,
wherein the channel comprises an end section at or near the closed end having a width and an intermediate section between the end section and the first end of the body having a width greater than the width of the end section, and
wherein the body comprises a milling section that is substantially cylindrical and wherein the connection section has a smaller outer diameter than the milling section and protrudes from the milling section.
2. A dental abutment blank comprising:
a body having a first end and a second end;
a connection section at the first end that is configured to be connected to a dental implant; and
a channel having a longitudinal axis and defining an opening at the first end,
wherein the channel extends through the connection section into the body and has a closed end at a distance from the second end of the body,
wherein the channel comprises an end section at or near the closed end having a width and an intermediate section between the end section and the first end of the body having a width greater than the width of the end section, and
wherein the end section is a third section and the intermediate section is a second section and wherein the channel comprises a first section between the second section and the first end of the body having a first width smaller than the second width, and wherein the third width is substantially the same as the first width.
3. The dental abutment blank of claim 2 , wherein the connection section has a length and wherein a length of the first section is greater than or equal to the length of the connection section.
4. The dental abutment blank of claim 2 , wherein the first and/or the second, and/or the third section are cylindrical bores having a first, a second and a third diameter, respectively.
5. A dental abutment blank comprising:
a body having a first end and a second end;
a connection section at the first end that is configured to be connected to a dental implant; and
a channel having a longitudinal axis and defining an opening at the first end,
wherein the channel extends through the connection section into the body and has a closed end at a distance from the second end of the body,
wherein the channel comprises an end section at or near the closed end having a width and an intermediate section between the end section and the first end of the body having a width greater than the width of the end section, and
wherein the closed end of the channel is formed as a conical bore section.
6. The dental abutment blank of claim 2 , wherein between the first section and the second section a transition section is formed that forms a screw seat and that is tapered or perpendicular to a central axis of the channel.
7. The dental abutment blank of claim 1 , wherein the longitudinal axis of the channel is coaxial to a central axis of the connection section.
8. The dental abutment blank of claim 1 , wherein the connection section comprises a structure that is configured to be engaged in a form fit manner by a connection section at the dental implant.
9. The dental abutment blank of claim 1 , wherein the connection section comprises a portion having a non-rotational feature.
10. The dental abutment blank according to claim 1 , wherein the blank is made from a material, which is suitable for a dental prosthesis, and selected from a group consisting of titanium, cobalt, chrome, their alloys and ceramics.
11. A dental prosthesis formed from a blank according to claim 1 .
12. An arrangement comprising a blank or prosthesis as defined in claim 1 , a screw, an implant, and optionally a crown.
13. A method of manufacturing a dental prosthesis from a dental abutment blank, the blank being defined as in claim 1 , comprising the steps of:
holding the blank at the connection section, and milling the blank.