Metallic dental prostheses and objects made of bulk-solidifying amorphhous alloys and method of making such articles
View Patent ↗Metallic dental prostheses made of bulk-solidifying amorphous alloys wherein the dental prosthesis has an elastic strain limit of around 1.2% or more and methods of making such metallic dental prostheses are provided.
1. A dental prosthesis comprising a replication of at least one surface feature of at least one tooth having at least one portion formed of a bulk-solidifying amorphous alloy that is free from Ni or Al, said bulk-solidifying amorphous alloy having an elastic strain limit of about 1.2% or more, a high hardness value of at least about 4 GPa, a glass transition temperature lower than 400° C., and a coefficient of thermal expansion of about 10 −5 (m/m ° C.) or less, wherein the bulk-solidifying amorphous alloy is based on ferrous metals.
2. The dental prosthesis as described in claim 1 , wherein the bulk-solidifying amorphous alloy further comprises Zr, Cu and B.
3. A dental prosthesis as described in claim 1 , wherein the bulk-solidifying amorphous alloy has an elastic strain limit of about 1.8% or more.
4. The dental prosthesis as described in claim 1 , wherein the bulk-solidifying amorphous alloy has a high fracture toughness of at least about 10 ksi√in.
5. The dental prosthesis as described in claim 1 , wherein the bulk-solidifying amorphous alloy has a high hardness value of at least 5.0 GPa.
6. The dental prosthesis 1 as claimed in claim 1 , wherein the bulk-solidifying amorphous alloy further comprises a ductile metallic crystalline phase precipitate.
7. The dental prosthesis as described in claim 1 , wherein the dental prosthesis is coated with a biocompatible resin cement.
8. The dental prosthesis as described in claim 7 , wherein the cement is reinforced with a metal primer agent and an oxide selected from the group consisting of alumina, magnesia, zirconia, and a combination of these oxides.
9. The dental prosthesis as described in claim 1 , wherein the at least one portion formed from the bulk-solidifying amorphous alloy has a section thickness of at least 0.5 mm.
10. The dental prosthesis as described in claim 1 , wherein the dental prosthesis is in the form of a dental device selected from the group consisting of a crown, a bridge or a cap.
11. The dental prosthesis of claim 1 , wherein the bulk-solidifying amorphous alloy comprises Be.
12. A dental prosthesis comprising a replication of at least one surface feature of at least one tooth having at least one portion formed of a bulk-solidifying amorphous alloy that is free from Ni or Al, said bulk-solidifying amorphous alloy having an elastic strain limit of about 1.2% or more, a glass transition temperature lower than 400° C., and a coefficient of thermal expansion of about 10 −5 (m/m ° C.) or less, wherein the bulk-solidifying amorphous alloy has a hardness of about 7.5 GPa and higher.
13. The dental prosthesis as described in claim 12 , wherein the bulk-solidifying amorphous alloy is based on ferrous metals.
14. An object comprising a replication of at least one surface feature of a near-to-net shape object on at least one portion formed of a bulk-solidifying amorphous alloy having an elastic strain limit of about 1.2% or more, a high hardness value of at least about 4 GPa, a glass transition temperature up to 450° C., and a coefficient of thermal expansion of about 10 −5 (m/m ° C.) or less, wherein the bulk-solidifying amorphous alloy is based on ferrous metals.
15. The object of claim 14 , wherein the bulk-solidifying amorphous alloy further comprises Zr, Ni and Cu, and optionally further comprises one or more of Be, Al, and B.
16. A object of claim 14 , wherein the bulk-solidifying amorphous alloy has an elastic strain limit of about 1.8% or more.
17. The object of claim 14 , wherein the bulk-solidifying amorphous alloy has a high fracture toughness of at least about 10 ksi√in.
18. The object of claim 14 , wherein the bulk-solidifying amorphous alloy has a high hardness value of at least about 5.0 GPa.
19. The object of claim 14 , wherein the bulk-solidifying amorphous alloy further comprises a ductile metallic crystalline phase precipitate.
20. The object of claim 14 , wherein the bulk-solidifying amorphous alloy is Al, Ni or Be free.
21. The object of claim 14 , wherein the bulk-solidifying amorphous alloy is Ni or Al free.
22. The object of claim 14 , wherein the bulk-solidifying amorphous alloy comprises Be.
23. The object of claim 14 , wherein the at least one portion formed from the bulk-solidifying amorphous alloy has a section thickness of at least 0.5 mm.
24. The object of claim 14 , wherein the bulk-solidifying amorphous alloy lacks any crystal structure and the bulk-solidifying amorphous alloy is configured to replicate intricacies of an impression.
25. An object comprising a replication of at least one surface feature of a near-to-net shape object on at least one portion formed of a bulk-solidifying amorphous alloy having an elastic strain limit of about 1.2% or more, a glass transition temperature lower than 400° C., and a coefficient of thermal expansion of about 10 −5 (m/m ° C.) or less, wherein the bulk-solidifying amorphous alloy has a hardness of about 7.5 GPa and higher.
26. The object of claim 25 , wherein the bulk-solidifying amorphous alloy is based on ferrous metals.