Dental crown and bridge alloys are used for casting full contour crowns and bridges. These alloys are generally created from noble and high noble metals with gold colored crowns the most popular. Different alloys are designed with different levels of hardness with softer alloys better suited for smaller restorations such as inlays and onlays, while harder alloys are better suited for crowns and bridges. Casting with crown and bridge alloys requires specific techniques with different alloys melting at different temperatures, so be sure to follow the protocols that deliver the best results for your lab.
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| Company | Sterngold Dental, LLC | Sterngold Dental, LLC | Sterngold Dental, LLC | Sterngold Dental, LLC | Sterngold Dental, LLC |
| Item | Tiffany Crown and Bridge Alloy | Apollo Crown and Bridge Alloy | Sterngold 1 Crown and Bridge Alloy | Sterngold 10 Crown and Bridge Alloy | Sterngold 20 Crown and Bridge Alloy |
| Price | Inquire | Inquire | Inquire | Inquire | Inquire |
| Description | Noble. Type IV. An alloy with only 50% gold, yet easy to cast. Extremely low tarnish and corrosion rates. | Good tarnish resistance with only 46% gold content. A moderately priced gold content alloy. You will find it to be your workhorse for crown and bridge | High Noble, Type II Premium alloy with excellent gold color. Micro-fine grain. Harder than Sterngold S, it is better suited for MOD inlays. Casts into | High Noble, Type II (annealed), Type III-IV (hardened). A lower cost gold for MOD inlays. Finishes to a pleasing light gold color. Excellent choice | High Noble. Type III Excellent economy in a high noble, yellow gold.
While only 60% gold, it holds up well in the mouth. Very clean looking after |
| Composition | Gold: 50 5
Palladium:2.95 %
Silver: 26 %
Copper: 17 %
Zinc: 1 %
Indium: 3 % | Gold: 46 %
Palladium: 6 %
Silver: 39.5 %
Copper: 7.47 %
Zinc: 1 %
Iridium: Less Than 1 % | Gold: 77 %
Palladium: 0.95 %
Silver: 13.63 %
Copper: 7.87 %
Zinc: Less Than 1 %
Iridium: Less Than 1 % | Gold: 62 %
Palladium: 1 %
Silver: 26.5 %
Copper: 10 %
Zinc: Less Than 1 % | Gold: 59.5 %
Palladium: 4 %
Silver: 25 %
Copper: 11 %
Zinc: Less Than 1 % |
| Hardness | Hard: 255 HV
Soft: 180 HV | Hard: 230 HV
Soft: 135 HV | 105 HV | Hard: 219 HV
Soft: 112 HV | 140 HV |
| Tensile Strength | Hard: 745 N/mm2
Soft: 469 N/mm2 | Hard: 690 N/mm2
Soft: 448 N/mm2 | 407 N/mm2 | Hard: 517 N/mm2
Soft: 319 N/mm2 | 393 N/mm2 |
| Indications for Use | Crowns
Bridges | Crown
Bridge | MOD Inlays
Crowns
Bridges | MOD Inlays
Crowns And Bridges | Gold |
| Color | Light Gold | Not Available | Gold | Light Gold | Not Available |
| Melting Interval | 815° C - 870° C | 870° C - 940° C | 925° C - 960° C | 849° C - 910° C | 873° C - 927° C |
| Casting Temperature | 955° C | 1,040° C | 1,040° C | 994° C | 1,850° C |
| Expansion | Hard: 16 %
Soft: 28 % | Hard:13 %
Soft: 30 % | 36 % | Hard: 2 %
Soft: 16 % | 30 % |
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