Porcelain alloys are used to fabricate copings and other substructures for crowns and bridges. These metals are cast to create a strong and properly fitting base to support an esthetic porcelain fused to metal (PFM) crown or bridge. A wide range of high noble, noble and base metal compositions can be used for fabricating PFM substructures, so there are numerous alloys that can be used. When considering a porcelain alloy it is important to consider how well the alloy bonds with your prefered ceramic system. Other key attributes of these materials are their specific working properties for casting, along with color and esthetic qualities.
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| Company | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. | Ivoclar Vivadent Inc. |
| Item | Capricorn Porcelain Alloy | 4all Porcelain Alloy | BioUniversal Porcelain Alloy | Sagittarius Porcelain Alloy | Spartan Porcelain Alloy |
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| Description | Capricorn is a palladium-based ceramic alloy demonstrating outstanding properties. | 4all is a nickel-chromium ceramic alloy. Its mechanical and physical properties have been coordinated with conventional feldspar ceramics. | BioUniversal is a gold-reduced universal alloy for veneering applications involving special ceramic and composite materials. | Sagittarius is a high-gold ceramic alloy demonstrating outstanding properties. | Clinically proven palladium-based ceramic alloy demonstrating outstanding properties |
| Composition | Palladium: 78.1 %
Indium: 6.5 %
Gallium: 6 %
Gold: 6 %
Silver: 3 %
Ruthenium: Less Than 1 %
Rhenium: Less Than 1 %
Lithium: Less Than 1 % | Nickle: 61.4 %
Chromium: 25.7 %
Molybdenum: 11 %
Silicon: 1.5 %
Manganese: Less Than 1 %
Aluminum: Less Than 1 %
Carbon: Less Than 1 % | Gold: 59.4 %
Silver: 25.5 %
Paladium: 9.5 %
Platinum: 2 %
Zinc: 2 %
Tin: Less Than 1 %
Iron: Less Than 1 %
Rhenium: Less Than 1 %
Ruthenium: Less Than 1 % | Gold: 75 %
Palladium: 16.8 %
Platinum: 2 %
Silver: 2 %
Indium: 2 %
Tin: 2 %
Copper: Less Than 1 %
Rhenium: Less Than 1 % | Palladium: 78.7 %
Copper: 10 %
Gallium: 9 %
Gold: 2 %
Iridium: Less Than 1 %
Boron: Les Than 1 % |
| Hardness | 260 HV | 235 HV | 225 HV | 245 HV | 360 HV |
| Tensile Strength | 97 N/mm2 | Not Available | 103 N/mm2 | 580 N/mm2 | 94 N/mm2 |
| Indications for Use | Onlays
Inlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
PFM Crowns
Posts
Short And Long Span Bridges
Implant Superstructures
Partial Dentures | Single Crowns
Telescope And Conus Crowns
Root Canal Posts
Short And Long Span Bridges | Inlays
Onlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
PFM Crowns
Posts
Short And Long Span Bridges
Implant Superstructures | Onlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
PFM Crowns
Posts
Short And Long Span Bridges
Implant superstructures
Partial Dentures | Onlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Posts
Short And Long Span Bridges
Implant Superstructures
Partial Dentures |
| Color | White | White | Yellow | White | White |
| Compatible Porcelains | Not Available | Not Available | Low Fusing Ceramics
Composite Veneering Materials | Not Available | Not Available |
| Melting Interval | 1,170° C - 1,335° C | 1,260° C - 1,350° C | 1,020° C - 1,100° C | 1,130° C - 1,255° C | 1,115° C - 1,160° C |
| Casting Temperature | 1,390° C - 1,450° C | 1,405° C - 1,465° C | 1,155° C - 1,215° C | 1,310° C - 1,370° C | 1,215° C - 1,275° C |
| Expansion | 33 % | 12 % | 6 % | 10 % | 19 % |
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