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 | BioUniversal Porcelain Alloy | Brite Gold Porcelain Alloy | Lodestar Porcelain Alloy | W Porcelain Alloy | W-1 Porcelain Alloy |
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| Description | BioUniversal is a gold-reduced universal alloy for veneering applications involving special ceramic and composite materials. | Brite Gold is a high-gold ceramic alloy. It exhibits a warm golden-yellow color for a natural esthetic shade effect of the veneer and the required | Lodestar is a silver-free reduced gold ceramic alloy demonstrating outstanding properties. | W is a clinically proven reduced gold ceramic alloy demonstrating outstanding properties. | W-1 is a clinically proven palladium-based ceramic alloy demonstrating outstanding properties. |
| Composition | 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: 96.3 %
Platinum: 2.6%
Indium: Less Than 1 %
Tin: Less Than 1 %
Iron: Less Than 1 %
Manganese: Less Than 1 %
Iridium: Less Than 1 %
Boron: Less Than 1 %
Copper: Less Than 1 % | Gold: 51.5 %
Palladium: 38.5 %
Indium: 8.5 %
Gallium: 1.5 %
Ruthenium: Less Than 1 %
Rhenium: Less Than 1 % | Gold: 54 %
Palladium: 26.4 %
Silver: 15.5 %
Tin: 2.5 %
Indium: 1.5 %
Ruthenium: Less Than 1 %
Rhenium: Less Than 1 %
Lithium: Less Than 1 % | Palladium: 53.3 %
Silver: 37.7 %
Tin: 8.5 %
Indium: Less Than 1 %
Ruthenium: Less Than 1 %
Lithium: Less Than 1 % |
| Hardness | 225 HV | 100 HV | 240 HV | 220 HV | 240 HV |
| Tensile Strength | 103 N/mm2 | 78.7 N/mm2 | 98 N/mm2 | 1,330 N/mm2 | 114 N/mm2 |
| Indications for Use | Inlays
Onlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
PFM Crowns
Posts
Short And Long Span Bridges
Implant Superstructures | Inlays
Onlays
3/4 Crowns
Crowns
Short Span Bridges | Onlays
Inlays
3/4 Crowns
Crowns
Telescope And Conus Crowns
PFM Crowns
Posts
Short And Long Span Bridges
Implant Superstructures
Partial Dentures | Inlays
Onlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Root Canal Posts
Short And Long Span Bridges | Onlays
Partial Crowns
Single Crowns
Telescope And Conus Crowns
Posts
Short And Long Span Bridges
Implant Superstructures
Partial Dentures |
| Color | Yellow | Rich Yellow | White | White | White |
| Compatible Porcelains | Low Fusing Ceramics
Composite Veneering Materials | Not Available | Not Available | Not Available | Not Available |
| Melting Interval | 1,020° C - 1,100° C | 1,030° C - 1,070° C | 1,215° C - 1,290° C | 1,230° C - 1,280° C | 1,185° C - 1,270° C |
| Casting Temperature | 1,155° C - 1,215° C | 1,125° C - 1,185° C | 1,350° C - 1,410° C | 1,330° C - 1,390° C | 1,320° C - 1,380° C |
| Expansion | 6 % | 15 % | 20 % | 21 % | 11 % |
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