Side-by-side comparison of Porcelain Alloys

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.


Company	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.	Ivoclar Vivadent Inc.
Item	W Porcelain Alloy	Evolution Lite Porcelain Alloy	Golden Ceramic Porcelain Alloy	Protocol Porcelain Alloy	W-3 Porcelain Alloy
Price	Inquire	Inquire	Inquire	Inquire	Inquire
Description	W is a clinically proven reduced gold ceramic alloy demonstrating outstanding properties.	Evolution Lite is a gold-containing alloy with optimum mechanical and physical properties for IPS InLine Metal-Ceramic and conventional feldspar	Gold Ceramic is a clinically proven high-gold ceramic alloy demonstrating outstanding properties.	Protocol is a palladium-based ceramic alloy demonstrating outstanding properties.	W-3 is a silver-free reduced gold ceramic alloy demonstrating outstanding properties.
Composition	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 %	Gold: 40.3 % Palladium: 39.3 % Indium: 9.3 % Silver: 9.2 % Gallium: 1.8 % Ruthenium: Less Than 1 %	Gold: 86.9 % Platinum : 8 % Palladium: 2.5 % Silver: Less Than 1 % Tin: Less Than 1 % Indium: Less Than 1 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 % Tantalum: Less Than 1 % Iron: Less Than 1 % Lithium: Less Than 1 %	Palladium: 75.2 % Silver: 6.5 % Gold: 6 % Indium: 6 % Gallium: 6 % Ruthenium: Less Than 1 % Lithium: Less Than 1 %	Gold: 48.7 % Palladium: 39.6 % Indium: 10.6 % Tin: Less Than 1 % Gallium: Less Than 1 % Ruthenium: Less Than 1 % Rhenium: Less Than 1 % Boron: Less Than 1 % Lithium: Less Than 1 %
Hardness	220 HV	280 HV	165 HV	235 HV	225 HV
Tensile Strength	1,330 N/mm²	130 N/mm²	64 N/mm²	103 N/mm²	128 N/mm²
Indications for Use	Inlays Onlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Root Canal Posts Short And Long Span Bridges Model Casts Implant Superstructures	Onlays Inlays Partial Crowns Single Crowns Telescope And Conus Crowns Short And Long Span Bridges	Onlays Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures	Onlays Inlays 3/4 Crowns Crowns Telescope And Conus Crowns PFM Crowns Posts Short And Long Span Bridges Implant Superstructures Partial Dentures
Color	White	White	Rich Yellow	White	White
Melting Interval	1,230° C - 1,280° C	1,100° C - 1,260° C	1,060° C - 1,140° C	1,270° C - 1,310° C	1,235° C - 1,300° C
Casting Temperature	1,330° C - 1,390° C	1,315° C - 1,375° C	1,190° C - 1,250° C	1,365° C - 1,425° C	1,350° C - 1,410° C
Expansion	21 %	11 %	12 %	34 %	17 %
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