High-noble bonding alloy for full gold crown?

[dt84]

Hello everybody!
Could you share your opinion on these two subjects, please:

1. Is it all right to use bonding alloy Bio PontoStar® XL (from BEGO, Au 86 - Pt 11,5 - Zn 1,6 - Rh <1 - Fe <1 - In <1) for a full gold crown?

2. Is there a high possibility of galvanic reaction in the mouth between PFMs (non-precious alloys) and full gold crowns (high-noble alloys)?

Thank you

 

[sixonice]

Hello everybody!
Could you share your opinion on these two subjects, please:

1. Is it all right to use bonding alloy Bio PontoStar® XL (from BEGO, Au 86 - Pt 11,5 - Zn 1,6 - Rh <1 - Fe <1 - In <1) for a full gold crown?

2. Is there a high possibility of galvanic reaction in the mouth between PFMs (non-precious alloys) and full gold crowns (high-noble alloys)?

Thank you

that bego alloy defintely seems (to me anyway) that it is a ceramic alloy for porcelain. you CAN use that alloy for a full gold crown with no issues, but it is just going to cost you more in the end. with gold being over $1500 an ounce, that 86% gold will be pricey! you could use a full-cast alloy with 60% gold and get nice color, not to mention it will be much less expensive. if that 86% gold is all you have you could use it no problem.
you will not have to worry about any galvanic reactions either!

 

[dt84]

Thank you for your answer and for prompt response!

 

[stevenson]

Noble metals are gold, platinum and palladium.

There are some of each in a high noble metal crown
but the predominant metal is gold, so we call it a gold
crown for convenience but it is an alloy as pure gold
is to soft to make a crown out of.

 

[Labwa]

Thanks stevenson. Another great piece of information.