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Dental Lab Network Faq & Registration Help
Galvano Copings
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<blockquote data-quote="Arian Deutsch" data-source="post: 322192" data-attributes="member: 16164"><p>Yes, type IV Au, hand waxed, hand milled in wax, cast, then re milled and polished, then we would use pattern resin and cast for the secondary frame, quite a bit of handwork...old school...the problem was that both components wore, and talk about cost...thats a lot of gold alloy. A friend of mine in Germany was still casting NP CrCo primary and secondaries up until about 8 years ago...very difficult with NP.</p><p></p><p>It's interesting how things have developed...late 80's early 90's the electroforming process just made so much sense...limit the wear to the secondary by using a titanium abutment, and that with a 99.9% gold, very biocompatible, and completely passive when you electroform directly to the abutment surface.</p><p></p><p>Digital Workflow has certainly made us more efficient for these types of cases, however there are some cases where I still need to hand wax or build up in resin, hand mill, then scan and copy mill for the best results</p></blockquote><p></p>
[QUOTE="Arian Deutsch, post: 322192, member: 16164"] Yes, type IV Au, hand waxed, hand milled in wax, cast, then re milled and polished, then we would use pattern resin and cast for the secondary frame, quite a bit of handwork...old school...the problem was that both components wore, and talk about cost...thats a lot of gold alloy. A friend of mine in Germany was still casting NP CrCo primary and secondaries up until about 8 years ago...very difficult with NP. It's interesting how things have developed...late 80's early 90's the electroforming process just made so much sense...limit the wear to the secondary by using a titanium abutment, and that with a 99.9% gold, very biocompatible, and completely passive when you electroform directly to the abutment surface. Digital Workflow has certainly made us more efficient for these types of cases, however there are some cases where I still need to hand wax or build up in resin, hand mill, then scan and copy mill for the best results [/QUOTE]
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