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Lab talk, the good, the bad, and the ugly
Metal
Casting long span bridge
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<blockquote data-quote="adamb4321" data-source="post: 108000" data-attributes="member: 838"><p>long span bridges are always going to be prone to flexing when the ceramic is fired, if you absolutely must have a full arch in one piece that actually fits properly I would look at making it in three or so sections and post ceramic soldering after a try in and preferably get the dentist to do a pick up imp using impression plaster in a custom tray that is very shallow. It's a bit long winded and, yes, furnace soldering can be a scary thought but it does work really well.</p><p></p><p>Or make it in zirconia, it doesn't seem to flex like metal</p></blockquote><p></p>
[QUOTE="adamb4321, post: 108000, member: 838"] long span bridges are always going to be prone to flexing when the ceramic is fired, if you absolutely must have a full arch in one piece that actually fits properly I would look at making it in three or so sections and post ceramic soldering after a try in and preferably get the dentist to do a pick up imp using impression plaster in a custom tray that is very shallow. It's a bit long winded and, yes, furnace soldering can be a scary thought but it does work really well. Or make it in zirconia, it doesn't seem to flex like metal [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Metal
Casting long span bridge
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