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Lab talk, the good, the bad, and the ugly
Metal
porcelain to gold problem
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<blockquote data-quote="a14vmk" data-source="post: 38825" data-attributes="member: 4222"><p>Hi guys just wanting your opinions on a problem ive been experiencing in my lab over the past few months, for all my implant cases i use a 51% au alloy, i recently fabricated a 3 unit bridge on 2 implants and was really happy with it so i decided to glaze it and the bridge came out of the furnace with visable hairline cracks from the lingual of each abutment towards and through the lingual of the pontic, so i decided to strip the ceramic off and relayer it but this time i introduced a 8 min cooling cycle but this did not solve my problem as it happened again! The alloy i use has a corresponding cte to my ceramic and other labs around town also use this alloy with the same ceramic and have absolutly no problems. The interesting thing is that it doesnt happen on any single units i make just bridges!</p></blockquote><p></p>
[QUOTE="a14vmk, post: 38825, member: 4222"] Hi guys just wanting your opinions on a problem ive been experiencing in my lab over the past few months, for all my implant cases i use a 51% au alloy, i recently fabricated a 3 unit bridge on 2 implants and was really happy with it so i decided to glaze it and the bridge came out of the furnace with visable hairline cracks from the lingual of each abutment towards and through the lingual of the pontic, so i decided to strip the ceramic off and relayer it but this time i introduced a 8 min cooling cycle but this did not solve my problem as it happened again! The alloy i use has a corresponding cte to my ceramic and other labs around town also use this alloy with the same ceramic and have absolutly no problems. The interesting thing is that it doesnt happen on any single units i make just bridges! [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Metal
porcelain to gold problem
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