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Lab talk, the good, the bad, and the ugly
Metal
Maryland bridges in NP metal
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<blockquote data-quote="zena" data-source="post: 8045" data-attributes="member: 649"><p>Hi everyone just wanted some insight how you do things. I had a 6 unit maryland bridge which was casted in NP metal as requested by the Doctor. It was to replace tooth 41 and the Doctor wanted the wings to extend on the</p><p> 43 42 <strong><em><u>41</u> </em></strong>31 32 33. It was waxed in duralay and casted like normal crown/bridge stuff, once casted it looked great until I went to fit it. It warped completely on one side. So it was re-waxed and this time we decided since the wing span was so long, we were going to do a refractory model and wax it on it and cast it on the model just like you would a casting for a partial denture. It worked wonders the fit was perfect like a glove, no warping and it took no time to fit at all, Do you ever have long span maryland bridges warp if so what do you do to prevent it? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /></p></blockquote><p></p>
[QUOTE="zena, post: 8045, member: 649"] Hi everyone just wanted some insight how you do things. I had a 6 unit maryland bridge which was casted in NP metal as requested by the Doctor. It was to replace tooth 41 and the Doctor wanted the wings to extend on the 43 42 [B][I][U]41[/U] [/I][/B]31 32 33. It was waxed in duralay and casted like normal crown/bridge stuff, once casted it looked great until I went to fit it. It warped completely on one side. So it was re-waxed and this time we decided since the wing span was so long, we were going to do a refractory model and wax it on it and cast it on the model just like you would a casting for a partial denture. It worked wonders the fit was perfect like a glove, no warping and it took no time to fit at all, Do you ever have long span maryland bridges warp if so what do you do to prevent it? :rolleyes: [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Metal
Maryland bridges in NP metal
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