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Lab talk, the good, the bad, and the ugly
Dental-CAD
Dental Designer parameters
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<blockquote data-quote="DMC" data-source="post: 25629" data-attributes="member: 430"><p>75 micron spacer is quite a lot.</p><p></p><p>We use 40uM (20um + 20um) for most preps, and down to 0 for very convergent axial wall preps. (pyramid prep shape)</p><p></p><p>If you are casting non-precious metal, then maybe 75um is good? (pmma, rapid-prototype) No extra margin needed for metal of course. (safty margin, or margin offset, or whatever you call it)</p><p></p><p>If designing wax for pressing, I really have no idea? Maybe a eMax-head could chime in on thoughts about cement spacer and margin angle/offset.</p></blockquote><p></p>
[QUOTE="DMC, post: 25629, member: 430"] 75 micron spacer is quite a lot. We use 40uM (20um + 20um) for most preps, and down to 0 for very convergent axial wall preps. (pyramid prep shape) If you are casting non-precious metal, then maybe 75um is good? (pmma, rapid-prototype) No extra margin needed for metal of course. (safty margin, or margin offset, or whatever you call it) If designing wax for pressing, I really have no idea? Maybe a eMax-head could chime in on thoughts about cement spacer and margin angle/offset. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAD
Dental Designer parameters
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